Don't allow socket close while writing h2 headers

Move link to tunnel/

.gitignore

@@ -1,3 +1,7 @@
+# Develop tools
+/.vscode/
+/.idea/
+
 # Binaries for programs and plugins
 *.exe
 *.exe~

.travis.yml

@@ -1,9 +1,11 @@
 language: go
 go:
-- 1.11.x
 - 1.12.x
 env:
   - GO111MODULE=on
 notifications:
   slack:
     secure: aEvhLbhujaGaKSrOokiG3//PaVHTIrc3fBpoRbCRqfZpyq6WREoapJJhF+tIpWWOwaC9GmChbD6aHo/jMUgwKXVyPSaNjiEL87YzUUpL8B2zslNp1rgfTg/LrzthOx3Q1TYwpaAl3to0fuHUVFX4yMeC2vuThq7WSXgMMxFCtbc=
+cache:
+  directories:
+    - $GOPATH/pkg/mod

README.zh-cn.md

@@ -32,5 +32,5 @@ Go Micro把分布式系统的各种细节抽象出来。下面是它的主要特
 
 ## 快速上手
 
-更多关于架构、安装的资料可以查看[文档](https://micro.mu/docs/go-micro_cn.html)。
+更多关于架构、安装的资料可以查看[文档](https://micro.mu/docs/cn/)。
 

broker/nats/nats.go

@@ -13,18 +13,19 @@ import (
 )
 
 type natsBroker struct {
+	sync.Once
 	sync.RWMutex
-	addrs []string
-	conn  *nats.Conn
-	opts  broker.Options
-	nopts nats.Options
-	drain bool
+	addrs   []string
+	conn    *nats.Conn
+	opts    broker.Options
+	nopts   nats.Options
+	drain   bool
+	closeCh chan (error)
 }
 
 type subscriber struct {
-	s     *nats.Subscription
-	opts  broker.SubscribeOptions
-	drain bool
+	s    *nats.Subscription
+	opts broker.SubscribeOptions
 }
 
 type publication struct {
@@ -54,9 +55,6 @@ func (s *subscriber) Topic() string {
 }
 
 func (s *subscriber) Unsubscribe() error {
-	if s.drain {
-		return s.s.Drain()
-	}
 	return s.s.Unsubscribe()
 }
 
@@ -122,20 +120,17 @@ func (n *natsBroker) Connect() error {
 
 func (n *natsBroker) Disconnect() error {
 	n.RLock()
+	defer n.RUnlock()
 	if n.drain {
 		n.conn.Drain()
-	} else {
-		n.conn.Close()
+		return <-n.closeCh
 	}
-	n.RUnlock()
+	n.conn.Close()
 	return nil
 }
 
 func (n *natsBroker) Init(opts ...broker.Option) error {
-	for _, o := range opts {
-		o(&n.opts)
-	}
-	n.addrs = setAddrs(n.opts.Addrs)
+	n.setOption(opts...)
 	return nil
 }
 
@@ -167,11 +162,6 @@ func (n *natsBroker) Subscribe(topic string, handler broker.Handler, opts ...bro
 		o(&opt)
 	}
 
-	var drain bool
-	if _, ok := opt.Context.Value(drainSubscriptionKey{}).(bool); ok {
-		drain = true
-	}
-
 	fn := func(msg *nats.Msg) {
 		var m broker.Message
 		if err := n.opts.Codec.Unmarshal(msg.Data, &m); err != nil {
@@ -193,7 +183,7 @@ func (n *natsBroker) Subscribe(topic string, handler broker.Handler, opts ...bro
 	if err != nil {
 		return nil, err
 	}
-	return &subscriber{s: sub, opts: opt, drain: drain}, nil
+	return &subscriber{s: sub, opts: opt}, nil
 }
 
 func (n *natsBroker) String() string {
@@ -207,39 +197,59 @@ func NewBroker(opts ...broker.Option) broker.Broker {
 		Context: context.Background(),
 	}
 
+	n := &natsBroker{
+		opts: options,
+	}
+	n.setOption(opts...)
+
+	return n
+}
+
+func (n *natsBroker) setOption(opts ...broker.Option) {
 	for _, o := range opts {
-		o(&options)
+		o(&n.opts)
 	}
 
-	natsOpts := nats.GetDefaultOptions()
-	if n, ok := options.Context.Value(optionsKey{}).(nats.Options); ok {
-		natsOpts = n
-	}
+	n.Once.Do(func() {
+		n.nopts = nats.GetDefaultOptions()
+	})
 
-	var drain bool
-	if _, ok := options.Context.Value(drainSubscriptionKey{}).(bool); ok {
-		drain = true
+	if nopts, ok := n.opts.Context.Value(optionsKey{}).(nats.Options); ok {
+		n.nopts = nopts
 	}
 
 	// broker.Options have higher priority than nats.Options
 	// only if Addrs, Secure or TLSConfig were not set through a broker.Option
 	// we read them from nats.Option
-	if len(options.Addrs) == 0 {
-		options.Addrs = natsOpts.Servers
+	if len(n.opts.Addrs) == 0 {
+		n.opts.Addrs = n.nopts.Servers
 	}
 
-	if !options.Secure {
-		options.Secure = natsOpts.Secure
+	if !n.opts.Secure {
+		n.opts.Secure = n.nopts.Secure
 	}
 
-	if options.TLSConfig == nil {
-		options.TLSConfig = natsOpts.TLSConfig
+	if n.opts.TLSConfig == nil {
+		n.opts.TLSConfig = n.nopts.TLSConfig
 	}
+	n.addrs = setAddrs(n.opts.Addrs)
 
-	return &natsBroker{
-		opts:  options,
-		nopts: natsOpts,
-		addrs: setAddrs(options.Addrs),
-		drain: drain,
+	if n.opts.Context.Value(drainConnectionKey{}) != nil {
+		n.drain = true
+		n.closeCh = make(chan error)
+		n.nopts.ClosedCB = n.onClose
+		n.nopts.AsyncErrorCB = n.onAsyncError
+	}
+}
+
+func (n *natsBroker) onClose(conn *nats.Conn) {
+	n.closeCh <- nil
+}
+
+func (n *natsBroker) onAsyncError(conn *nats.Conn, sub *nats.Subscription, err error) {
+	// There are kinds of different async error nats might callback, but we are interested
+	// in ErrDrainTimeout only here.
+	if err == nats.ErrDrainTimeout {
+		n.closeCh <- err
 	}
 }

broker/nats/options.go

@@ -7,7 +7,6 @@ import (
 
 type optionsKey struct{}
 type drainConnectionKey struct{}
-type drainSubscriptionKey struct{}
 
 // Options accepts nats.Options
 func Options(opts nats.Options) broker.Option {
@@ -16,10 +15,5 @@ func Options(opts nats.Options) broker.Option {
 
 // DrainConnection will drain subscription on close
 func DrainConnection() broker.Option {
-	return setBrokerOption(drainConnectionKey{}, true)
-}
-
-// DrainSubscription will drain pending messages when unsubscribe
-func DrainSubscription() broker.SubscribeOption {
-	return setSubscribeOption(drainSubscriptionKey{}, true)
+	return setBrokerOption(drainConnectionKey{}, struct{}{})
 }

client/grpc/codec.go

@@ -30,6 +30,7 @@ var (
 		"application/proto":        protoCodec{},
 		"application/protobuf":     protoCodec{},
 		"application/octet-stream": protoCodec{},
+		"application/grpc":         protoCodec{},
 		"application/grpc+json":    jsonCodec{},
 		"application/grpc+proto":   protoCodec{},
 		"application/grpc+bytes":   bytesCodec{},

client/grpc/grpc.go

@@ -18,7 +18,6 @@ import (
 	"github.com/micro/go-micro/registry"
 	"github.com/micro/go-micro/transport"
 
-	"github.com/micro/go-micro/util/buf"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/encoding"
@@ -73,10 +72,11 @@ func (g *grpcClient) next(request client.Request, opts client.CallOptions) (sele
 
 	// get next nodes from the selector
 	next, err := g.opts.Selector.Select(service, opts.SelectOptions...)
-	if err != nil && err == selector.ErrNotFound {
-		return nil, errors.NotFound("go.micro.client", err.Error())
-	} else if err != nil {
-		return nil, errors.InternalServerError("go.micro.client", err.Error())
+	if err != nil {
+		if err == selector.ErrNotFound {
+			return nil, errors.InternalServerError("go.micro.client", "service %s: %s", service, err.Error())
+		}
+		return nil, errors.InternalServerError("go.micro.client", "error selecting %s node: %s", service, err.Error())
 	}
 
 	return next, nil
@@ -350,15 +350,17 @@ func (g *grpcClient) Call(ctx context.Context, req client.Request, rsp interface
 
 		// select next node
 		node, err := next()
-		if err != nil && err == selector.ErrNotFound {
-			return errors.NotFound("go.micro.client", err.Error())
-		} else if err != nil {
-			return errors.InternalServerError("go.micro.client", err.Error())
+		service := req.Service()
+		if err != nil {
+			if err == selector.ErrNotFound {
+				return errors.InternalServerError("go.micro.client", "service %s: %s", service, err.Error())
+			}
+			return errors.InternalServerError("go.micro.client", "error selecting %s node: %s", service, err.Error())
 		}
 
 		// make the call
 		err = gcall(ctx, node, req, rsp, callOpts)
-		g.opts.Selector.Mark(req.Service(), node, err)
+		g.opts.Selector.Mark(service, node, err)
 		return err
 	}
 
@@ -429,14 +431,16 @@ func (g *grpcClient) Stream(ctx context.Context, req client.Request, opts ...cli
 		}
 
 		node, err := next()
-		if err != nil && err == selector.ErrNotFound {
-			return nil, errors.NotFound("go.micro.client", err.Error())
-		} else if err != nil {
-			return nil, errors.InternalServerError("go.micro.client", err.Error())
+		service := req.Service()
+		if err != nil {
+			if err == selector.ErrNotFound {
+				return nil, errors.InternalServerError("go.micro.client", "service %s: %s", service, err.Error())
+			}
+			return nil, errors.InternalServerError("go.micro.client", "error selecting %s node: %s", service, err.Error())
 		}
 
 		stream, err := g.stream(ctx, node, req, callOpts)
-		g.opts.Selector.Mark(req.Service(), node, err)
+		g.opts.Selector.Mark(service, node, err)
 		return stream, err
 	}
 
@@ -486,14 +490,13 @@ func (g *grpcClient) Publish(ctx context.Context, p client.Message, opts ...clie
 	}
 	md["Content-Type"] = p.ContentType()
 
-	cf, err := g.newCodec(p.ContentType())
+	cf, err := g.newGRPCCodec(p.ContentType())
 	if err != nil {
 		return errors.InternalServerError("go.micro.client", err.Error())
 	}
 
-	b := buf.New(nil)
-
-	if err := cf(b).Write(&codec.Message{Type: codec.Event}, p.Payload()); err != nil {
+	b, err := cf.Marshal(p.Payload())
+	if err != nil {
 		return errors.InternalServerError("go.micro.client", err.Error())
 	}
 
@@ -503,7 +506,7 @@ func (g *grpcClient) Publish(ctx context.Context, p client.Message, opts ...clie
 
 	return g.opts.Broker.Publish(p.Topic(), &broker.Message{
 		Header: md,
-		Body:   b.Bytes(),
+		Body:   b,
 	})
 }
 

client/proto/client.micro.go

@@ -31,37 +31,37 @@ var _ context.Context
 var _ client.Option
 var _ server.Option
 
-// Client API for Micro service
+// Client API for Client service
 
-type MicroService interface {
+type ClientService interface {
 	// Call allows a single request to be made
 	Call(ctx context.Context, in *Request, opts ...client.CallOption) (*Response, error)
 	// Stream is a bidirectional stream
-	Stream(ctx context.Context, opts ...client.CallOption) (Micro_StreamService, error)
+	Stream(ctx context.Context, opts ...client.CallOption) (Client_StreamService, error)
 	// Publish publishes a message and returns an empty Message
 	Publish(ctx context.Context, in *Message, opts ...client.CallOption) (*Message, error)
 }
 
-type microService struct {
+type clientService struct {
 	c    client.Client
 	name string
 }
 
-func NewMicroService(name string, c client.Client) MicroService {
+func NewClientService(name string, c client.Client) ClientService {
 	if c == nil {
 		c = client.NewClient()
 	}
 	if len(name) == 0 {
 		name = "go.micro.client"
 	}
-	return &microService{
+	return &clientService{
 		c:    c,
 		name: name,
 	}
 }
 
-func (c *microService) Call(ctx context.Context, in *Request, opts ...client.CallOption) (*Response, error) {
-	req := c.c.NewRequest(c.name, "Micro.Call", in)
+func (c *clientService) Call(ctx context.Context, in *Request, opts ...client.CallOption) (*Response, error) {
+	req := c.c.NewRequest(c.name, "Client.Call", in)
 	out := new(Response)
 	err := c.c.Call(ctx, req, out, opts...)
 	if err != nil {
@@ -70,16 +70,16 @@ func (c *microService) Call(ctx context.Context, in *Request, opts ...client.Cal
 	return out, nil
 }
 
-func (c *microService) Stream(ctx context.Context, opts ...client.CallOption) (Micro_StreamService, error) {
-	req := c.c.NewRequest(c.name, "Micro.Stream", &Request{})
+func (c *clientService) Stream(ctx context.Context, opts ...client.CallOption) (Client_StreamService, error) {
+	req := c.c.NewRequest(c.name, "Client.Stream", &Request{})
 	stream, err := c.c.Stream(ctx, req, opts...)
 	if err != nil {
 		return nil, err
 	}
-	return &microServiceStream{stream}, nil
+	return &clientServiceStream{stream}, nil
 }
 
-type Micro_StreamService interface {
+type Client_StreamService interface {
 	SendMsg(interface{}) error
 	RecvMsg(interface{}) error
 	Close() error
@@ -87,27 +87,27 @@ type Micro_StreamService interface {
 	Recv() (*Response, error)
 }
 
-type microServiceStream struct {
+type clientServiceStream struct {
 	stream client.Stream
 }
 
-func (x *microServiceStream) Close() error {
+func (x *clientServiceStream) Close() error {
 	return x.stream.Close()
 }
 
-func (x *microServiceStream) SendMsg(m interface{}) error {
+func (x *clientServiceStream) SendMsg(m interface{}) error {
 	return x.stream.Send(m)
 }
 
-func (x *microServiceStream) RecvMsg(m interface{}) error {
+func (x *clientServiceStream) RecvMsg(m interface{}) error {
 	return x.stream.Recv(m)
 }
 
-func (x *microServiceStream) Send(m *Request) error {
+func (x *clientServiceStream) Send(m *Request) error {
 	return x.stream.Send(m)
 }
 
-func (x *microServiceStream) Recv() (*Response, error) {
+func (x *clientServiceStream) Recv() (*Response, error) {
 	m := new(Response)
 	err := x.stream.Recv(m)
 	if err != nil {
@@ -116,8 +116,8 @@ func (x *microServiceStream) Recv() (*Response, error) {
 	return m, nil
 }
 
-func (c *microService) Publish(ctx context.Context, in *Message, opts ...client.CallOption) (*Message, error) {
-	req := c.c.NewRequest(c.name, "Micro.Publish", in)
+func (c *clientService) Publish(ctx context.Context, in *Message, opts ...client.CallOption) (*Message, error) {
+	req := c.c.NewRequest(c.name, "Client.Publish", in)
 	out := new(Message)
 	err := c.c.Call(ctx, req, out, opts...)
 	if err != nil {
@@ -126,43 +126,43 @@ func (c *microService) Publish(ctx context.Context, in *Message, opts ...client.
 	return out, nil
 }
 
-// Server API for Micro service
+// Server API for Client service
 
-type MicroHandler interface {
+type ClientHandler interface {
 	// Call allows a single request to be made
 	Call(context.Context, *Request, *Response) error
 	// Stream is a bidirectional stream
-	Stream(context.Context, Micro_StreamStream) error
+	Stream(context.Context, Client_StreamStream) error
 	// Publish publishes a message and returns an empty Message
 	Publish(context.Context, *Message, *Message) error
 }
 
-func RegisterMicroHandler(s server.Server, hdlr MicroHandler, opts ...server.HandlerOption) error {
-	type micro interface {
+func RegisterClientHandler(s server.Server, hdlr ClientHandler, opts ...server.HandlerOption) error {
+	type client interface {
 		Call(ctx context.Context, in *Request, out *Response) error
 		Stream(ctx context.Context, stream server.Stream) error
 		Publish(ctx context.Context, in *Message, out *Message) error
 	}
-	type Micro struct {
-		micro
+	type Client struct {
+		client
 	}
-	h := &microHandler{hdlr}
-	return s.Handle(s.NewHandler(&Micro{h}, opts...))
+	h := &clientHandler{hdlr}
+	return s.Handle(s.NewHandler(&Client{h}, opts...))
 }
 
-type microHandler struct {
-	MicroHandler
+type clientHandler struct {
+	ClientHandler
 }
 
-func (h *microHandler) Call(ctx context.Context, in *Request, out *Response) error {
-	return h.MicroHandler.Call(ctx, in, out)
+func (h *clientHandler) Call(ctx context.Context, in *Request, out *Response) error {
+	return h.ClientHandler.Call(ctx, in, out)
 }
 
-func (h *microHandler) Stream(ctx context.Context, stream server.Stream) error {
-	return h.MicroHandler.Stream(ctx, &microStreamStream{stream})
+func (h *clientHandler) Stream(ctx context.Context, stream server.Stream) error {
+	return h.ClientHandler.Stream(ctx, &clientStreamStream{stream})
 }
 
-type Micro_StreamStream interface {
+type Client_StreamStream interface {
 	SendMsg(interface{}) error
 	RecvMsg(interface{}) error
 	Close() error
@@ -170,27 +170,27 @@ type Micro_StreamStream interface {
 	Recv() (*Request, error)
 }
 
-type microStreamStream struct {
+type clientStreamStream struct {
 	stream server.Stream
 }
 
-func (x *microStreamStream) Close() error {
+func (x *clientStreamStream) Close() error {
 	return x.stream.Close()
 }
 
-func (x *microStreamStream) SendMsg(m interface{}) error {
+func (x *clientStreamStream) SendMsg(m interface{}) error {
 	return x.stream.Send(m)
 }
 
-func (x *microStreamStream) RecvMsg(m interface{}) error {
+func (x *clientStreamStream) RecvMsg(m interface{}) error {
 	return x.stream.Recv(m)
 }
 
-func (x *microStreamStream) Send(m *Response) error {
+func (x *clientStreamStream) Send(m *Response) error {
 	return x.stream.Send(m)
 }
 
-func (x *microStreamStream) Recv() (*Request, error) {
+func (x *clientStreamStream) Recv() (*Request, error) {
 	m := new(Request)
 	if err := x.stream.Recv(m); err != nil {
 		return nil, err
@@ -198,6 +198,6 @@ func (x *microStreamStream) Recv() (*Request, error) {
 	return m, nil
 }
 
-func (h *microHandler) Publish(ctx context.Context, in *Message, out *Message) error {
-	return h.MicroHandler.Publish(ctx, in, out)
+func (h *clientHandler) Publish(ctx context.Context, in *Message, out *Message) error {
+	return h.ClientHandler.Publish(ctx, in, out)
 }

client/proto/client.pb.go

@@ -191,23 +191,23 @@ func init() {
 
 var fileDescriptor_7d733ae29171347b = []byte{
 	// 270 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x91, 0x3f, 0x4f, 0xc3, 0x30,
-	0x10, 0xc5, 0xeb, 0xfe, 0x4b, 0x39, 0x2a, 0x21, 0x9d, 0x18, 0x4c, 0x06, 0x54, 0x32, 0x65, 0xc1,
-	0x45, 0x30, 0x23, 0x86, 0xce, 0x95, 0x50, 0x40, 0xac, 0x28, 0x71, 0x4f, 0xc1, 0x52, 0x6a, 0x9b,
-	0xd8, 0xad, 0x94, 0xef, 0xc8, 0x87, 0x42, 0x38, 0x29, 0x45, 0xd0, 0x2e, 0x6c, 0xf7, 0xee, 0x67,
-	0xbd, 0x3b, 0xbf, 0x83, 0x74, 0xad, 0x64, 0x6d, 0xe6, 0xa5, 0xb9, 0x6e, 0x0b, 0x59, 0x29, 0xd2,
-	0x7e, 0x6e, 0x6b, 0xe3, 0x77, 0x42, 0x04, 0x81, 0x67, 0xa5, 0x11, 0xe1, 0x8d, 0x68, 0xdb, 0xc9,
-	0x16, 0xa2, 0x8c, 0xde, 0x37, 0xe4, 0x3c, 0x72, 0x88, 0x1c, 0xd5, 0x5b, 0x25, 0x89, 0xb3, 0x19,
-	0x4b, 0x4f, 0xb2, 0x9d, 0xc4, 0x18, 0x26, 0xa4, 0x57, 0xd6, 0x28, 0xed, 0x79, 0x3f, 0xa0, 0x6f,
-	0x8d, 0x57, 0x30, 0x95, 0x46, 0x7b, 0xd2, 0xfe, 0xd5, 0x37, 0x96, 0xf8, 0x20, 0xf0, 0xd3, 0xae,
-	0xf7, 0xdc, 0x58, 0x42, 0x84, 0x61, 0x61, 0x56, 0x0d, 0x1f, 0xce, 0x58, 0x3a, 0xcd, 0x42, 0x9d,
-	0x5c, 0xc2, 0x24, 0x23, 0x67, 0x8d, 0x76, 0x7b, 0xce, 0x7e, 0xf0, 0x17, 0x88, 0x96, 0xe4, 0x5c,
-	0x5e, 0x12, 0x9e, 0xc3, 0xc8, 0x1b, 0xab, 0x64, 0xb7, 0x55, 0x2b, 0xfe, 0xcc, 0xed, 0x1f, 0x9f,
-	0x3b, 0xd8, 0xfb, 0xde, 0x7e, 0x30, 0x18, 0x2d, 0xbf, 0x02, 0xc0, 0x7b, 0x18, 0x2e, 0xf2, 0xaa,
-	0x42, 0x2e, 0x7e, 0x65, 0x22, 0xba, 0x40, 0xe2, 0x8b, 0x03, 0xa4, 0x5d, 0x39, 0xe9, 0xe1, 0x02,
-	0xc6, 0x4f, 0xbe, 0xa6, 0x7c, 0xfd, 0x4f, 0x83, 0x94, 0xdd, 0x30, 0x7c, 0x80, 0xe8, 0x71, 0x53,
-	0x54, 0xca, 0xbd, 0x1d, 0x70, 0xe9, 0xfe, 0x1f, 0x1f, 0x25, 0x49, 0xaf, 0x18, 0x87, 0xb3, 0xde,
-	0x7d, 0x06, 0x00, 0x00, 0xff, 0xff, 0xd3, 0x63, 0x94, 0x1a, 0x02, 0x02, 0x00, 0x00,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x91, 0x41, 0x4b, 0xc3, 0x40,
+	0x10, 0x85, 0xbb, 0x6d, 0x4c, 0xea, 0x58, 0x10, 0x06, 0x0f, 0x6b, 0x0e, 0x52, 0x73, 0xca, 0xc5,
+	0x54, 0xf4, 0x2c, 0x1e, 0x72, 0x16, 0x24, 0x8a, 0x57, 0x49, 0xb6, 0x43, 0x5c, 0x48, 0x77, 0xd7,
+	0xec, 0xb6, 0x90, 0x1f, 0xe9, 0x7f, 0x12, 0x36, 0xa9, 0x15, 0x6d, 0x2f, 0xbd, 0xcd, 0x9b, 0x6f,
+	0x79, 0x33, 0xfb, 0x06, 0xd2, 0x95, 0x14, 0xad, 0x5e, 0xd4, 0xfa, 0xa6, 0x2f, 0x44, 0x23, 0x49,
+	0xb9, 0x85, 0x69, 0xb5, 0xdb, 0x8a, 0xcc, 0x0b, 0x3c, 0xaf, 0x75, 0xe6, 0xdf, 0x64, 0x7d, 0x3b,
+	0xd9, 0x40, 0x54, 0xd0, 0xe7, 0x9a, 0xac, 0x43, 0x0e, 0x91, 0xa5, 0x76, 0x23, 0x05, 0x71, 0x36,
+	0x67, 0xe9, 0x69, 0xb1, 0x95, 0x18, 0xc3, 0x94, 0xd4, 0xd2, 0x68, 0xa9, 0x1c, 0x1f, 0x7b, 0xf4,
+	0xa3, 0xf1, 0x1a, 0x66, 0x42, 0x2b, 0x47, 0xca, 0xbd, 0xbb, 0xce, 0x10, 0x9f, 0x78, 0x7e, 0x36,
+	0xf4, 0x5e, 0x3b, 0x43, 0x88, 0x10, 0x54, 0x7a, 0xd9, 0xf1, 0x60, 0xce, 0xd2, 0x59, 0xe1, 0xeb,
+	0xe4, 0x0a, 0xa6, 0x05, 0x59, 0xa3, 0x95, 0xdd, 0x71, 0xf6, 0x8b, 0xbf, 0x41, 0xf4, 0x44, 0xd6,
+	0x96, 0x35, 0xe1, 0x05, 0x9c, 0x38, 0x6d, 0xa4, 0x18, 0xb6, 0xea, 0xc5, 0xbf, 0xb9, 0xe3, 0xc3,
+	0x73, 0x27, 0x3b, 0xdf, 0xbb, 0x2f, 0x06, 0x61, 0xee, 0xbf, 0x8e, 0x0f, 0x10, 0xe4, 0x65, 0xd3,
+	0x20, 0xcf, 0xfe, 0x84, 0x92, 0x0d, 0x89, 0xc4, 0x97, 0x7b, 0x48, 0xbf, 0x73, 0x32, 0xc2, 0x1c,
+	0xc2, 0x17, 0xd7, 0x52, 0xb9, 0x3a, 0xd2, 0x20, 0x65, 0xb7, 0x0c, 0x1f, 0x21, 0x7a, 0x5e, 0x57,
+	0x8d, 0xb4, 0x1f, 0x7b, 0x5c, 0x86, 0x00, 0xe2, 0x83, 0x24, 0x19, 0x55, 0xa1, 0xbf, 0xeb, 0xfd,
+	0x77, 0x00, 0x00, 0x00, 0xff, 0xff, 0x0a, 0x76, 0x1f, 0x51, 0x03, 0x02, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -218,59 +218,59 @@ var _ grpc.ClientConn
 // is compatible with the grpc package it is being compiled against.
 const _ = grpc.SupportPackageIsVersion4
 
-// MicroClient is the client API for Micro service.
+// ClientClient is the client API for Client service.
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
-type MicroClient interface {
+type ClientClient interface {
 	// Call allows a single request to be made
 	Call(ctx context.Context, in *Request, opts ...grpc.CallOption) (*Response, error)
 	// Stream is a bidirectional stream
-	Stream(ctx context.Context, opts ...grpc.CallOption) (Micro_StreamClient, error)
+	Stream(ctx context.Context, opts ...grpc.CallOption) (Client_StreamClient, error)
 	// Publish publishes a message and returns an empty Message
 	Publish(ctx context.Context, in *Message, opts ...grpc.CallOption) (*Message, error)
 }
 
-type microClient struct {
+type clientClient struct {
 	cc *grpc.ClientConn
 }
 
-func NewMicroClient(cc *grpc.ClientConn) MicroClient {
-	return &microClient{cc}
+func NewClientClient(cc *grpc.ClientConn) ClientClient {
+	return &clientClient{cc}
 }
 
-func (c *microClient) Call(ctx context.Context, in *Request, opts ...grpc.CallOption) (*Response, error) {
+func (c *clientClient) Call(ctx context.Context, in *Request, opts ...grpc.CallOption) (*Response, error) {
 	out := new(Response)
-	err := c.cc.Invoke(ctx, "/go.micro.client.Micro/Call", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/go.micro.client.Client/Call", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-func (c *microClient) Stream(ctx context.Context, opts ...grpc.CallOption) (Micro_StreamClient, error) {
-	stream, err := c.cc.NewStream(ctx, &_Micro_serviceDesc.Streams[0], "/go.micro.client.Micro/Stream", opts...)
+func (c *clientClient) Stream(ctx context.Context, opts ...grpc.CallOption) (Client_StreamClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_Client_serviceDesc.Streams[0], "/go.micro.client.Client/Stream", opts...)
 	if err != nil {
 		return nil, err
 	}
-	x := &microStreamClient{stream}
+	x := &clientStreamClient{stream}
 	return x, nil
 }
 
-type Micro_StreamClient interface {
+type Client_StreamClient interface {
 	Send(*Request) error
 	Recv() (*Response, error)
 	grpc.ClientStream
 }
 
-type microStreamClient struct {
+type clientStreamClient struct {
 	grpc.ClientStream
 }
 
-func (x *microStreamClient) Send(m *Request) error {
+func (x *clientStreamClient) Send(m *Request) error {
 	return x.ClientStream.SendMsg(m)
 }
 
-func (x *microStreamClient) Recv() (*Response, error) {
+func (x *clientStreamClient) Recv() (*Response, error) {
 	m := new(Response)
 	if err := x.ClientStream.RecvMsg(m); err != nil {
 		return nil, err
@@ -278,66 +278,66 @@ func (x *microStreamClient) Recv() (*Response, error) {
 	return m, nil
 }
 
-func (c *microClient) Publish(ctx context.Context, in *Message, opts ...grpc.CallOption) (*Message, error) {
+func (c *clientClient) Publish(ctx context.Context, in *Message, opts ...grpc.CallOption) (*Message, error) {
 	out := new(Message)
-	err := c.cc.Invoke(ctx, "/go.micro.client.Micro/Publish", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/go.micro.client.Client/Publish", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-// MicroServer is the server API for Micro service.
-type MicroServer interface {
+// ClientServer is the server API for Client service.
+type ClientServer interface {
 	// Call allows a single request to be made
 	Call(context.Context, *Request) (*Response, error)
 	// Stream is a bidirectional stream
-	Stream(Micro_StreamServer) error
+	Stream(Client_StreamServer) error
 	// Publish publishes a message and returns an empty Message
 	Publish(context.Context, *Message) (*Message, error)
 }
 
-func RegisterMicroServer(s *grpc.Server, srv MicroServer) {
-	s.RegisterService(&_Micro_serviceDesc, srv)
+func RegisterClientServer(s *grpc.Server, srv ClientServer) {
+	s.RegisterService(&_Client_serviceDesc, srv)
 }
 
-func _Micro_Call_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+func _Client_Call_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(Request)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
 	if interceptor == nil {
-		return srv.(MicroServer).Call(ctx, in)
+		return srv.(ClientServer).Call(ctx, in)
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/go.micro.client.Micro/Call",
+		FullMethod: "/go.micro.client.Client/Call",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(MicroServer).Call(ctx, req.(*Request))
+		return srv.(ClientServer).Call(ctx, req.(*Request))
 	}
 	return interceptor(ctx, in, info, handler)
 }
 
-func _Micro_Stream_Handler(srv interface{}, stream grpc.ServerStream) error {
-	return srv.(MicroServer).Stream(&microStreamServer{stream})
+func _Client_Stream_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(ClientServer).Stream(&clientStreamServer{stream})
 }
 
-type Micro_StreamServer interface {
+type Client_StreamServer interface {
 	Send(*Response) error
 	Recv() (*Request, error)
 	grpc.ServerStream
 }
 
-type microStreamServer struct {
+type clientStreamServer struct {
 	grpc.ServerStream
 }
 
-func (x *microStreamServer) Send(m *Response) error {
+func (x *clientStreamServer) Send(m *Response) error {
 	return x.ServerStream.SendMsg(m)
 }
 
-func (x *microStreamServer) Recv() (*Request, error) {
+func (x *clientStreamServer) Recv() (*Request, error) {
 	m := new(Request)
 	if err := x.ServerStream.RecvMsg(m); err != nil {
 		return nil, err
@@ -345,41 +345,41 @@ func (x *microStreamServer) Recv() (*Request, error) {
 	return m, nil
 }
 
-func _Micro_Publish_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+func _Client_Publish_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(Message)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
 	if interceptor == nil {
-		return srv.(MicroServer).Publish(ctx, in)
+		return srv.(ClientServer).Publish(ctx, in)
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/go.micro.client.Micro/Publish",
+		FullMethod: "/go.micro.client.Client/Publish",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(MicroServer).Publish(ctx, req.(*Message))
+		return srv.(ClientServer).Publish(ctx, req.(*Message))
 	}
 	return interceptor(ctx, in, info, handler)
 }
 
-var _Micro_serviceDesc = grpc.ServiceDesc{
-	ServiceName: "go.micro.client.Micro",
-	HandlerType: (*MicroServer)(nil),
+var _Client_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "go.micro.client.Client",
+	HandlerType: (*ClientServer)(nil),
 	Methods: []grpc.MethodDesc{
 		{
 			MethodName: "Call",
-			Handler:    _Micro_Call_Handler,
+			Handler:    _Client_Call_Handler,
 		},
 		{
 			MethodName: "Publish",
-			Handler:    _Micro_Publish_Handler,
+			Handler:    _Client_Publish_Handler,
 		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
 			StreamName:    "Stream",
-			Handler:       _Micro_Stream_Handler,
+			Handler:       _Client_Stream_Handler,
 			ServerStreams: true,
 			ClientStreams: true,
 		},

client/proto/client.proto

@@ -2,8 +2,8 @@ syntax = "proto3";
 
 package go.micro.client;
 
-// Micro is the micro client interface
-service Micro {
+// Client is the micro client interface
+service Client {
 	// Call allows a single request to be made
 	rpc Call(Request) returns (Response) {};
 	// Stream is a bidirectional stream

client/rpc_client.go

@@ -96,19 +96,22 @@ func (r *rpcClient) call(ctx context.Context, node *registry.Node, req Request,
 		}
 	}
 
-	var grr error
-	c, err := r.pool.Get(address, transport.WithTimeout(opts.DialTimeout))
+	dOpts := []transport.DialOption{
+		transport.WithStream(),
+	}
+
+	if opts.DialTimeout >= 0 {
+		dOpts = append(dOpts, transport.WithTimeout(opts.DialTimeout))
+	}
+
+	c, err := r.pool.Get(address, dOpts...)
 	if err != nil {
 		return errors.InternalServerError("go.micro.client", "connection error: %v", err)
 	}
-	defer func() {
-		// defer execution of release
-		r.pool.Release(c, grr)
-	}()
 
 	seq := atomic.LoadUint64(&r.seq)
 	atomic.AddUint64(&r.seq, 1)
-	codec := newRpcCodec(msg, c, cf)
+	codec := newRpcCodec(msg, c, cf, "")
 
 	rsp := &rpcResponse{
 		socket: c,
@@ -116,15 +119,19 @@ func (r *rpcClient) call(ctx context.Context, node *registry.Node, req Request,
 	}
 
 	stream := &rpcStream{
+		id:       fmt.Sprintf("%v", seq),
 		context:  ctx,
 		request:  req,
 		response: rsp,
 		codec:    codec,
 		closed:   make(chan bool),
-		id:       fmt.Sprintf("%v", seq),
+		release:  func(err error) { r.pool.Release(c, err) },
+		sendEOS:  false,
 	}
+	// close the stream on exiting this function
 	defer stream.Close()
 
+	// wait for error response
 	ch := make(chan error, 1)
 
 	go func() {
@@ -150,14 +157,26 @@ func (r *rpcClient) call(ctx context.Context, node *registry.Node, req Request,
 		ch <- nil
 	}()
 
+	var grr error
+
 	select {
 	case err := <-ch:
 		grr = err
 		return err
 	case <-ctx.Done():
-		grr = ctx.Err()
-		return errors.Timeout("go.micro.client", fmt.Sprintf("%v", ctx.Err()))
+		grr = errors.Timeout("go.micro.client", fmt.Sprintf("%v", ctx.Err()))
 	}
+
+	// set the stream error
+	if grr != nil {
+		stream.Lock()
+		stream.err = grr
+		stream.Unlock()
+
+		return grr
+	}
+
+	return nil
 }
 
 func (r *rpcClient) stream(ctx context.Context, node *registry.Node, req Request, opts CallOptions) (Stream, error) {
@@ -201,12 +220,18 @@ func (r *rpcClient) stream(ctx context.Context, node *registry.Node, req Request
 		dOpts = append(dOpts, transport.WithTimeout(opts.DialTimeout))
 	}
 
-	c, err := r.opts.Transport.Dial(address, dOpts...)
+	c, err := r.pool.Get(address, dOpts...)
 	if err != nil {
 		return nil, errors.InternalServerError("go.micro.client", "connection error: %v", err)
 	}
 
-	codec := newRpcCodec(msg, c, cf)
+	// increment the sequence number
+	seq := atomic.LoadUint64(&r.seq)
+	atomic.AddUint64(&r.seq, 1)
+	id := fmt.Sprintf("%v", seq)
+
+	// create codec with stream id
+	codec := newRpcCodec(msg, c, cf, id)
 
 	rsp := &rpcResponse{
 		socket: c,
@@ -219,16 +244,24 @@ func (r *rpcClient) stream(ctx context.Context, node *registry.Node, req Request
 	}
 
 	stream := &rpcStream{
+		id:       id,
 		context:  ctx,
 		request:  req,
 		response: rsp,
-		closed:   make(chan bool),
 		codec:    codec,
+		// used to close the stream
+		closed: make(chan bool),
+		// signal the end of stream,
+		sendEOS: true,
+		// release func
+		release: func(err error) { r.pool.Release(c, err) },
 	}
 
+	// wait for error response
 	ch := make(chan error, 1)
 
 	go func() {
+		// send the first message
 		ch <- stream.Send(req.Body())
 	}()
 
@@ -242,6 +275,12 @@ func (r *rpcClient) stream(ctx context.Context, node *registry.Node, req Request
 	}
 
 	if grr != nil {
+		// set the error
+		stream.Lock()
+		stream.err = grr
+		stream.Unlock()
+
+		// close the stream
 		stream.Close()
 		return nil, grr
 	}
@@ -312,10 +351,11 @@ func (r *rpcClient) next(request Request, opts CallOptions) (selector.Next, erro
 
 	// get next nodes from the selector
 	next, err := r.opts.Selector.Select(service, opts.SelectOptions...)
-	if err != nil && err == selector.ErrNotFound {
-		return nil, errors.NotFound("go.micro.client", "service %s: %v", service, err.Error())
-	} else if err != nil {
-		return nil, errors.InternalServerError("go.micro.client", "error selecting %s node: %v", service, err.Error())
+	if err != nil {
+		if err == selector.ErrNotFound {
+			return nil, errors.InternalServerError("go.micro.client", "service %s: %s", service, err.Error())
+		}
+		return nil, errors.InternalServerError("go.micro.client", "error selecting %s node: %s", service, err.Error())
 	}
 
 	return next, nil
@@ -375,15 +415,17 @@ func (r *rpcClient) Call(ctx context.Context, request Request, response interfac
 
 		// select next node
 		node, err := next()
-		if err != nil && err == selector.ErrNotFound {
-			return errors.NotFound("go.micro.client", "service %s: %v", request.Service(), err.Error())
-		} else if err != nil {
-			return errors.InternalServerError("go.micro.client", "error getting next %s node: %v", request.Service(), err.Error())
+		service := request.Service()
+		if err != nil {
+			if err == selector.ErrNotFound {
+				return errors.InternalServerError("go.micro.client", "service %s: %s", service, err.Error())
+			}
+			return errors.InternalServerError("go.micro.client", "error getting next %s node: %s", service, err.Error())
 		}
 
 		// make the call
 		err = rcall(ctx, node, request, response, callOpts)
-		r.opts.Selector.Mark(request.Service(), node, err)
+		r.opts.Selector.Mark(service, node, err)
 		return err
 	}
 
@@ -452,14 +494,16 @@ func (r *rpcClient) Stream(ctx context.Context, request Request, opts ...CallOpt
 		}
 
 		node, err := next()
-		if err != nil && err == selector.ErrNotFound {
-			return nil, errors.NotFound("go.micro.client", "service %s: %v", request.Service(), err.Error())
-		} else if err != nil {
-			return nil, errors.InternalServerError("go.micro.client", "error getting next %s node: %v", request.Service(), err.Error())
+		service := request.Service()
+		if err != nil {
+			if err == selector.ErrNotFound {
+				return nil, errors.InternalServerError("go.micro.client", "service %s: %s", service, err.Error())
+			}
+			return nil, errors.InternalServerError("go.micro.client", "error getting next %s node: %s", service, err.Error())
 		}
 
 		stream, err := r.stream(ctx, node, request, callOpts)
-		r.opts.Selector.Mark(request.Service(), node, err)
+		r.opts.Selector.Mark(service, node, err)
 		return stream, err
 	}
 

client/rpc_codec.go

@@ -39,6 +39,9 @@ type rpcCodec struct {
 
 	req *transport.Message
 	buf *readWriteCloser
+
+	// signify if its a stream
+	stream string
 }
 
 type readWriteCloser struct {
@@ -113,7 +116,7 @@ func getHeaders(m *codec.Message) {
 	}
 }
 
-func setHeaders(m *codec.Message) {
+func setHeaders(m *codec.Message, stream string) {
 	set := func(hdr, v string) {
 		if len(v) == 0 {
 			return
@@ -126,6 +129,11 @@ func setHeaders(m *codec.Message) {
 	set("Micro-Service", m.Target)
 	set("Micro-Method", m.Method)
 	set("Micro-Endpoint", m.Endpoint)
+	set("Micro-Error", m.Error)
+
+	if len(stream) > 0 {
+		set("Micro-Stream", stream)
+	}
 }
 
 // setupProtocol sets up the old protocol
@@ -149,7 +157,7 @@ func setupProtocol(msg *transport.Message, node *registry.Node) codec.NewCodec {
 	return defaultCodecs[msg.Header["Content-Type"]]
 }
 
-func newRpcCodec(req *transport.Message, client transport.Client, c codec.NewCodec) codec.Codec {
+func newRpcCodec(req *transport.Message, client transport.Client, c codec.NewCodec, stream string) codec.Codec {
 	rwc := &readWriteCloser{
 		wbuf: bytes.NewBuffer(nil),
 		rbuf: bytes.NewBuffer(nil),
@@ -159,6 +167,7 @@ func newRpcCodec(req *transport.Message, client transport.Client, c codec.NewCod
 		client: client,
 		codec:  c(rwc),
 		req:    req,
+		stream: stream,
 	}
 	return r
 }
@@ -177,7 +186,7 @@ func (c *rpcCodec) Write(m *codec.Message, body interface{}) error {
 	}
 
 	// set the mucp headers
-	setHeaders(m)
+	setHeaders(m, c.stream)
 
 	// if body is bytes Frame don't encode
 	if body != nil {
@@ -240,6 +249,12 @@ func (c *rpcCodec) ReadHeader(m *codec.Message, r codec.MessageType) error {
 
 func (c *rpcCodec) ReadBody(b interface{}) error {
 	// read body
+	// read raw data
+	if v, ok := b.(*raw.Frame); ok {
+		v.Data = c.buf.rbuf.Bytes()
+		return nil
+	}
+
 	if err := c.codec.ReadBody(b); err != nil {
 		return errors.InternalServerError("go.micro.client.codec", err.Error())
 	}

client/rpc_stream.go

@@ -18,6 +18,12 @@ type rpcStream struct {
 	response Response
 	codec    codec.Codec
 	context  context.Context
+
+	// signal whether we should send EOS
+	sendEOS bool
+
+	// release releases the connection back to the pool
+	release func(err error)
 }
 
 func (r *rpcStream) isClosed() bool {
@@ -120,6 +126,26 @@ func (r *rpcStream) Close() error {
 		return nil
 	default:
 		close(r.closed)
-		return r.codec.Close()
+
+		// send the end of stream message
+		if r.sendEOS {
+			// no need to check for error
+			r.codec.Write(&codec.Message{
+				Id:       r.id,
+				Target:   r.request.Service(),
+				Method:   r.request.Method(),
+				Endpoint: r.request.Endpoint(),
+				Type:     codec.Error,
+				Error:    lastStreamResponseError,
+			}, nil)
+		}
+
+		err := r.codec.Close()
+
+		// release the connection
+		r.release(r.Error())
+
+		// return the codec error
+		return err
 	}
 }

client/selector/default.go

@@ -51,6 +51,9 @@ func (c *registrySelector) Select(service string, opts ...SelectOption) (Next, e
 	// if that fails go directly to the registry
 	services, err := c.rc.GetService(service)
 	if err != nil {
+		if err == registry.ErrNotFound {
+			return nil, ErrNotFound
+		}
 		return nil, err
 	}
 

client/selector/router/router.go

@@ -9,9 +9,9 @@ import (
 
 	"github.com/micro/go-micro/client"
 	"github.com/micro/go-micro/client/selector"
-	"github.com/micro/go-micro/network/router"
-	pb "github.com/micro/go-micro/network/router/proto"
 	"github.com/micro/go-micro/registry"
+	"github.com/micro/go-micro/router"
+	pb "github.com/micro/go-micro/router/proto"
 )
 
 type routerSelector struct {

codec/grpc/grpc.go

@@ -89,9 +89,22 @@ func (c *Codec) Write(m *codec.Message, b interface{}) error {
 		m.Header[":authority"] = m.Target
 		m.Header["content-type"] = c.ContentType
 	case codec.Response:
-		m.Header["Trailer"] = "grpc-status, grpc-message"
+		m.Header["Trailer"] = "grpc-status" //, grpc-message"
+		m.Header["content-type"] = c.ContentType
+		m.Header[":status"] = "200"
 		m.Header["grpc-status"] = "0"
-		m.Header["grpc-message"] = ""
+		//		m.Header["grpc-message"] = ""
+	case codec.Error:
+		m.Header["Trailer"] = "grpc-status, grpc-message"
+		// micro end of stream
+		if m.Error == "EOS" {
+			m.Header["grpc-status"] = "0"
+		} else {
+			m.Header["grpc-message"] = m.Error
+			m.Header["grpc-status"] = "13"
+		}
+
+		return nil
 	}
 
 	// marshal content

config/cmd/cmd.go

@@ -42,6 +42,7 @@ import (
 	tgrpc "github.com/micro/go-micro/transport/grpc"
 	thttp "github.com/micro/go-micro/transport/http"
 	tmem "github.com/micro/go-micro/transport/memory"
+	"github.com/micro/go-micro/transport/quic"
 )
 
 type Cmd interface {
@@ -211,6 +212,7 @@ var (
 		"memory": tmem.NewTransport,
 		"http":   thttp.NewTransport,
 		"grpc":   tgrpc.NewTransport,
+		"quic":   quic.NewTransport,
 	}
 
 	// used for default selection as the fall back

config/default_test.go

@@ -12,6 +12,10 @@ import (
 	"github.com/micro/go-micro/config/source/file"
 )
 
+var (
+	sep = string(os.PathSeparator)
+)
+
 func createFileForIssue18(t *testing.T, content string) *os.File {
 	data := []byte(content)
 	path := filepath.Join(os.TempDir(), fmt.Sprintf("file.%d", time.Now().UnixNano()))

config/source/consul/README.md

@@ -44,6 +44,6 @@ Load the source into config
 // Create new config
 conf := config.NewConfig()
 
-// Load file source
+// Load consul source
 conf.Load(consulSource)
 ```

config/source/consul/watcher.go

@@ -1,7 +1,6 @@
 package consul
 
 import (
-	"errors"
 	"time"
 
 	"github.com/hashicorp/consul/api"
@@ -80,7 +79,7 @@ func (w *watcher) Next() (*source.ChangeSet, error) {
 	case cs := <-w.ch:
 		return cs, nil
 	case <-w.exit:
-		return nil, errors.New("watcher stopped")
+		return nil, source.ErrWatcherStopped
 	}
 }
 

config/source/env/README.md

@@ -91,6 +91,6 @@ Load the source into config
 // Create new config
 conf := config.NewConfig()
 
-// Load file source
+// Load env source
 conf.Load(src)
 ```

config/source/env/env_test.go

@@ -86,8 +86,8 @@ func TestEnvvar_Prefixes(t *testing.T) {
 }
 
 func TestEnvvar_WatchNextNoOpsUntilStop(t *testing.T) {
-	source := NewSource(WithStrippedPrefix("GOMICRO_"))
-	w, err := source.Watch()
+	src := NewSource(WithStrippedPrefix("GOMICRO_"))
+	w, err := src.Watch()
 	if err != nil {
 		t.Error(err)
 	}
@@ -97,7 +97,7 @@ func TestEnvvar_WatchNextNoOpsUntilStop(t *testing.T) {
 		w.Stop()
 	}()
 
-	if _, err := w.Next(); err.Error() != "watcher stopped" {
+	if _, err := w.Next(); err != source.ErrWatcherStopped {
 		t.Errorf("expected watcher stopped error, got %v", err)
 	}
 }

config/source/env/watcher.go

@@ -1,8 +1,6 @@
 package env
 
 import (
-	"errors"
-
 	"github.com/micro/go-micro/config/source"
 )
 
@@ -13,7 +11,7 @@ type watcher struct {
 func (w *watcher) Next() (*source.ChangeSet, error) {
 	<-w.exit
 
-	return nil, errors.New("watcher stopped")
+	return nil, source.ErrWatcherStopped
 }
 
 func (w *watcher) Stop() error {

config/source/file/watcher.go

@@ -1,7 +1,8 @@
+//+build !linux
+
 package file
 
 import (
-	"errors"
 	"os"
 
 	"github.com/fsnotify/fsnotify"
@@ -34,7 +35,7 @@ func (w *watcher) Next() (*source.ChangeSet, error) {
 	// is it closed?
 	select {
 	case <-w.exit:
-		return nil, errors.New("watcher stopped")
+		return nil, source.ErrWatcherStopped
 	default:
 	}
 
@@ -57,7 +58,7 @@ func (w *watcher) Next() (*source.ChangeSet, error) {
 	case err := <-w.fw.Errors:
 		return nil, err
 	case <-w.exit:
-		return nil, errors.New("watcher stopped")
+		return nil, source.ErrWatcherStopped
 	}
 }
 

config/source/file/watcher_linux.go

@@ -0,0 +1,71 @@
+//+build linux
+
+package file
+
+import (
+	"os"
+
+	"github.com/fsnotify/fsnotify"
+	"github.com/micro/go-micro/config/source"
+)
+
+type watcher struct {
+	f *file
+
+	fw   *fsnotify.Watcher
+	exit chan bool
+}
+
+func newWatcher(f *file) (source.Watcher, error) {
+	fw, err := fsnotify.NewWatcher()
+	if err != nil {
+		return nil, err
+	}
+
+	fw.Add(f.path)
+
+	return &watcher{
+		f:    f,
+		fw:   fw,
+		exit: make(chan bool),
+	}, nil
+}
+
+func (w *watcher) Next() (*source.ChangeSet, error) {
+	// is it closed?
+	select {
+	case <-w.exit:
+		return nil, source.ErrWatcherStopped
+	default:
+	}
+
+	// try get the event
+	select {
+	case event, _ := <-w.fw.Events:
+		if event.Op == fsnotify.Rename {
+			// check existence of file, and add watch again
+			_, err := os.Stat(event.Name)
+			if err == nil || os.IsExist(err) {
+				w.fw.Add(event.Name)
+			}
+		}
+
+		c, err := w.f.Read()
+		if err != nil {
+			return nil, err
+		}
+
+		// add path again for the event bug of fsnotify
+		w.fw.Add(w.f.path)
+
+		return c, nil
+	case err := <-w.fw.Errors:
+		return nil, err
+	case <-w.exit:
+		return nil, source.ErrWatcherStopped
+	}
+}
+
+func (w *watcher) Stop() error {
+	return w.fw.Close()
+}

config/source/flag/README.md

@@ -42,6 +42,6 @@ Load the source into config
 // Create new config
 conf := config.NewConfig()
 
-// Load file source
+// Load flag source
 conf.Load(flagSource)
 ```

config/source/memory/README.md

@@ -27,7 +27,7 @@ Specify source with data
 
 ```go
 memorySource := memory.NewSource(
-	memory.WithData(data),
+	memory.WithJSON(data),
 )
 ```
 
@@ -39,6 +39,6 @@ Load the source into config
 // Create new config
 conf := config.NewConfig()
 
-// Load file source
+// Load memory source
 conf.Load(memorySource)
 ```

config/source/memory/memory.go

@@ -18,6 +18,7 @@ type memory struct {
 func (s *memory) Read() (*source.ChangeSet, error) {
 	s.RLock()
 	cs := &source.ChangeSet{
+		Format:    s.ChangeSet.Format,
 		Timestamp: s.ChangeSet.Timestamp,
 		Data:      s.ChangeSet.Data,
 		Checksum:  s.ChangeSet.Checksum,

config/source/source.go

@@ -2,9 +2,15 @@
 package source
 
 import (
+	"errors"
 	"time"
 )
 
+var (
+	// ErrWatcherStopped is returned when source watcher has been stopped
+	ErrWatcherStopped = errors.New("watcher stopped")
+)
+
 // Source is the source from which config is loaded
 type Source interface {
 	Read() (*ChangeSet, error)

debug/handler/debug.go

@@ -0,0 +1,41 @@
+package handler
+
+import (
+	"context"
+	"runtime"
+	"time"
+
+	proto "github.com/micro/go-micro/debug/proto"
+)
+
+type Debug struct {
+	proto.DebugHandler
+	started int64
+}
+
+var (
+	DefaultHandler = newDebug()
+)
+
+func newDebug() *Debug {
+	return &Debug{
+		started: time.Now().Unix(),
+	}
+}
+
+func (d *Debug) Health(ctx context.Context, req *proto.HealthRequest, rsp *proto.HealthResponse) error {
+	rsp.Status = "ok"
+	return nil
+}
+
+func (d *Debug) Stats(ctx context.Context, req *proto.StatsRequest, rsp *proto.StatsResponse) error {
+	var mstat runtime.MemStats
+	runtime.ReadMemStats(&mstat)
+
+	rsp.Started = uint64(d.started)
+	rsp.Uptime = uint64(time.Now().Unix() - d.started)
+	rsp.Memory = mstat.Alloc
+	rsp.Gc = mstat.PauseTotalNs
+	rsp.Threads = uint64(runtime.NumGoroutine())
+	return nil
+}

debug/proto/debug.micro.go

@@ -0,0 +1,108 @@
+// Code generated by protoc-gen-micro. DO NOT EDIT.
+// source: micro/go-micro/debug/proto/debug.proto
+
+package debug
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+import (
+	context "context"
+	client "github.com/micro/go-micro/client"
+	server "github.com/micro/go-micro/server"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ client.Option
+var _ server.Option
+
+// Client API for Debug service
+
+type DebugService interface {
+	Health(ctx context.Context, in *HealthRequest, opts ...client.CallOption) (*HealthResponse, error)
+	Stats(ctx context.Context, in *StatsRequest, opts ...client.CallOption) (*StatsResponse, error)
+}
+
+type debugService struct {
+	c    client.Client
+	name string
+}
+
+func NewDebugService(name string, c client.Client) DebugService {
+	if c == nil {
+		c = client.NewClient()
+	}
+	if len(name) == 0 {
+		name = "debug"
+	}
+	return &debugService{
+		c:    c,
+		name: name,
+	}
+}
+
+func (c *debugService) Health(ctx context.Context, in *HealthRequest, opts ...client.CallOption) (*HealthResponse, error) {
+	req := c.c.NewRequest(c.name, "Debug.Health", in)
+	out := new(HealthResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *debugService) Stats(ctx context.Context, in *StatsRequest, opts ...client.CallOption) (*StatsResponse, error) {
+	req := c.c.NewRequest(c.name, "Debug.Stats", in)
+	out := new(StatsResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for Debug service
+
+type DebugHandler interface {
+	Health(context.Context, *HealthRequest, *HealthResponse) error
+	Stats(context.Context, *StatsRequest, *StatsResponse) error
+}
+
+func RegisterDebugHandler(s server.Server, hdlr DebugHandler, opts ...server.HandlerOption) error {
+	type debug interface {
+		Health(ctx context.Context, in *HealthRequest, out *HealthResponse) error
+		Stats(ctx context.Context, in *StatsRequest, out *StatsResponse) error
+	}
+	type Debug struct {
+		debug
+	}
+	h := &debugHandler{hdlr}
+	return s.Handle(s.NewHandler(&Debug{h}, opts...))
+}
+
+type debugHandler struct {
+	DebugHandler
+}
+
+func (h *debugHandler) Health(ctx context.Context, in *HealthRequest, out *HealthResponse) error {
+	return h.DebugHandler.Health(ctx, in, out)
+}
+
+func (h *debugHandler) Stats(ctx context.Context, in *StatsRequest, out *StatsResponse) error {
+	return h.DebugHandler.Stats(ctx, in, out)
+}

debug/proto/debug.pb.go

@@ -0,0 +1,336 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: micro/go-micro/debug/proto/debug.proto
+
+package debug
+
+import (
+	context "context"
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	grpc "google.golang.org/grpc"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+type HealthRequest struct {
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *HealthRequest) Reset()         { *m = HealthRequest{} }
+func (m *HealthRequest) String() string { return proto.CompactTextString(m) }
+func (*HealthRequest) ProtoMessage()    {}
+func (*HealthRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f25415e61bccfa1f, []int{0}
+}
+
+func (m *HealthRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_HealthRequest.Unmarshal(m, b)
+}
+func (m *HealthRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_HealthRequest.Marshal(b, m, deterministic)
+}
+func (m *HealthRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_HealthRequest.Merge(m, src)
+}
+func (m *HealthRequest) XXX_Size() int {
+	return xxx_messageInfo_HealthRequest.Size(m)
+}
+func (m *HealthRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_HealthRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_HealthRequest proto.InternalMessageInfo
+
+type HealthResponse struct {
+	// default: ok
+	Status               string   `protobuf:"bytes,1,opt,name=status,proto3" json:"status,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *HealthResponse) Reset()         { *m = HealthResponse{} }
+func (m *HealthResponse) String() string { return proto.CompactTextString(m) }
+func (*HealthResponse) ProtoMessage()    {}
+func (*HealthResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f25415e61bccfa1f, []int{1}
+}
+
+func (m *HealthResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_HealthResponse.Unmarshal(m, b)
+}
+func (m *HealthResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_HealthResponse.Marshal(b, m, deterministic)
+}
+func (m *HealthResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_HealthResponse.Merge(m, src)
+}
+func (m *HealthResponse) XXX_Size() int {
+	return xxx_messageInfo_HealthResponse.Size(m)
+}
+func (m *HealthResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_HealthResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_HealthResponse proto.InternalMessageInfo
+
+func (m *HealthResponse) GetStatus() string {
+	if m != nil {
+		return m.Status
+	}
+	return ""
+}
+
+type StatsRequest struct {
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *StatsRequest) Reset()         { *m = StatsRequest{} }
+func (m *StatsRequest) String() string { return proto.CompactTextString(m) }
+func (*StatsRequest) ProtoMessage()    {}
+func (*StatsRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f25415e61bccfa1f, []int{2}
+}
+
+func (m *StatsRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_StatsRequest.Unmarshal(m, b)
+}
+func (m *StatsRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_StatsRequest.Marshal(b, m, deterministic)
+}
+func (m *StatsRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StatsRequest.Merge(m, src)
+}
+func (m *StatsRequest) XXX_Size() int {
+	return xxx_messageInfo_StatsRequest.Size(m)
+}
+func (m *StatsRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_StatsRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StatsRequest proto.InternalMessageInfo
+
+type StatsResponse struct {
+	// unix timestamp
+	Started uint64 `protobuf:"varint,1,opt,name=started,proto3" json:"started,omitempty"`
+	// in seconds
+	Uptime uint64 `protobuf:"varint,2,opt,name=uptime,proto3" json:"uptime,omitempty"`
+	// in bytes
+	Memory uint64 `protobuf:"varint,3,opt,name=memory,proto3" json:"memory,omitempty"`
+	// num threads
+	Threads uint64 `protobuf:"varint,4,opt,name=threads,proto3" json:"threads,omitempty"`
+	// total gc in nanoseconds
+	Gc                   uint64   `protobuf:"varint,5,opt,name=gc,proto3" json:"gc,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *StatsResponse) Reset()         { *m = StatsResponse{} }
+func (m *StatsResponse) String() string { return proto.CompactTextString(m) }
+func (*StatsResponse) ProtoMessage()    {}
+func (*StatsResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f25415e61bccfa1f, []int{3}
+}
+
+func (m *StatsResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_StatsResponse.Unmarshal(m, b)
+}
+func (m *StatsResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_StatsResponse.Marshal(b, m, deterministic)
+}
+func (m *StatsResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StatsResponse.Merge(m, src)
+}
+func (m *StatsResponse) XXX_Size() int {
+	return xxx_messageInfo_StatsResponse.Size(m)
+}
+func (m *StatsResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_StatsResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StatsResponse proto.InternalMessageInfo
+
+func (m *StatsResponse) GetStarted() uint64 {
+	if m != nil {
+		return m.Started
+	}
+	return 0
+}
+
+func (m *StatsResponse) GetUptime() uint64 {
+	if m != nil {
+		return m.Uptime
+	}
+	return 0
+}
+
+func (m *StatsResponse) GetMemory() uint64 {
+	if m != nil {
+		return m.Memory
+	}
+	return 0
+}
+
+func (m *StatsResponse) GetThreads() uint64 {
+	if m != nil {
+		return m.Threads
+	}
+	return 0
+}
+
+func (m *StatsResponse) GetGc() uint64 {
+	if m != nil {
+		return m.Gc
+	}
+	return 0
+}
+
+func init() {
+	proto.RegisterType((*HealthRequest)(nil), "HealthRequest")
+	proto.RegisterType((*HealthResponse)(nil), "HealthResponse")
+	proto.RegisterType((*StatsRequest)(nil), "StatsRequest")
+	proto.RegisterType((*StatsResponse)(nil), "StatsResponse")
+}
+
+func init() {
+	proto.RegisterFile("micro/go-micro/debug/proto/debug.proto", fileDescriptor_f25415e61bccfa1f)
+}
+
+var fileDescriptor_f25415e61bccfa1f = []byte{
+	// 230 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x54, 0x90, 0x41, 0x4b, 0xc4, 0x30,
+	0x10, 0x85, 0xb7, 0x75, 0x5b, 0x71, 0xb0, 0x59, 0xc8, 0x41, 0xc2, 0x9e, 0x24, 0x07, 0x29, 0x88,
+	0x59, 0xd0, 0xbf, 0xe0, 0xc1, 0x73, 0xbd, 0x0b, 0xd9, 0x76, 0xe8, 0x16, 0xac, 0xa9, 0x99, 0xe9,
+	0xc1, 0xb3, 0x7f, 0x5c, 0x9a, 0xa4, 0x60, 0x6f, 0xef, 0xbd, 0xf0, 0x1e, 0xf9, 0x06, 0x1e, 0xc6,
+	0xa1, 0xf5, 0xee, 0xd4, 0xbb, 0xa7, 0x28, 0x3a, 0x3c, 0xcf, 0xfd, 0x69, 0xf2, 0x8e, 0x93, 0x36,
+	0x41, 0xeb, 0x03, 0x54, 0x6f, 0x68, 0x3f, 0xf9, 0xd2, 0xe0, 0xf7, 0x8c, 0xc4, 0xba, 0x06, 0xb1,
+	0x06, 0x34, 0xb9, 0x2f, 0x42, 0x79, 0x07, 0x25, 0xb1, 0xe5, 0x99, 0x54, 0x76, 0x9f, 0xd5, 0x37,
+	0x4d, 0x72, 0x5a, 0xc0, 0xed, 0x3b, 0x5b, 0xa6, 0xb5, 0xf9, 0x9b, 0x41, 0x95, 0x82, 0xd4, 0x54,
+	0x70, 0x4d, 0x6c, 0x3d, 0x63, 0x17, 0xaa, 0xfb, 0x66, 0xb5, 0xcb, 0xe6, 0x3c, 0xf1, 0x30, 0xa2,
+	0xca, 0xc3, 0x43, 0x72, 0x4b, 0x3e, 0xe2, 0xe8, 0xfc, 0x8f, 0xba, 0x8a, 0x79, 0x74, 0xcb, 0x12,
+	0x5f, 0x3c, 0xda, 0x8e, 0xd4, 0x3e, 0x2e, 0x25, 0x2b, 0x05, 0xe4, 0x7d, 0xab, 0x8a, 0x10, 0xe6,
+	0x7d, 0xfb, 0xfc, 0x01, 0xc5, 0xeb, 0xc2, 0x27, 0x1f, 0xa1, 0x8c, 0x20, 0x52, 0x98, 0x0d, 0xe2,
+	0xf1, 0x60, 0xb6, 0x84, 0x7a, 0x27, 0x6b, 0x28, 0xc2, 0xd7, 0x65, 0x65, 0xfe, 0x33, 0x1d, 0x85,
+	0xd9, 0x10, 0xe9, 0xdd, 0xb9, 0x0c, 0x77, 0x7b, 0xf9, 0x0b, 0x00, 0x00, 0xff, 0xff, 0xfe, 0xb9,
+	0x5f, 0xf7, 0x61, 0x01, 0x00, 0x00,
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConn
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion4
+
+// DebugClient is the client API for Debug service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
+type DebugClient interface {
+	Health(ctx context.Context, in *HealthRequest, opts ...grpc.CallOption) (*HealthResponse, error)
+	Stats(ctx context.Context, in *StatsRequest, opts ...grpc.CallOption) (*StatsResponse, error)
+}
+
+type debugClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewDebugClient(cc *grpc.ClientConn) DebugClient {
+	return &debugClient{cc}
+}
+
+func (c *debugClient) Health(ctx context.Context, in *HealthRequest, opts ...grpc.CallOption) (*HealthResponse, error) {
+	out := new(HealthResponse)
+	err := c.cc.Invoke(ctx, "/Debug/Health", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *debugClient) Stats(ctx context.Context, in *StatsRequest, opts ...grpc.CallOption) (*StatsResponse, error) {
+	out := new(StatsResponse)
+	err := c.cc.Invoke(ctx, "/Debug/Stats", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// DebugServer is the server API for Debug service.
+type DebugServer interface {
+	Health(context.Context, *HealthRequest) (*HealthResponse, error)
+	Stats(context.Context, *StatsRequest) (*StatsResponse, error)
+}
+
+func RegisterDebugServer(s *grpc.Server, srv DebugServer) {
+	s.RegisterService(&_Debug_serviceDesc, srv)
+}
+
+func _Debug_Health_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(HealthRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DebugServer).Health(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/Debug/Health",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DebugServer).Health(ctx, req.(*HealthRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Debug_Stats_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(StatsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DebugServer).Stats(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/Debug/Stats",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DebugServer).Stats(ctx, req.(*StatsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+var _Debug_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "Debug",
+	HandlerType: (*DebugServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Health",
+			Handler:    _Debug_Health_Handler,
+		},
+		{
+			MethodName: "Stats",
+			Handler:    _Debug_Stats_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "micro/go-micro/debug/proto/debug.proto",
+}

debug/proto/debug.proto

@@ -1,13 +1,9 @@
 syntax = "proto3";
 
-// This is commented out due to import cycles.
-// But its what we expect the RPC service to 
-// return.
-//
-// service Debug {
-// 	rpc Health(HealthRequest) returns (HealthResponse) {}
-// 	rpc Stats(StatsRequest) returns (StatsResponse) {}
-// }
+service Debug {
+ 	rpc Health(HealthRequest) returns (HealthResponse) {}
+ 	rpc Stats(StatsRequest) returns (StatsResponse) {}
+}
 
 message HealthRequest {
 }

function_test.go

@@ -5,8 +5,8 @@ import (
 	"sync"
 	"testing"
 
+	proto "github.com/micro/go-micro/debug/proto"
 	"github.com/micro/go-micro/registry/memory"
-	proto "github.com/micro/go-micro/server/debug/proto"
 )
 
 func TestFunction(t *testing.T) {

go.mod

@@ -3,8 +3,9 @@ module github.com/micro/go-micro
 go 1.12
 
 require (
-	cloud.google.com/go v0.41.0 // indirect
+	cloud.google.com/go v0.44.0 // indirect
 	github.com/BurntSushi/toml v0.3.1
+	github.com/Microsoft/go-winio v0.4.14 // indirect
 	github.com/armon/circbuf v0.0.0-20190214190532-5111143e8da2 // indirect
 	github.com/armon/go-metrics v0.0.0-20190430140413-ec5e00d3c878 // indirect
 	github.com/armon/go-radix v1.0.0 // indirect
@@ -14,17 +15,17 @@ require (
 	github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc // indirect
 	github.com/forestgiant/sliceutil v0.0.0-20160425183142-94783f95db6c
 	github.com/fsnotify/fsnotify v1.4.7
-	github.com/fsouza/go-dockerclient v1.4.1
+	github.com/fsouza/go-dockerclient v1.4.2
 	github.com/ghodss/yaml v1.0.0
-	github.com/gliderlabs/ssh v0.2.2 // indirect
 	github.com/go-kit/kit v0.9.0 // indirect
 	github.com/go-log/log v0.1.0
 	github.com/go-playground/locales v0.12.1 // indirect
 	github.com/go-playground/universal-translator v0.16.0 // indirect
 	github.com/golang/protobuf v1.3.2
+	github.com/google/go-cmp v0.3.1 // indirect
+	github.com/google/pprof v0.0.0-20190723021845-34ac40c74b70 // indirect
 	github.com/google/uuid v1.1.1
-	github.com/gorilla/handlers v1.4.1
-	github.com/gorilla/mux v1.7.3 // indirect
+	github.com/gorilla/handlers v1.4.2
 	github.com/gorilla/websocket v1.4.0
 	github.com/hashicorp/consul/api v1.1.0
 	github.com/hashicorp/go-immutable-radix v1.1.0 // indirect
@@ -33,26 +34,28 @@ require (
 	github.com/hashicorp/go-rootcerts v1.0.1 // indirect
 	github.com/hashicorp/go-sockaddr v1.0.2 // indirect
 	github.com/hashicorp/go-version v1.2.0 // indirect
+	github.com/hashicorp/golang-lru v0.5.3 // indirect
 	github.com/hashicorp/hcl v1.0.0
 	github.com/hashicorp/mdns v1.0.1 // indirect
 	github.com/hashicorp/memberlist v0.1.4
 	github.com/hashicorp/serf v0.8.3 // indirect
 	github.com/imdario/mergo v0.3.7
 	github.com/joncalhoun/qson v0.0.0-20170526102502-8a9cab3a62b1
-	github.com/json-iterator/go v1.1.6
-	github.com/kevinburke/ssh_config v0.0.0-20190630040420-2e50c441276c // indirect
+	github.com/json-iterator/go v1.1.7
 	github.com/kisielk/errcheck v1.2.0 // indirect
 	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
-	github.com/kr/pty v1.1.8 // indirect
 	github.com/leodido/go-urn v1.1.0 // indirect
-	github.com/lucas-clemente/quic-go v0.7.1-0.20190710050138-1441923ab031
+	github.com/lucas-clemente/quic-go v0.12.0
 	github.com/mattn/go-colorable v0.1.2 // indirect
 	github.com/mattn/go-runewidth v0.0.4 // indirect
 	github.com/micro/cli v0.2.0
-	github.com/micro/mdns v0.2.0
+	github.com/micro/mdns v0.3.0
 	github.com/miekg/dns v1.1.15 // indirect
 	github.com/mitchellh/gox v1.0.1 // indirect
 	github.com/mitchellh/hashstructure v1.0.0
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
 	github.com/nats-io/nats.go v1.8.1
 	github.com/nats-io/nkeys v0.1.0 // indirect
 	github.com/nlopes/slack v0.5.0
@@ -61,24 +64,17 @@ require (
 	github.com/onsi/gomega v1.5.0 // indirect
 	github.com/pkg/errors v0.8.1
 	github.com/posener/complete v1.2.1 // indirect
-	github.com/prometheus/common v0.6.0 // indirect
-	github.com/prometheus/procfs v0.0.3 // indirect
+	github.com/prometheus/client_golang v1.1.0 // indirect
 	github.com/sirupsen/logrus v1.4.2 // indirect
-	github.com/stretchr/objx v0.2.0 // indirect
 	github.com/technoweenie/multipartstreamer v1.0.1 // indirect
 	golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4
-	golang.org/x/exp v0.0.0-20190627132806-fd42eb6b336f // indirect
-	golang.org/x/image v0.0.0-20190703141733-d6a02ce849c9 // indirect
-	golang.org/x/mobile v0.0.0-20190711165009-e47acb2ca7f9 // indirect
-	golang.org/x/mod v0.1.0 // indirect
-	golang.org/x/net v0.0.0-20190628185345-da137c7871d7
-	golang.org/x/sys v0.0.0-20190710143415-6ec70d6a5542 // indirect
-	golang.org/x/tools v0.0.0-20190711191110-9a621aea19f8 // indirect
-	google.golang.org/genproto v0.0.0-20190708153700-3bdd9d9f5532 // indirect
-	google.golang.org/grpc v1.22.0
-	gopkg.in/go-playground/validator.v9 v9.29.0
-	gopkg.in/src-d/go-billy.v4 v4.3.1 // indirect
-	gopkg.in/src-d/go-git.v4 v4.12.0
+	golang.org/x/mobile v0.0.0-20190806162312-597adff16ade // indirect
+	golang.org/x/net v0.0.0-20190724013045-ca1201d0de80
+	golang.org/x/sys v0.0.0-20190812073006-9eafafc0a87e // indirect
+	golang.org/x/tools v0.0.0-20190809145639-6d4652c779c4 // indirect
+	google.golang.org/grpc v1.22.1
+	gopkg.in/go-playground/validator.v9 v9.29.1
+	gopkg.in/src-d/go-git.v4 v4.13.1
 	gopkg.in/telegram-bot-api.v4 v4.6.4
-	honnef.co/go/tools v0.0.0-20190614002413-cb51c254f01b // indirect
+	honnef.co/go/tools v0.0.1-2019.2.2 // indirect
 )

go.sum

@@ -3,15 +3,22 @@ cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
 cloud.google.com/go v0.40.0/go.mod h1:Tk58MuI9rbLMKlAjeO/bDnteAx7tX2gJIXw4T5Jwlro=
 cloud.google.com/go v0.41.0/go.mod h1:OauMR7DV8fzvZIl2qg6rkaIhD/vmgk4iwEw/h6ercmg=
+cloud.google.com/go v0.43.0/go.mod h1:BOSR3VbTLkk6FDC/TcffxP4NF/FFBGA5ku+jvKOP7pg=
+cloud.google.com/go v0.44.0/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/DataDog/datadog-go v2.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
 github.com/Microsoft/go-winio v0.4.12/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
+github.com/Microsoft/go-winio v0.4.13/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
+github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
+github.com/Microsoft/hcsshim v0.8.6/go.mod h1:Op3hHsoHPAvb6lceZHDtd9OkTew38wNoXnJs8iY7rUg=
 github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7/go.mod h1:6zEj6s6u/ghQa61ZWa/C2Aw3RkjiTBOix7dkqa1VLIs=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/circbuf v0.0.0-20190214190532-5111143e8da2/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
@@ -26,6 +33,7 @@ github.com/beevik/ntp v0.2.0 h1:sGsd+kAXzT0bfVfzJfce04g+dSRfrs+tbQW8lweuYgw=
 github.com/beevik/ntp v0.2.0/go.mod h1:hIHWr+l3+/clUnF44zdK+CWW7fO8dR5cIylAQ76NRpg=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bitly/go-simplejson v0.5.0 h1:6IH+V8/tVMab511d5bn4M7EwGXZf9Hj6i2xSwkNEM+Y=
 github.com/bitly/go-simplejson v0.5.0/go.mod h1:cXHtHw4XUPsvGaxgjIAn8PhEWG9NfngEKAMDJEczWVA=
@@ -43,8 +51,12 @@ github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc/go.mod h1:GL
 github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/docker/distribution v2.7.1+incompatible h1:a5mlkVzth6W5A4fOsS3D2EO5BUmsJpcB+cRlLU7cSug=
+github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
 github.com/docker/docker v0.7.3-0.20190309235953-33c3200e0d16 h1:dmUn0SuGx7unKFwxyeQ/oLUHhEfZosEDrpmYM+6MTuc=
 github.com/docker/docker v0.7.3-0.20190309235953-33c3200e0d16/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/docker v1.4.2-0.20190710153559-aa8249ae1b8b h1:+Ga+YpCDpcY1fln6GI0fiiirpqHGcob5/Vk3oKNuGdU=
+github.com/docker/docker v1.4.2-0.20190710153559-aa8249ae1b8b/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
 github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
 github.com/docker/go-units v0.4.0 h1:3uh0PgVws3nIA0Q+MwDC8yjEPf9zjRfZZWXZYDct3Tw=
@@ -61,6 +73,8 @@ github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsouza/go-dockerclient v1.4.1 h1:W7wuJ3IB48WYZv/UBk9dCTIb9oX805+L9KIm65HcUYs=
 github.com/fsouza/go-dockerclient v1.4.1/go.mod h1:PUNHxbowDqRXfRgZqMz1OeGtbWC6VKyZvJ99hDjB0qs=
+github.com/fsouza/go-dockerclient v1.4.2 h1:dl6GfIWS5Qn4C6OfSnnoe6YuOV8lvKAE8W/YD1Q7udo=
+github.com/fsouza/go-dockerclient v1.4.2/go.mod h1:COunfLZrsdwX/j3YVDAG8gIw3KutrI0x1+vGEJ5zxdI=
 github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/gliderlabs/ssh v0.1.1/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
@@ -96,9 +110,12 @@ github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
 github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
 github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
+github.com/google/pprof v0.0.0-20190723021845-34ac40c74b70/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@@ -108,6 +125,8 @@ github.com/gorilla/handlers v1.4.0 h1:XulKRWSQK5uChr4pEgSE4Tc/OcmnU9GJuSwdog/tZs
 github.com/gorilla/handlers v1.4.0/go.mod h1:Qkdc/uu4tH4g6mTK6auzZ766c4CA0Ng8+o/OAirnOIQ=
 github.com/gorilla/handlers v1.4.1 h1:BHvcRGJe/TrL+OqFxoKQGddTgeibiOjaBssV5a/N9sw=
 github.com/gorilla/handlers v1.4.1/go.mod h1:Qkdc/uu4tH4g6mTK6auzZ766c4CA0Ng8+o/OAirnOIQ=
+github.com/gorilla/handlers v1.4.2 h1:0QniY0USkHQ1RGCLfKxeNHK9bkDHGRYGNDFBCS+YARg=
+github.com/gorilla/handlers v1.4.2/go.mod h1:Qkdc/uu4tH4g6mTK6auzZ766c4CA0Ng8+o/OAirnOIQ=
 github.com/gorilla/mux v1.7.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
@@ -150,6 +169,8 @@ github.com/hashicorp/golang-lru v0.5.0 h1:CL2msUPvZTLb5O648aiLNJw3hnBxN2+1Jq8rCO
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1 h1:0hERBMJE1eitiLkihrMvRVBYAkpHzc/J3QdDN+dAcgU=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
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@@ -174,12 +195,16 @@ github.com/joncalhoun/qson v0.0.0-20170526102502-8a9cab3a62b1 h1:lnrOS18wZBYrzdD
 github.com/joncalhoun/qson v0.0.0-20170526102502-8a9cab3a62b1/go.mod h1:DFXrEwSRX0p/aSvxE21319menCBFeQO0jXpRj7LEZUA=
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@@ -197,6 +222,8 @@ github.com/lucas-clemente/quic-go v0.7.1-0.20190710050138-1441923ab031 h1:wjcGvg
 github.com/lucas-clemente/quic-go v0.7.1-0.20190710050138-1441923ab031/go.mod h1:lb5aAxL68VvhZ00e7yYuQVK/9FLggtYy4qo7oI5qzqA=
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@@ -204,6 +231,8 @@ github.com/marten-seemann/qtls v0.2.4 h1:mCJ6i1jAqcsm9XODrSGvXECodoAb1STta+TkxJC
 github.com/marten-seemann/qtls v0.2.4/go.mod h1:xzjG7avBwGGbdZ8dTGxlBnLArsVKLvwmjgmPuiQEcYk=
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@@ -219,6 +248,8 @@ github.com/micro/mdns v0.1.1-0.20190729112526-ef68c9635478 h1:L6jnZZ763dMLlvst8P
 github.com/micro/mdns v0.1.1-0.20190729112526-ef68c9635478/go.mod h1:KJ0dW7KmicXU2BV++qkLlmHYcVv7/hHnbtguSWt9Aoc=
 github.com/micro/mdns v0.2.0 h1:/+/n2PSiJURrXsBIGtfCz0hex/XYKqVsn51GAGdFrOE=
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 github.com/miekg/dns v1.1.3 h1:1g0r1IvskvgL8rR+AcHzUA+oFmGcQlaIm4IqakufeMM=
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@@ -241,11 +272,14 @@ github.com/mitchellh/iochan v1.0.0/go.mod h1:JwYml1nuB7xOzsp52dPpHFffvOCDupsG0Qu
 github.com/mitchellh/mapstructure v0.0.0-20160808181253-ca63d7c062ee/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
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@@ -282,6 +316,7 @@ github.com/posener/complete v1.2.1/go.mod h1:6gapUrK/U1TAN7ciCoNRIdVC5sbdBTUh1DK
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
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@@ -301,6 +336,7 @@ github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAm
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@@ -339,9 +375,11 @@ golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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@@ -350,6 +388,7 @@ golang.org/x/lint v0.0.0-20190409202823-959b441ac422/go.mod h1:6SW0HCj/g11FgYtHl
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
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 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
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@@ -375,6 +414,8 @@ golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwL
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
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@@ -408,6 +449,12 @@ golang.org/x/sys v0.0.0-20190621062556-bf70e4678053/go.mod h1:h1NjWce9XRLGQEsW7w
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+golang.org/x/sys v0.0.0-20190804053845-51ab0e2deafa h1:KIDDMLT1O0Nr7TSxp8xM5tJcdn8tgyAONntO829og1M=
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@@ -429,12 +476,19 @@ golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBn
 golang.org/x/tools v0.0.0-20190530171427-2b03ca6e44eb/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190606124116-d0a3d012864b/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190620191750-1fa568393b23/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
+golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190624190245-7f2218787638/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
+golang.org/x/tools v0.0.0-20190628153133-6cdbf07be9d0/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190710184609-286818132824/go.mod h1:jcCCGcm9btYwXyDqrUWc6MKQKKGJCWEQ3AfLSRIbEuI=
 golang.org/x/tools v0.0.0-20190711191110-9a621aea19f8/go.mod h1:jcCCGcm9btYwXyDqrUWc6MKQKKGJCWEQ3AfLSRIbEuI=
+golang.org/x/tools v0.0.0-20190729092621-ff9f1409240a/go.mod h1:jcCCGcm9btYwXyDqrUWc6MKQKKGJCWEQ3AfLSRIbEuI=
+golang.org/x/tools v0.0.0-20190807201305-8be58fba6352/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20190809145639-6d4652c779c4/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.6.0/go.mod h1:btoxGiFvQNVUZQ8W08zLtrVS08CNpINPEfxXxgJL1Q4=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
+google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
@@ -452,12 +506,17 @@ google.golang.org/genproto v0.0.0-20190620144150-6af8c5fc6601/go.mod h1:z3L6/3dT
 google.golang.org/genproto v0.0.0-20190626174449-989357319d63/go.mod h1:z3L6/3dTEVtUr6QSP8miRzeRqwQOioJ9I66odjN4I7s=
 google.golang.org/genproto v0.0.0-20190708153700-3bdd9d9f5532 h1:5pOB7se0B2+IssELuQUs6uoBgYJenkU2AQlvopc2sRw=
 google.golang.org/genproto v0.0.0-20190708153700-3bdd9d9f5532/go.mod h1:z3L6/3dTEVtUr6QSP8miRzeRqwQOioJ9I66odjN4I7s=
+google.golang.org/genproto v0.0.0-20190716160619-c506a9f90610/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
+google.golang.org/genproto v0.0.0-20190801165951-fa694d86fc64 h1:iKtrH9Y8mcbADOP0YFaEMth7OfuHY9xHOwNj4znpM1A=
+google.golang.org/genproto v0.0.0-20190801165951-fa694d86fc64/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1 h1:j6XxA85m/6txkUCHvzlV5f+HBNl/1r5cZ2A/3IEFOO8=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
 google.golang.org/grpc v1.22.0 h1:J0UbZOIrCAl+fpTOf8YLs4dJo8L/owV4LYVtAXQoPkw=
 google.golang.org/grpc v1.22.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.22.1 h1:/7cs52RnTJmD43s3uxzlq2U7nqVTd/37viQwMrMNlOM=
+google.golang.org/grpc v1.22.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -465,18 +524,24 @@ gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/go-playground/validator.v9 v9.29.0 h1:5ofssLNYgAA/inWn6rTZ4juWpRJUwEnXc1LG2IeXwgQ=
 gopkg.in/go-playground/validator.v9 v9.29.0/go.mod h1:+c9/zcJMFNgbLvly1L1V+PpxWdVbfP1avr/N00E2vyQ=
+gopkg.in/go-playground/validator.v9 v9.29.1 h1:SvGtYmN60a5CVKTOzMSyfzWDeZRxRuGvRQyEAKbw1xc=
+gopkg.in/go-playground/validator.v9 v9.29.1/go.mod h1:+c9/zcJMFNgbLvly1L1V+PpxWdVbfP1avr/N00E2vyQ=
 gopkg.in/src-d/go-billy.v4 v4.2.1 h1:omN5CrMrMcQ+4I8bJ0wEhOBPanIRWzFC953IiXKdYzo=
 gopkg.in/src-d/go-billy.v4 v4.2.1/go.mod h1:tm33zBoOwxjYHZIE+OV8bxTWFMJLrconzFMd38aARFk=
 gopkg.in/src-d/go-billy.v4 v4.3.0 h1:KtlZ4c1OWbIs4jCv5ZXrTqG8EQocr0g/d4DjNg70aek=
 gopkg.in/src-d/go-billy.v4 v4.3.0/go.mod h1:tm33zBoOwxjYHZIE+OV8bxTWFMJLrconzFMd38aARFk=
 gopkg.in/src-d/go-billy.v4 v4.3.1 h1:OkK1DmefDy1Z6Veu82wdNj/cLpYORhdX4qdaYCPwc7s=
 gopkg.in/src-d/go-billy.v4 v4.3.1/go.mod h1:tm33zBoOwxjYHZIE+OV8bxTWFMJLrconzFMd38aARFk=
+gopkg.in/src-d/go-billy.v4 v4.3.2 h1:0SQA1pRztfTFx2miS8sA97XvooFeNOmvUenF4o0EcVg=
+gopkg.in/src-d/go-billy.v4 v4.3.2/go.mod h1:nDjArDMp+XMs1aFAESLRjfGSgfvoYN0hDfzEk0GjC98=
 gopkg.in/src-d/go-git-fixtures.v3 v3.1.1/go.mod h1:dLBcvytrw/TYZsNTWCnkNF2DSIlzWYqTe3rJR56Ac7g=
 gopkg.in/src-d/go-git-fixtures.v3 v3.5.0/go.mod h1:dLBcvytrw/TYZsNTWCnkNF2DSIlzWYqTe3rJR56Ac7g=
 gopkg.in/src-d/go-git.v4 v4.11.0 h1:cJwWgJ0DXifrNrXM6RGN1Y2yR60Rr1zQ9Q5DX5S9qgU=
 gopkg.in/src-d/go-git.v4 v4.11.0/go.mod h1:Vtut8izDyrM8BUVQnzJ+YvmNcem2J89EmfZYCkLokZk=
 gopkg.in/src-d/go-git.v4 v4.12.0 h1:CKgvBCJCcdfNnyXPYI4Cp8PaDDAmAPEN0CtfEdEAbd8=
 gopkg.in/src-d/go-git.v4 v4.12.0/go.mod h1:zjlNnzc1Wjn43v3Mtii7RVxiReNP0fIu9npcXKzuNp4=
+gopkg.in/src-d/go-git.v4 v4.13.1 h1:SRtFyV8Kxc0UP7aCHcijOMQGPxHSmMOPrzulQWolkYE=
+gopkg.in/src-d/go-git.v4 v4.13.1/go.mod h1:nx5NYcxdKxq5fpltdHnPa2Exj4Sx0EclMWZQbYDu2z8=
 gopkg.in/telegram-bot-api.v4 v4.6.4 h1:hpHWhzn4jTCsAJZZ2loNKfy2QWyPDRJVl3aTFXeMW8g=
 gopkg.in/telegram-bot-api.v4 v4.6.4/go.mod h1:5DpGO5dbumb40px+dXcwCpcjmeHNYLpk0bp3XRNvWDM=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
@@ -491,4 +556,5 @@ honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190614002413-cb51c254f01b/go.mod h1:JlmFZigtG9vBVR3QGIQ9g/Usz4BzH+Xm6Z8iHQWRYUw=
+honnef.co/go/tools v0.0.1-2019.2.2/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=

monitor/default.go

@@ -0,0 +1,318 @@
+package monitor
+
+import (
+	"context"
+	"errors"
+	"sync"
+	"time"
+
+	"github.com/micro/go-micro/client"
+	pb "github.com/micro/go-micro/debug/proto"
+	"github.com/micro/go-micro/registry"
+	"github.com/micro/go-micro/registry/cache"
+)
+
+type monitor struct {
+	options Options
+
+	exit     chan bool
+	registry cache.Cache
+	client   client.Client
+
+	sync.RWMutex
+	running  bool
+	services map[string]*Status
+}
+
+// check provides binary running/failed status.
+// In the event Debug.Health cannot be called on a service we reap the node.
+func (m *monitor) check(service string) (*Status, error) {
+	services, err := m.registry.GetService(service)
+	if err != nil {
+		return nil, err
+	}
+
+	// create debug client
+	debug := pb.NewDebugService(service, m.client)
+
+	var status *Status
+	var gerr error
+
+	// iterate through multiple versions of a service
+	for _, service := range services {
+		for _, node := range service.Nodes {
+			// TODO: checks that are not just RPC based
+			// TODO: better matching of the protocol
+			// TODO: maybe everything has to be a go-micro service?
+			if node.Metadata["server"] != m.client.String() {
+				continue
+			}
+
+			rsp, err := debug.Health(
+				context.Background(),
+				// empty health request
+				&pb.HealthRequest{},
+				// call this specific node
+				client.WithAddress(node.Address),
+				// retry in the event of failure
+				client.WithRetries(3),
+			)
+			if err != nil {
+				// reap the dead node
+				m.registry.Deregister(&registry.Service{
+					Name:    service.Name,
+					Version: service.Version,
+					Nodes:   []*registry.Node{node},
+				})
+
+				// save the error
+				gerr = err
+				continue
+			}
+
+			// expecting ok response status
+			if rsp.Status != "ok" {
+				gerr = errors.New(rsp.Status)
+				continue
+			}
+
+			// no error set status
+			status = &Status{
+				Code: StatusRunning,
+				Info: "running",
+			}
+		}
+	}
+
+	// if we got the success case return it
+	if status != nil {
+		return status, nil
+	}
+
+	// if gerr is not nil return it
+	if gerr != nil {
+		return &Status{
+			Code:  StatusFailed,
+			Info:  "not running",
+			Error: gerr.Error(),
+		}, nil
+	}
+
+	// otherwise unknown status
+	return &Status{
+		Code: StatusUnknown,
+		Info: "unknown status",
+	}, nil
+}
+
+func (m *monitor) reap() {
+	services, err := m.registry.ListServices()
+	if err != nil {
+		return
+	}
+
+	serviceMap := make(map[string]bool)
+	for _, service := range services {
+		serviceMap[service.Name] = true
+	}
+
+	m.Lock()
+	defer m.Unlock()
+
+	// range over our watched services
+	for service, _ := range m.services {
+		// check if the service exists in the registry
+		if !serviceMap[service] {
+			// if not, delete it in our status map
+			delete(m.services, service)
+		}
+	}
+}
+
+func (m *monitor) run() {
+	// check the status every tick
+	t := time.NewTicker(time.Minute)
+	defer t.Stop()
+
+	// reap dead services
+	t2 := time.NewTicker(time.Hour)
+	defer t2.Stop()
+
+	// list the known services
+	services, _ := m.registry.ListServices()
+
+	// create a check chan of same length
+	check := make(chan string, len(services))
+
+	// front-load the services to watch
+	for _, service := range services {
+		check <- service.Name
+	}
+
+	for {
+		select {
+		// exit if we're told to
+		case <-m.exit:
+			return
+		// check a service when told to
+		case service := <-check:
+			// check the status
+			status, err := m.check(service)
+			if err != nil {
+				status = &Status{
+					Code: StatusUnknown,
+					Info: "unknown status",
+				}
+			}
+
+			// save the status
+			m.Lock()
+			m.services[service] = status
+			m.Unlock()
+		// on the tick interval get all services and issue a check
+		case <-t.C:
+			// create a list of services
+			serviceMap := make(map[string]bool)
+
+			m.RLock()
+			for service, _ := range m.services {
+				serviceMap[service] = true
+			}
+			m.RUnlock()
+
+			go func() {
+				// check the status of all watched services
+				for service, _ := range serviceMap {
+					select {
+					case <-m.exit:
+						return
+					case check <- service:
+					default:
+						// barf if we block
+					}
+				}
+
+				// list services
+				services, _ := m.registry.ListServices()
+
+				for _, service := range services {
+					// start watching the service
+					if ok := serviceMap[service.Name]; !ok {
+						m.Watch(service.Name)
+					}
+				}
+			}()
+		case <-t2.C:
+			// reap any dead/non-existent services
+			m.reap()
+		}
+	}
+}
+
+func (m *monitor) Reap(service string) error {
+	services, err := m.registry.GetService(service)
+	if err != nil {
+		return nil
+	}
+	m.Lock()
+	defer m.Unlock()
+	delete(m.services, service)
+	for _, service := range services {
+		m.registry.Deregister(service)
+	}
+	return nil
+}
+
+func (m *monitor) Status(service string) (Status, error) {
+	m.RLock()
+	defer m.RUnlock()
+	if status, ok := m.services[service]; ok {
+		return *status, nil
+	}
+	return Status{}, ErrNotWatching
+}
+
+func (m *monitor) Watch(service string) error {
+	m.Lock()
+	defer m.Unlock()
+
+	// check if we're watching
+	if _, ok := m.services[service]; ok {
+		return nil
+	}
+
+	// get the status
+	status, err := m.check(service)
+	if err != nil {
+		return err
+	}
+
+	// set the status
+	m.services[service] = status
+	return nil
+}
+
+func (m *monitor) Run() error {
+	m.Lock()
+	defer m.Unlock()
+
+	if m.running {
+		return nil
+	}
+
+	// reset the exit channel
+	m.exit = make(chan bool)
+	// setup a new cache
+	m.registry = cache.New(m.options.Registry)
+
+	// start running
+	go m.run()
+
+	// set to running
+	m.running = true
+
+	return nil
+}
+
+func (m *monitor) Stop() error {
+	m.Lock()
+	defer m.Unlock()
+
+	if !m.running {
+		return nil
+	}
+
+	select {
+	case <-m.exit:
+		return nil
+	default:
+		close(m.exit)
+		for s, _ := range m.services {
+			delete(m.services, s)
+		}
+		m.registry.Stop()
+		m.running = false
+		return nil
+	}
+
+	return nil
+}
+
+func newMonitor(opts ...Option) Monitor {
+	options := Options{
+		Client:   client.DefaultClient,
+		Registry: registry.DefaultRegistry,
+	}
+
+	for _, o := range opts {
+		o(&options)
+	}
+
+	return &monitor{
+		options:  options,
+		exit:     make(chan bool),
+		client:   options.Client,
+		registry: cache.New(options.Registry),
+		services: make(map[string]*Status),
+	}
+}

monitor/default_test.go

@@ -0,0 +1,37 @@
+package monitor
+
+import (
+	"testing"
+)
+
+func TestMonitor(t *testing.T) {
+	// create new monitor
+	m := NewMonitor()
+
+	if err := m.Run(); err != nil {
+		t.Fatalf("failed to stop monitor: %v", err)
+	}
+
+	services := []string{"foo", "bar", "baz"}
+
+	for _, service := range services {
+		_, err := m.Status(service)
+		if err == nil {
+			t.Fatal("expected status error for unknown service")
+		}
+
+		if err := m.Watch(service); err == nil {
+			t.Fatal("expected watch error for unknown service")
+		}
+
+		// TODO:
+		// 1. start a service
+		// 2. watch service
+		// 3. get service status
+	}
+
+	// stop monitor
+	if err := m.Stop(); err != nil {
+		t.Fatalf("failed to stop monitor: %v", err)
+	}
+}

monitor/monitor.go

@@ -0,0 +1,43 @@
+// Package monitor monitors service health
+package monitor
+
+import (
+	"errors"
+)
+
+const (
+	StatusUnknown StatusCode = iota
+	StatusRunning
+	StatusFailed
+)
+
+type StatusCode int
+
+// Monitor monitors a service and reaps dead instances
+type Monitor interface {
+	// Reap a service and stop monitoring
+	Reap(service string) error
+	// Status of the service
+	Status(service string) (Status, error)
+	// Watch starts watching the service
+	Watch(service string) error
+	// Run the monitor to watch all services
+	Run() error
+	// Stop monitoring
+	Stop() error
+}
+
+type Status struct {
+	Code  StatusCode
+	Info  string
+	Error string
+}
+
+var (
+	ErrNotWatching = errors.New("not watching")
+)
+
+// NewMonitor returns a new monitor
+func NewMonitor(opts ...Option) Monitor {
+	return newMonitor(opts...)
+}

monitor/options.go

@@ -0,0 +1,25 @@
+package monitor
+
+import (
+	"github.com/micro/go-micro/client"
+	"github.com/micro/go-micro/registry"
+)
+
+type Options struct {
+	Client   client.Client
+	Registry registry.Registry
+}
+
+type Option func(*Options)
+
+func Client(c client.Client) Option {
+	return func(o *Options) {
+		o.Client = c
+	}
+}
+
+func Registry(r registry.Registry) Option {
+	return func(o *Options) {
+		o.Registry = r
+	}
+}

network/handler/handler.go

@@ -0,0 +1,111 @@
+// Package handler implements network RPC handler
+package handler
+
+import (
+	"context"
+	"sort"
+
+	"github.com/micro/go-micro/errors"
+	"github.com/micro/go-micro/network"
+	pbNet "github.com/micro/go-micro/network/proto"
+	pbRtr "github.com/micro/go-micro/router/proto"
+)
+
+// Network implements network handler
+type Network struct {
+	Network network.Network
+}
+
+// ListRoutes returns a list of routing table routes
+func (n *Network) ListRoutes(ctx context.Context, req *pbRtr.Request, resp *pbRtr.ListResponse) error {
+	routes, err := n.Network.Options().Router.Table().List()
+	if err != nil {
+		return errors.InternalServerError("go.micro.network", "failed to list routes: %s", err)
+	}
+
+	var respRoutes []*pbRtr.Route
+	for _, route := range routes {
+		respRoute := &pbRtr.Route{
+			Service: route.Service,
+			Address: route.Address,
+			Gateway: route.Gateway,
+			Network: route.Network,
+			Router:  route.Router,
+			Link:    route.Link,
+			Metric:  int64(route.Metric),
+		}
+		respRoutes = append(respRoutes, respRoute)
+	}
+
+	resp.Routes = respRoutes
+
+	return nil
+}
+
+// ListNodes returns a list of all accessible nodes in the network
+func (n *Network) ListNodes(ctx context.Context, req *pbNet.ListRequest, resp *pbNet.ListResponse) error {
+	nodes := n.Network.Nodes()
+
+	var respNodes []*pbNet.Node
+	for _, node := range nodes {
+		respNode := &pbNet.Node{
+			Id:      node.Id(),
+			Address: node.Address(),
+		}
+		respNodes = append(respNodes, respNode)
+	}
+
+	resp.Nodes = respNodes
+
+	return nil
+}
+
+// Neighbourhood returns a list of immediate neighbours
+func (n *Network) Neighbourhood(ctx context.Context, req *pbNet.NeighbourhoodRequest, resp *pbNet.NeighbourhoodResponse) error {
+	// extract the id of the node to query
+	id := req.Id
+	// if no id is passed, we assume local node
+	if id == "" {
+		id = n.Network.Id()
+	}
+
+	// get all the nodes in the network
+	nodes := n.Network.Nodes()
+
+	// sort the slice of nodes
+	sort.Slice(nodes, func(i, j int) bool { return nodes[i].Id() <= nodes[j].Id() })
+	// find a node with a given id
+	i := sort.Search(len(nodes), func(j int) bool { return nodes[j].Id() >= id })
+
+	var neighbours []*pbNet.Node
+	// collect all the nodes in the neighbourhood of the found node
+	if i < len(nodes) && nodes[i].Id() == id {
+		for _, neighbour := range nodes[i].Neighbourhood() {
+			// don't return yourself in response
+			if neighbour.Id() == n.Network.Id() {
+				continue
+			}
+			pbNeighbour := &pbNet.Node{
+				Id:      neighbour.Id(),
+				Address: neighbour.Address(),
+			}
+			neighbours = append(neighbours, pbNeighbour)
+		}
+	}
+
+	// requested neighbourhood node
+	node := &pbNet.Node{
+		Id:      nodes[i].Id(),
+		Address: nodes[i].Address(),
+	}
+
+	// creaate neighbourhood answer
+	neighbourhood := &pbNet.Neighbour{
+		Node:       node,
+		Neighbours: neighbours,
+	}
+
+	resp.Neighbourhood = neighbourhood
+
+	return nil
+}

network/network.go

@@ -0,0 +1,60 @@
+// Package network is for creating internetworks
+package network
+
+import (
+	"time"
+
+	"github.com/micro/go-micro/client"
+	"github.com/micro/go-micro/server"
+)
+
+var (
+	// DefaultName is default network name
+	DefaultName = "go.micro"
+	// DefaultAddress is default network address
+	DefaultAddress = ":0"
+	// ResolveTime defines time interval to periodically resolve network nodes
+	ResolveTime = 1 * time.Minute
+	// AnnounceTime defines time interval to periodically announce node neighbours
+	AnnounceTime = 30 * time.Second
+	// PruneTime defines time interval to periodically check nodes that need to be pruned
+	// due to their not announcing their presence within this time interval
+	PruneTime = 90 * time.Second
+)
+
+// Node is network node
+type Node interface {
+	// Id is node id
+	Id() string
+	// Address is node bind address
+	Address() string
+	// Neighbourhood is node neighbourhood
+	Neighbourhood() []Node
+	// Network is the network node is in
+	Network() Network
+}
+
+// Network is micro network
+type Network interface {
+	// Node is network node
+	Node
+	// Options returns the network options
+	Options() Options
+	// Name of the network
+	Name() string
+	// Connect starts the resolver and tunnel server
+	Connect() error
+	// Nodes returns list of network nodes
+	Nodes() []Node
+	// Close stops the tunnel and resolving
+	Close() error
+	// Client is micro client
+	Client() client.Client
+	// Server is micro server
+	Server() server.Server
+}
+
+// NewNetwork returns a new network interface
+func NewNetwork(opts ...Option) Network {
+	return newNetwork(opts...)
+}

network/options.go

@@ -0,0 +1,103 @@
+package network
+
+import (
+	"github.com/google/uuid"
+	"github.com/micro/go-micro/network/resolver"
+	"github.com/micro/go-micro/network/resolver/registry"
+	"github.com/micro/go-micro/proxy"
+	"github.com/micro/go-micro/proxy/mucp"
+	"github.com/micro/go-micro/router"
+	"github.com/micro/go-micro/tunnel"
+)
+
+type Option func(*Options)
+
+// Options configure network
+type Options struct {
+	// Id of the node
+	Id string
+	// Name of the network
+	Name string
+	// Address to bind to
+	Address string
+	// Nodes is a list of seed nodes
+	Nodes []string
+	// Tunnel is network tunnel
+	Tunnel tunnel.Tunnel
+	// Router is network router
+	Router router.Router
+	// Proxy is network proxy
+	Proxy proxy.Proxy
+	// Resolver is network resolver
+	Resolver resolver.Resolver
+}
+
+// Id sets the id of the network node
+func Id(id string) Option {
+	return func(o *Options) {
+		o.Id = id
+	}
+}
+
+// Name sets the network name
+func Name(n string) Option {
+	return func(o *Options) {
+		o.Name = n
+	}
+}
+
+// Address sets the network address
+func Address(a string) Option {
+	return func(o *Options) {
+		o.Address = a
+	}
+}
+
+// Nodes is a list of seed nodes used along
+// with resolved node
+func Nodes(n ...string) Option {
+	return func(o *Options) {
+		o.Nodes = n
+	}
+}
+
+// Tunnel sets the network tunnel
+func Tunnel(t tunnel.Tunnel) Option {
+	return func(o *Options) {
+		o.Tunnel = t
+	}
+}
+
+// Router sets the network router
+func Router(r router.Router) Option {
+	return func(o *Options) {
+		o.Router = r
+	}
+}
+
+// Proxy sets the network proxy
+func Proxy(p proxy.Proxy) Option {
+	return func(o *Options) {
+		o.Proxy = p
+	}
+}
+
+// Resolver is the network resolver
+func Resolver(r resolver.Resolver) Option {
+	return func(o *Options) {
+		o.Resolver = r
+	}
+}
+
+// DefaultOptions returns network default options
+func DefaultOptions() Options {
+	return Options{
+		Id:       uuid.New().String(),
+		Name:     DefaultName,
+		Address:  DefaultAddress,
+		Tunnel:   tunnel.NewTunnel(),
+		Router:   router.DefaultRouter,
+		Proxy:    mucp.NewProxy(),
+		Resolver: &registry.Resolver{},
+	}
+}

network/proto/network.micro.go

@@ -0,0 +1,126 @@
+// Code generated by protoc-gen-micro. DO NOT EDIT.
+// source: network.proto
+
+package go_micro_network
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	proto1 "github.com/micro/go-micro/router/proto"
+	math "math"
+)
+
+import (
+	context "context"
+	client "github.com/micro/go-micro/client"
+	server "github.com/micro/go-micro/server"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ client.Option
+var _ server.Option
+
+// Client API for Network service
+
+type NetworkService interface {
+	ListRoutes(ctx context.Context, in *proto1.Request, opts ...client.CallOption) (*proto1.ListResponse, error)
+	ListNodes(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error)
+	Neighbourhood(ctx context.Context, in *NeighbourhoodRequest, opts ...client.CallOption) (*NeighbourhoodResponse, error)
+}
+
+type networkService struct {
+	c    client.Client
+	name string
+}
+
+func NewNetworkService(name string, c client.Client) NetworkService {
+	if c == nil {
+		c = client.NewClient()
+	}
+	if len(name) == 0 {
+		name = "go.micro.network"
+	}
+	return &networkService{
+		c:    c,
+		name: name,
+	}
+}
+
+func (c *networkService) ListRoutes(ctx context.Context, in *proto1.Request, opts ...client.CallOption) (*proto1.ListResponse, error) {
+	req := c.c.NewRequest(c.name, "Network.ListRoutes", in)
+	out := new(proto1.ListResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *networkService) ListNodes(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error) {
+	req := c.c.NewRequest(c.name, "Network.ListNodes", in)
+	out := new(ListResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *networkService) Neighbourhood(ctx context.Context, in *NeighbourhoodRequest, opts ...client.CallOption) (*NeighbourhoodResponse, error) {
+	req := c.c.NewRequest(c.name, "Network.Neighbourhood", in)
+	out := new(NeighbourhoodResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for Network service
+
+type NetworkHandler interface {
+	ListRoutes(context.Context, *proto1.Request, *proto1.ListResponse) error
+	ListNodes(context.Context, *ListRequest, *ListResponse) error
+	Neighbourhood(context.Context, *NeighbourhoodRequest, *NeighbourhoodResponse) error
+}
+
+func RegisterNetworkHandler(s server.Server, hdlr NetworkHandler, opts ...server.HandlerOption) error {
+	type network interface {
+		ListRoutes(ctx context.Context, in *proto1.Request, out *proto1.ListResponse) error
+		ListNodes(ctx context.Context, in *ListRequest, out *ListResponse) error
+		Neighbourhood(ctx context.Context, in *NeighbourhoodRequest, out *NeighbourhoodResponse) error
+	}
+	type Network struct {
+		network
+	}
+	h := &networkHandler{hdlr}
+	return s.Handle(s.NewHandler(&Network{h}, opts...))
+}
+
+type networkHandler struct {
+	NetworkHandler
+}
+
+func (h *networkHandler) ListRoutes(ctx context.Context, in *proto1.Request, out *proto1.ListResponse) error {
+	return h.NetworkHandler.ListRoutes(ctx, in, out)
+}
+
+func (h *networkHandler) ListNodes(ctx context.Context, in *ListRequest, out *ListResponse) error {
+	return h.NetworkHandler.ListNodes(ctx, in, out)
+}
+
+func (h *networkHandler) Neighbourhood(ctx context.Context, in *NeighbourhoodRequest, out *NeighbourhoodResponse) error {
+	return h.NetworkHandler.Neighbourhood(ctx, in, out)
+}

network/proto/network.pb.go

@@ -0,0 +1,438 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: network.proto
+
+package go_micro_network
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	_ "github.com/micro/go-micro/router/proto"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// Empty request
+type ListRequest struct {
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ListRequest) Reset()         { *m = ListRequest{} }
+func (m *ListRequest) String() string { return proto.CompactTextString(m) }
+func (*ListRequest) ProtoMessage()    {}
+func (*ListRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8571034d60397816, []int{0}
+}
+
+func (m *ListRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ListRequest.Unmarshal(m, b)
+}
+func (m *ListRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ListRequest.Marshal(b, m, deterministic)
+}
+func (m *ListRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ListRequest.Merge(m, src)
+}
+func (m *ListRequest) XXX_Size() int {
+	return xxx_messageInfo_ListRequest.Size(m)
+}
+func (m *ListRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_ListRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ListRequest proto.InternalMessageInfo
+
+// ListResponse is returned by ListNodes and ListNeighbours
+type ListResponse struct {
+	Nodes                []*Node  `protobuf:"bytes,1,rep,name=nodes,proto3" json:"nodes,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ListResponse) Reset()         { *m = ListResponse{} }
+func (m *ListResponse) String() string { return proto.CompactTextString(m) }
+func (*ListResponse) ProtoMessage()    {}
+func (*ListResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8571034d60397816, []int{1}
+}
+
+func (m *ListResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ListResponse.Unmarshal(m, b)
+}
+func (m *ListResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ListResponse.Marshal(b, m, deterministic)
+}
+func (m *ListResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ListResponse.Merge(m, src)
+}
+func (m *ListResponse) XXX_Size() int {
+	return xxx_messageInfo_ListResponse.Size(m)
+}
+func (m *ListResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_ListResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ListResponse proto.InternalMessageInfo
+
+func (m *ListResponse) GetNodes() []*Node {
+	if m != nil {
+		return m.Nodes
+	}
+	return nil
+}
+
+// NeighbourhoodRequest is sent to query node neighbourhood
+type NeighbourhoodRequest struct {
+	Id                   string   `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *NeighbourhoodRequest) Reset()         { *m = NeighbourhoodRequest{} }
+func (m *NeighbourhoodRequest) String() string { return proto.CompactTextString(m) }
+func (*NeighbourhoodRequest) ProtoMessage()    {}
+func (*NeighbourhoodRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8571034d60397816, []int{2}
+}
+
+func (m *NeighbourhoodRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_NeighbourhoodRequest.Unmarshal(m, b)
+}
+func (m *NeighbourhoodRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_NeighbourhoodRequest.Marshal(b, m, deterministic)
+}
+func (m *NeighbourhoodRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_NeighbourhoodRequest.Merge(m, src)
+}
+func (m *NeighbourhoodRequest) XXX_Size() int {
+	return xxx_messageInfo_NeighbourhoodRequest.Size(m)
+}
+func (m *NeighbourhoodRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_NeighbourhoodRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_NeighbourhoodRequest proto.InternalMessageInfo
+
+func (m *NeighbourhoodRequest) GetId() string {
+	if m != nil {
+		return m.Id
+	}
+	return ""
+}
+
+// NeighbourhoodResponse contains node neighbourhood hierarchy
+type NeighbourhoodResponse struct {
+	Neighbourhood        *Neighbour `protobuf:"bytes,1,opt,name=neighbourhood,proto3" json:"neighbourhood,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
+	XXX_unrecognized     []byte     `json:"-"`
+	XXX_sizecache        int32      `json:"-"`
+}
+
+func (m *NeighbourhoodResponse) Reset()         { *m = NeighbourhoodResponse{} }
+func (m *NeighbourhoodResponse) String() string { return proto.CompactTextString(m) }
+func (*NeighbourhoodResponse) ProtoMessage()    {}
+func (*NeighbourhoodResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8571034d60397816, []int{3}
+}
+
+func (m *NeighbourhoodResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_NeighbourhoodResponse.Unmarshal(m, b)
+}
+func (m *NeighbourhoodResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_NeighbourhoodResponse.Marshal(b, m, deterministic)
+}
+func (m *NeighbourhoodResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_NeighbourhoodResponse.Merge(m, src)
+}
+func (m *NeighbourhoodResponse) XXX_Size() int {
+	return xxx_messageInfo_NeighbourhoodResponse.Size(m)
+}
+func (m *NeighbourhoodResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_NeighbourhoodResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_NeighbourhoodResponse proto.InternalMessageInfo
+
+func (m *NeighbourhoodResponse) GetNeighbourhood() *Neighbour {
+	if m != nil {
+		return m.Neighbourhood
+	}
+	return nil
+}
+
+// Node is network node
+type Node struct {
+	// node ide
+	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	// node address
+	Address              string   `protobuf:"bytes,2,opt,name=address,proto3" json:"address,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Node) Reset()         { *m = Node{} }
+func (m *Node) String() string { return proto.CompactTextString(m) }
+func (*Node) ProtoMessage()    {}
+func (*Node) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8571034d60397816, []int{4}
+}
+
+func (m *Node) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Node.Unmarshal(m, b)
+}
+func (m *Node) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Node.Marshal(b, m, deterministic)
+}
+func (m *Node) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Node.Merge(m, src)
+}
+func (m *Node) XXX_Size() int {
+	return xxx_messageInfo_Node.Size(m)
+}
+func (m *Node) XXX_DiscardUnknown() {
+	xxx_messageInfo_Node.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Node proto.InternalMessageInfo
+
+func (m *Node) GetId() string {
+	if m != nil {
+		return m.Id
+	}
+	return ""
+}
+
+func (m *Node) GetAddress() string {
+	if m != nil {
+		return m.Address
+	}
+	return ""
+}
+
+// Connect is sent when the node connects to the network
+type Connect struct {
+	// network mode
+	Node                 *Node    `protobuf:"bytes,1,opt,name=node,proto3" json:"node,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Connect) Reset()         { *m = Connect{} }
+func (m *Connect) String() string { return proto.CompactTextString(m) }
+func (*Connect) ProtoMessage()    {}
+func (*Connect) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8571034d60397816, []int{5}
+}
+
+func (m *Connect) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Connect.Unmarshal(m, b)
+}
+func (m *Connect) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Connect.Marshal(b, m, deterministic)
+}
+func (m *Connect) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Connect.Merge(m, src)
+}
+func (m *Connect) XXX_Size() int {
+	return xxx_messageInfo_Connect.Size(m)
+}
+func (m *Connect) XXX_DiscardUnknown() {
+	xxx_messageInfo_Connect.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Connect proto.InternalMessageInfo
+
+func (m *Connect) GetNode() *Node {
+	if m != nil {
+		return m.Node
+	}
+	return nil
+}
+
+// Close is sent when the node disconnects from the network
+type Close struct {
+	// network node
+	Node                 *Node    `protobuf:"bytes,1,opt,name=node,proto3" json:"node,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Close) Reset()         { *m = Close{} }
+func (m *Close) String() string { return proto.CompactTextString(m) }
+func (*Close) ProtoMessage()    {}
+func (*Close) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8571034d60397816, []int{6}
+}
+
+func (m *Close) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Close.Unmarshal(m, b)
+}
+func (m *Close) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Close.Marshal(b, m, deterministic)
+}
+func (m *Close) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Close.Merge(m, src)
+}
+func (m *Close) XXX_Size() int {
+	return xxx_messageInfo_Close.Size(m)
+}
+func (m *Close) XXX_DiscardUnknown() {
+	xxx_messageInfo_Close.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Close proto.InternalMessageInfo
+
+func (m *Close) GetNode() *Node {
+	if m != nil {
+		return m.Node
+	}
+	return nil
+}
+
+// Solicit is sent when requesting route advertisement from the network nodes
+type Solicit struct {
+	// network node
+	Node                 *Node    `protobuf:"bytes,1,opt,name=node,proto3" json:"node,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Solicit) Reset()         { *m = Solicit{} }
+func (m *Solicit) String() string { return proto.CompactTextString(m) }
+func (*Solicit) ProtoMessage()    {}
+func (*Solicit) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8571034d60397816, []int{7}
+}
+
+func (m *Solicit) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Solicit.Unmarshal(m, b)
+}
+func (m *Solicit) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Solicit.Marshal(b, m, deterministic)
+}
+func (m *Solicit) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Solicit.Merge(m, src)
+}
+func (m *Solicit) XXX_Size() int {
+	return xxx_messageInfo_Solicit.Size(m)
+}
+func (m *Solicit) XXX_DiscardUnknown() {
+	xxx_messageInfo_Solicit.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Solicit proto.InternalMessageInfo
+
+func (m *Solicit) GetNode() *Node {
+	if m != nil {
+		return m.Node
+	}
+	return nil
+}
+
+// Neighbour is used to nnounce node neighbourhood
+type Neighbour struct {
+	// network node
+	Node *Node `protobuf:"bytes,1,opt,name=node,proto3" json:"node,omitempty"`
+	// neighbours
+	Neighbours           []*Node  `protobuf:"bytes,3,rep,name=neighbours,proto3" json:"neighbours,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Neighbour) Reset()         { *m = Neighbour{} }
+func (m *Neighbour) String() string { return proto.CompactTextString(m) }
+func (*Neighbour) ProtoMessage()    {}
+func (*Neighbour) Descriptor() ([]byte, []int) {
+	return fileDescriptor_8571034d60397816, []int{8}
+}
+
+func (m *Neighbour) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Neighbour.Unmarshal(m, b)
+}
+func (m *Neighbour) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Neighbour.Marshal(b, m, deterministic)
+}
+func (m *Neighbour) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Neighbour.Merge(m, src)
+}
+func (m *Neighbour) XXX_Size() int {
+	return xxx_messageInfo_Neighbour.Size(m)
+}
+func (m *Neighbour) XXX_DiscardUnknown() {
+	xxx_messageInfo_Neighbour.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Neighbour proto.InternalMessageInfo
+
+func (m *Neighbour) GetNode() *Node {
+	if m != nil {
+		return m.Node
+	}
+	return nil
+}
+
+func (m *Neighbour) GetNeighbours() []*Node {
+	if m != nil {
+		return m.Neighbours
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*ListRequest)(nil), "go.micro.network.ListRequest")
+	proto.RegisterType((*ListResponse)(nil), "go.micro.network.ListResponse")
+	proto.RegisterType((*NeighbourhoodRequest)(nil), "go.micro.network.NeighbourhoodRequest")
+	proto.RegisterType((*NeighbourhoodResponse)(nil), "go.micro.network.NeighbourhoodResponse")
+	proto.RegisterType((*Node)(nil), "go.micro.network.Node")
+	proto.RegisterType((*Connect)(nil), "go.micro.network.Connect")
+	proto.RegisterType((*Close)(nil), "go.micro.network.Close")
+	proto.RegisterType((*Solicit)(nil), "go.micro.network.Solicit")
+	proto.RegisterType((*Neighbour)(nil), "go.micro.network.Neighbour")
+}
+
+func init() { proto.RegisterFile("network.proto", fileDescriptor_8571034d60397816) }
+
+var fileDescriptor_8571034d60397816 = []byte{
+	// 360 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x53, 0x41, 0x4f, 0xf2, 0x40,
+	0x10, 0xfd, 0x28, 0xf0, 0x35, 0x0c, 0x1f, 0x5f, 0xcc, 0x46, 0x4d, 0x53, 0x83, 0x21, 0x7b, 0x40,
+	0x62, 0xb4, 0x18, 0x08, 0x9e, 0xbc, 0x18, 0x0e, 0x5e, 0x08, 0x87, 0x7a, 0xf3, 0x66, 0xbb, 0x9b,
+	0xb2, 0x11, 0x3a, 0xb8, 0xbb, 0x8d, 0x7f, 0xc0, 0x1f, 0x6e, 0xba, 0x5d, 0xb0, 0x80, 0x60, 0xb8,
+	0x75, 0xe6, 0xbd, 0x37, 0x6f, 0xa7, 0xfb, 0x16, 0x5a, 0x29, 0xd7, 0x1f, 0x28, 0xdf, 0x82, 0xa5,
+	0x44, 0x8d, 0xe4, 0x24, 0xc1, 0x60, 0x21, 0x62, 0x89, 0x81, 0xed, 0xfb, 0xc3, 0x44, 0xe8, 0x59,
+	0x16, 0x05, 0x31, 0x2e, 0xfa, 0x06, 0xe9, 0x27, 0x78, 0x5b, 0x7c, 0x48, 0xcc, 0x34, 0x97, 0x7d,
+	0xa3, 0xb4, 0x45, 0x31, 0x86, 0xb6, 0xa0, 0x39, 0x11, 0x4a, 0x87, 0xfc, 0x3d, 0xe3, 0x4a, 0xd3,
+	0x07, 0xf8, 0x57, 0x94, 0x6a, 0x89, 0xa9, 0xe2, 0xe4, 0x06, 0xea, 0x29, 0x32, 0xae, 0xbc, 0x4a,
+	0xa7, 0xda, 0x6b, 0x0e, 0xce, 0x83, 0x6d, 0xd7, 0x60, 0x8a, 0x8c, 0x87, 0x05, 0x89, 0x76, 0xe1,
+	0x74, 0xca, 0x45, 0x32, 0x8b, 0x30, 0x93, 0x33, 0x44, 0x66, 0xa7, 0x92, 0xff, 0xe0, 0x08, 0xe6,
+	0x55, 0x3a, 0x95, 0x5e, 0x23, 0x74, 0x04, 0xa3, 0x2f, 0x70, 0xb6, 0xc5, 0xb3, 0x76, 0x8f, 0xf9,
+	0x96, 0x25, 0xc0, 0x68, 0x9a, 0x83, 0x8b, 0x1f, 0x6c, 0x57, 0xb4, 0x70, 0x53, 0x41, 0xef, 0xa0,
+	0x96, 0x1f, 0x69, 0xdb, 0x93, 0x78, 0xe0, 0xbe, 0x32, 0x26, 0xb9, 0x52, 0x9e, 0x63, 0x9a, 0xab,
+	0x92, 0x8e, 0xc0, 0x1d, 0x63, 0x9a, 0xf2, 0x58, 0x93, 0x6b, 0xa8, 0xe5, 0x9b, 0x58, 0xdb, 0x7d,
+	0xdb, 0x1a, 0x0e, 0x1d, 0x42, 0x7d, 0x3c, 0x47, 0xc5, 0x8f, 0x12, 0x8d, 0xc0, 0x7d, 0xc6, 0xb9,
+	0x88, 0xc5, 0x71, 0x5e, 0x08, 0x8d, 0xf5, 0xc2, 0xc7, 0x08, 0xc9, 0x3d, 0xc0, 0xfa, 0xf7, 0x28,
+	0xaf, 0x7a, 0xf0, 0x12, 0x4b, 0xcc, 0xc1, 0xa7, 0x03, 0xee, 0xb4, 0x00, 0xc9, 0x13, 0x80, 0xc9,
+	0x44, 0x1e, 0x1b, 0x45, 0xbc, 0x6f, 0xb5, 0x0d, 0x92, 0xbd, 0x65, 0xbf, 0xbd, 0x83, 0x94, 0xa3,
+	0x44, 0xff, 0x90, 0x09, 0x34, 0xf2, 0x4e, 0x6e, 0xa6, 0x48, 0x7b, 0xf7, 0x14, 0xa5, 0x20, 0xfa,
+	0x97, 0xfb, 0xe0, 0xf5, 0xb4, 0x08, 0x5a, 0x1b, 0x21, 0x22, 0xdd, 0x03, 0x29, 0x29, 0xa5, 0xd1,
+	0xbf, 0xfa, 0x95, 0xb7, 0xf2, 0x88, 0xfe, 0x9a, 0x47, 0x32, 0xfc, 0x0a, 0x00, 0x00, 0xff, 0xff,
+	0x59, 0xcf, 0xab, 0xb5, 0x7c, 0x03, 0x00, 0x00,
+}

network/proto/network.proto

@@ -0,0 +1,64 @@
+syntax = "proto3";
+
+package go.micro.network;
+
+import "github.com/micro/go-micro/router/proto/router.proto";
+
+// Network service is usesd to gain visibility into networks
+service Network {
+        rpc ListRoutes(go.micro.router.Request) returns (go.micro.router.ListResponse) {};
+        rpc ListNodes(ListRequest) returns (ListResponse) {};
+        rpc Neighbourhood(NeighbourhoodRequest) returns (NeighbourhoodResponse) {};
+}
+
+// Empty request
+message ListRequest {}
+
+// ListResponse is returned by ListNodes and ListNeighbours
+message ListResponse {
+	repeated Node nodes = 1;
+}
+
+// NeighbourhoodRequest is sent to query node neighbourhood
+message NeighbourhoodRequest {
+        string id = 1;
+}
+
+// NeighbourhoodResponse contains node neighbourhood hierarchy
+message NeighbourhoodResponse {
+        Neighbour neighbourhood = 1;
+}
+
+// Node is network node
+message Node {
+        // node ide
+        string id = 1;
+        // node address
+        string address = 2;
+}
+
+// Connect is sent when the node connects to the network
+message Connect {
+        // network mode
+        Node node = 1;
+}
+
+// Close is sent when the node disconnects from the network
+message Close {
+        // network node
+        Node node = 1;
+}
+
+// Solicit is sent when requesting route advertisement from the network nodes
+message Solicit {
+        // network node
+        Node node = 1;
+}
+
+// Neighbour is used to nnounce node neighbourhood
+message Neighbour {
+        // network node
+        Node node = 1;
+        // neighbours
+        repeated Node neighbours = 3;
+}

network/resolver/dns/dns.go

@@ -8,6 +8,7 @@ import (
 	"github.com/micro/go-micro/network/resolver"
 )
 
+// Resolver is a DNS network resolve
 type Resolver struct{}
 
 // Resolve assumes ID is a domain name e.g micro.mu

network/resolver/http/http.go

@@ -10,6 +10,7 @@ import (
 	"github.com/micro/go-micro/network/resolver"
 )
 
+// Resolver is a HTTP network resolver
 type Resolver struct {
 	// If not set, defaults to http
 	Proto string

network/resolver/registry/registry.go

@@ -6,6 +6,7 @@ import (
 	"github.com/micro/go-micro/registry"
 )
 
+// Resolver is a registry network resolver
 type Resolver struct {
 	// Registry is the registry to use otherwise we use the defaul
 	Registry registry.Registry

network/resolver/resolver.go

@@ -5,7 +5,7 @@ package resolver
 // via the name to connect to. This is done based on Network.Name().
 // Before we can be part of any network, we have to connect to it.
 type Resolver interface {
-	// Resolve returns a list of addresses for an name
+	// Resolve returns a list of addresses for a name
 	Resolve(name string) ([]*Record, error)
 }
 

network/resolver/static/static.go

@@ -0,0 +1,33 @@
+// Package static is a static resolver
+package registry
+
+import (
+	"github.com/micro/go-micro/network/resolver"
+)
+
+// Resolver returns a static list of nodes. In the event the node list
+// is not present it will return the name of the network passed in.
+type Resolver struct {
+	// A static list of nodes
+	Nodes []string
+}
+
+// Resolve returns the list of nodes
+func (r *Resolver) Resolve(name string) ([]*resolver.Record, error) {
+	// if there are no nodes just return the name
+	if len(r.Nodes) == 0 {
+		return []*resolver.Record{
+			{Address: name},
+		}, nil
+	}
+
+	var records []*resolver.Record
+
+	for _, node := range r.Nodes {
+		records = append(records, &resolver.Record{
+			Address: node,
+		})
+	}
+
+	return records, nil
+}

network/tunnel/default.go

@@ -1,337 +0,0 @@
-package tunnel
-
-import (
-	"crypto/sha256"
-	"errors"
-	"fmt"
-	"sync"
-
-	"github.com/google/uuid"
-	"github.com/micro/go-micro/network/link"
-	"github.com/micro/go-micro/transport"
-)
-
-// tun represents a network tunnel
-type tun struct {
-	// the link on top of which we build a tunnel
-	link link.Link
-
-	sync.RWMutex
-
-	// to indicate if we're connected or not
-	connected bool
-
-	// the send channel for all messages
-	send chan *message
-
-	// close channel
-	closed chan bool
-
-	// a map of sockets based on Micro-Tunnel-Id
-	sockets map[string]*socket
-}
-
-// create new tunnel on top of a link
-func newTunnel(link link.Link) *tun {
-	return &tun{
-		link:    link,
-		send:    make(chan *message, 128),
-		closed:  make(chan bool),
-		sockets: make(map[string]*socket),
-	}
-}
-
-// getSocket returns a socket from the internal socket map.
-// It does this based on the Micro-Tunnel-Id and Micro-Tunnel-Session
-func (t *tun) getSocket(id, session string) (*socket, bool) {
-	// get the socket
-	t.RLock()
-	s, ok := t.sockets[id+session]
-	t.RUnlock()
-	return s, ok
-}
-
-// newSocket creates a new socket and saves it
-func (t *tun) newSocket(id, session string) (*socket, bool) {
-	// hash the id
-	h := sha256.New()
-	h.Write([]byte(id))
-	id = fmt.Sprintf("%x", h.Sum(nil))
-
-	// new socket
-	s := &socket{
-		id:      id,
-		session: session,
-		closed:  make(chan bool),
-		recv:    make(chan *message, 128),
-		send:    t.send,
-		wait:    make(chan bool),
-	}
-
-	// save socket
-	t.Lock()
-	_, ok := t.sockets[id+session]
-	if ok {
-		// socket already exists
-		t.Unlock()
-		return nil, false
-	}
-	t.sockets[id+session] = s
-	t.Unlock()
-
-	// return socket
-	return s, true
-}
-
-// TODO: use tunnel id as part of the session
-func (t *tun) newSession() string {
-	return uuid.New().String()
-}
-
-// process outgoing messages sent by all local sockets
-func (t *tun) process() {
-	// manage the send buffer
-	// all pseudo sockets throw everything down this
-	for {
-		select {
-		case msg := <-t.send:
-			nmsg := &transport.Message{
-				Header: msg.data.Header,
-				Body:   msg.data.Body,
-			}
-
-			// set the tunnel id on the outgoing message
-			nmsg.Header["Micro-Tunnel-Id"] = msg.id
-
-			// set the session id
-			nmsg.Header["Micro-Tunnel-Session"] = msg.session
-
-			// send the message via the interface
-			if err := t.link.Send(nmsg); err != nil {
-				// no op
-				// TODO: do something
-			}
-		case <-t.closed:
-			return
-		}
-	}
-}
-
-// process incoming messages
-func (t *tun) listen() {
-	for {
-		// process anything via the net interface
-		msg := new(transport.Message)
-		err := t.link.Recv(msg)
-		if err != nil {
-			return
-		}
-
-		// first check Micro-Tunnel
-		switch msg.Header["Micro-Tunnel"] {
-		case "connect":
-			// assuming new connection
-			// TODO: do something with this
-			continue
-		case "close":
-			// assuming connection closed
-			// TODO: do something with this
-			continue
-		}
-
-		// the tunnel id
-		id := msg.Header["Micro-Tunnel-Id"]
-
-		// the session id
-		session := msg.Header["Micro-Tunnel-Session"]
-
-		// if the session id is blank there's nothing we can do
-		// TODO: check this is the case, is there any reason
-		// why we'd have a blank session? Is the tunnel
-		// used for some other purpose?
-		if len(id) == 0 || len(session) == 0 {
-			continue
-		}
-
-		// get the socket based on the tunnel id and session
-		// this could be something we dialed in which case
-		// we have a session for it otherwise its a listener
-		s, exists := t.getSocket(id, session)
-		if !exists {
-			// try get it based on just the tunnel id
-			// the assumption here is that a listener
-			// has no session but its set a listener session
-			s, exists = t.getSocket(id, "listener")
-			if !exists {
-				// drop it, we don't care about
-				// messages we don't know about
-				continue
-			}
-		}
-
-		// is the socket closed?
-		select {
-		case <-s.closed:
-			// closed
-			delete(t.sockets, id)
-			continue
-		default:
-			// process
-		}
-
-		// is the socket new?
-		select {
-		// if its new the socket is actually blocked waiting
-		// for a connection. so we check if its waiting.
-		case <-s.wait:
-		// if its waiting e.g its new then we close it
-		default:
-			// set remote address of the socket
-			s.remote = msg.Header["Remote"]
-			close(s.wait)
-		}
-
-		// construct a new transport message
-		tmsg := &transport.Message{
-			Header: msg.Header,
-			Body:   msg.Body,
-		}
-
-		// construct the internal message
-		imsg := &message{
-			id:      id,
-			session: session,
-			data:    tmsg,
-		}
-
-		// append to recv backlog
-		// we don't block if we can't pass it on
-		select {
-		case s.recv <- imsg:
-		default:
-		}
-	}
-}
-
-func (t *tun) connect() error {
-	return t.link.Send(&transport.Message{
-		Header: map[string]string{
-			"Micro-Tunnel": "connect",
-		},
-	})
-}
-
-func (t *tun) close() error {
-	return t.link.Send(&transport.Message{
-		Header: map[string]string{
-			"Micro-Tunnel": "close",
-		},
-	})
-}
-
-// Close the tunnel
-func (t *tun) Close() error {
-	t.Lock()
-	defer t.Unlock()
-
-	if !t.connected {
-		return nil
-	}
-
-	select {
-	case <-t.closed:
-		return nil
-	default:
-		// close all the sockets
-		for _, s := range t.sockets {
-			s.Close()
-		}
-		// close the connection
-		close(t.closed)
-		t.connected = false
-
-		// send a close message
-		// we don't close the link
-		// just the tunnel
-		return t.close()
-	}
-
-	return nil
-}
-
-// Connect the tunnel
-func (t *tun) Connect() error {
-	t.Lock()
-	defer t.Unlock()
-
-	// already connected
-	if t.connected {
-		return nil
-	}
-
-	// send the connect message
-	if err := t.connect(); err != nil {
-		return err
-	}
-
-	// set as connected
-	t.connected = true
-	// create new close channel
-	t.closed = make(chan bool)
-
-	// process messages to be sent
-	go t.process()
-	// process incoming messages
-	go t.listen()
-
-	return nil
-}
-
-// Dial an address
-func (t *tun) Dial(addr string) (Conn, error) {
-	c, ok := t.newSocket(addr, t.newSession())
-	if !ok {
-		return nil, errors.New("error dialing " + addr)
-	}
-	// set remote
-	c.remote = addr
-	// set local
-	c.local = t.link.Local()
-
-	return c, nil
-}
-
-// Accept a connection on the address
-func (t *tun) Listen(addr string) (Listener, error) {
-	// create a new socket by hashing the address
-	c, ok := t.newSocket(addr, "listener")
-	if !ok {
-		return nil, errors.New("already listening on " + addr)
-	}
-
-	// set remote. it will be replaced by the first message received
-	c.remote = t.link.Remote()
-	// set local
-	c.local = addr
-
-	tl := &tunListener{
-		addr: addr,
-		// the accept channel
-		accept: make(chan *socket, 128),
-		// the channel to close
-		closed: make(chan bool),
-		// the connection
-		conn: c,
-		// the listener socket
-		socket: c,
-	}
-
-	// this kicks off the internal message processor
-	// for the listener so it can create pseudo sockets
-	// per session if they do not exist or pass messages
-	// to the existign sessions
-	go tl.process()
-
-	// return the listener
-	return tl, nil
-}

network/tunnel/listener.go

@@ -1,101 +0,0 @@
-package tunnel
-
-import (
-	"io"
-)
-
-type tunListener struct {
-	// address of the listener
-	addr string
-	// the accept channel
-	accept chan *socket
-	// the channel to close
-	closed chan bool
-	// the connection
-	conn Conn
-	// the listener socket
-	socket *socket
-}
-
-func (t *tunListener) process() {
-	// our connection map for session
-	conns := make(map[string]*socket)
-
-	for {
-		select {
-		case <-t.closed:
-			return
-		// receive a new message
-		case m := <-t.socket.recv:
-			// get a socket
-			sock, ok := conns[m.session]
-			if !ok {
-				// create a new socket session
-				sock = &socket{
-					// our tunnel id
-					id: m.id,
-					// the session id
-					session: m.session,
-					// close chan
-					closed: make(chan bool),
-					// recv called by the acceptor
-					recv: make(chan *message, 128),
-					// use the internal send buffer
-					send: t.socket.send,
-					// wait
-					wait: make(chan bool),
-				}
-
-				// first message
-				sock.recv <- m
-
-				// save the socket
-				conns[m.session] = sock
-
-				// send to accept chan
-				select {
-				case <-t.closed:
-					return
-				case t.accept <- sock:
-				}
-			}
-
-			// send this to the accept chan
-			select {
-			case <-sock.closed:
-				delete(conns, m.session)
-			case sock.recv <- m:
-			}
-		}
-	}
-}
-
-func (t *tunListener) Addr() string {
-	return t.addr
-}
-
-func (t *tunListener) Close() error {
-	select {
-	case <-t.closed:
-		return nil
-	default:
-		close(t.closed)
-	}
-	return nil
-}
-
-// Everytime accept is called we essentially block till we get a new connection
-func (t *tunListener) Accept() (Conn, error) {
-	select {
-	// if the socket is closed return
-	case <-t.closed:
-		return nil, io.EOF
-	// wait for a new connection
-	case c, ok := <-t.accept:
-		if !ok {
-			return nil, io.EOF
-		}
-		return c, nil
-	}
-	return nil, nil
-}

network/tunnel/socket.go

@@ -1,90 +0,0 @@
-package tunnel
-
-import (
-	"errors"
-
-	"github.com/micro/go-micro/transport"
-)
-
-// socket is our pseudo socket for transport.Socket
-type socket struct {
-	// socket id based on Micro-Tunnel
-	id string
-	// the session id based on Micro.Tunnel-Session
-	session string
-	// closed
-	closed chan bool
-	// remote addr
-	remote string
-	// local addr
-	local string
-	// send chan
-	send chan *message
-	// recv chan
-	recv chan *message
-	// wait until we have a connection
-	wait chan bool
-}
-
-// message is sent over the send channel
-type message struct {
-	// tunnel id
-	id string
-	// the session id
-	session string
-	// transport data
-	data *transport.Message
-}
-
-func (s *socket) Remote() string {
-	return s.remote
-}
-
-func (s *socket) Local() string {
-	return s.local
-}
-
-func (s *socket) Id() string {
-	return s.id
-}
-
-func (s *socket) Session() string {
-	return s.session
-}
-
-func (s *socket) Send(m *transport.Message) error {
-	select {
-	case <-s.closed:
-		return errors.New("socket is closed")
-	default:
-		// no op
-	}
-	// append to backlog
-	s.send <- &message{id: s.id, session: s.session, data: m}
-	return nil
-}
-
-func (s *socket) Recv(m *transport.Message) error {
-	select {
-	case <-s.closed:
-		return errors.New("socket is closed")
-	default:
-		// no op
-	}
-	// recv from backlog
-	msg := <-s.recv
-	// set message
-	*m = *msg.data
-	// return nil
-	return nil
-}
-
-func (s *socket) Close() error {
-	select {
-	case <-s.closed:
-		// no op
-	default:
-		close(s.closed)
-	}
-	return nil
-}

network/tunnel/tunnel.go

@@ -1,44 +0,0 @@
-// Package tunnel provides gre network tunnelling
-package tunnel
-
-import (
-	"github.com/micro/go-micro/network/link"
-	"github.com/micro/go-micro/transport"
-)
-
-// Tunnel creates a gre network tunnel on top of a link.
-// It establishes multiple streams using the Micro-Tunnel-Id header
-// and Micro-Tunnel-Session header. The tunnel id is a hash of
-// the address being requested.
-type Tunnel interface {
-	// Connect connects the tunnel
-	Connect() error
-	// Close closes the tunnel
-	Close() error
-	// Dial an endpoint
-	Dial(addr string) (Conn, error)
-	// Accept connections
-	Listen(addr string) (Listener, error)
-}
-
-// The listener provides similar constructs to the transport.Listener
-type Listener interface {
-	Addr() string
-	Close() error
-	Accept() (Conn, error)
-}
-
-// Conn is a connection dialed or accepted which includes the tunnel id and session
-type Conn interface {
-	// Specifies the tunnel id
-	Id() string
-	// The session
-	Session() string
-	// a transport socket
-	transport.Socket
-}
-
-// NewTunnel creates a new tunnel on top of a link
-func NewTunnel(l link.Link) Tunnel {
-	return newTunnel(l)
-}

network/tunnel/tunnel_test.go

@@ -1,113 +0,0 @@
-package tunnel
-
-import (
-	"testing"
-
-	"github.com/micro/go-micro/network/link"
-	"github.com/micro/go-micro/transport"
-)
-
-// testAccept will accept connections on the transport, create a new link and tunnel on top
-func testAccept(t *testing.T, l transport.Listener, wait chan bool) error {
-	// accept new connections on the transport
-	// establish a link and tunnel
-	return l.Accept(func(s transport.Socket) {
-		// convert the socket into a link
-		li := link.NewLink(
-			link.Socket(s),
-		)
-
-		// connect the link e.g start internal buffers
-		if err := li.Connect(); err != nil {
-			t.Fatal(err)
-		}
-
-		// create a new tunnel
-		tun := NewTunnel(li)
-
-		// connect the tunnel
-		if err := tun.Connect(); err != nil {
-			t.Fatal(err)
-		}
-
-		// listen on some virtual address
-		tl, err := tun.Listen("test-tunnel")
-		if err != nil {
-			t.Fatal(err)
-			return
-		}
-
-		// accept a connection
-		c, err := tl.Accept()
-		if err != nil {
-			t.Fatal(err)
-		}
-
-		// get a message
-		for {
-			m := new(transport.Message)
-			if err := c.Recv(m); err != nil {
-				t.Fatal(err)
-			}
-			close(wait)
-			return
-		}
-	})
-}
-
-// testSend will create a new link to an address and then a tunnel on top
-func testSend(t *testing.T, addr string) {
-	// create a new link
-	l := link.NewLink(
-		link.Address(addr),
-	)
-
-	// connect the link, this includes dialing
-	if err := l.Connect(); err != nil {
-		t.Fatal(err)
-	}
-
-	// create a tunnel on the link
-	tun := NewTunnel(l)
-
-	// connect the tunnel with the remote side
-	if err := tun.Connect(); err != nil {
-		t.Fatal(err)
-	}
-
-	// dial a new session
-	c, err := tun.Dial("test-tunnel")
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	m := transport.Message{
-		Header: map[string]string{
-			"test": "header",
-		},
-	}
-	if err := c.Send(&m); err != nil {
-		t.Fatal(err)
-	}
-}
-
-func TestTunnel(t *testing.T) {
-	// create a new listener
-	tr := transport.NewTransport()
-	l, err := tr.Listen(":0")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer l.Close()
-
-	wait := make(chan bool)
-
-	// start accepting connections
-	go testAccept(t, l, wait)
-
-	// send a message
-	testSend(t, l.Addr())
-
-	// wait until message is received
-	<-wait
-}

plugin/default.go

@@ -0,0 +1,125 @@
+// Package plugin provides the ability to load plugins
+package plugin
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	pg "plugin"
+	"strings"
+	"text/template"
+
+	"github.com/micro/go-micro/broker"
+	"github.com/micro/go-micro/client"
+	"github.com/micro/go-micro/client/selector"
+	"github.com/micro/go-micro/config/cmd"
+	"github.com/micro/go-micro/registry"
+	"github.com/micro/go-micro/server"
+	"github.com/micro/go-micro/transport"
+)
+
+type plugin struct{}
+
+// Init sets up the plugin
+func (p *plugin) Init(c *Config) error {
+	switch c.Type {
+	case "broker":
+		pg, ok := c.NewFunc.(func(...broker.Option) broker.Broker)
+		if !ok {
+			return fmt.Errorf("Invalid plugin %s", c.Name)
+		}
+		cmd.DefaultBrokers[c.Name] = pg
+	case "client":
+		pg, ok := c.NewFunc.(func(...client.Option) client.Client)
+		if !ok {
+			return fmt.Errorf("Invalid plugin %s", c.Name)
+		}
+		cmd.DefaultClients[c.Name] = pg
+	case "registry":
+		pg, ok := c.NewFunc.(func(...registry.Option) registry.Registry)
+		if !ok {
+			return fmt.Errorf("Invalid plugin %s", c.Name)
+		}
+		cmd.DefaultRegistries[c.Name] = pg
+
+	case "selector":
+		pg, ok := c.NewFunc.(func(...selector.Option) selector.Selector)
+		if !ok {
+			return fmt.Errorf("Invalid plugin %s", c.Name)
+		}
+		cmd.DefaultSelectors[c.Name] = pg
+	case "server":
+		pg, ok := c.NewFunc.(func(...server.Option) server.Server)
+		if !ok {
+			return fmt.Errorf("Invalid plugin %s", c.Name)
+		}
+		cmd.DefaultServers[c.Name] = pg
+	case "transport":
+		pg, ok := c.NewFunc.(func(...transport.Option) transport.Transport)
+		if !ok {
+			return fmt.Errorf("Invalid plugin %s", c.Name)
+		}
+		cmd.DefaultTransports[c.Name] = pg
+	default:
+		return fmt.Errorf("Unknown plugin type: %s for %s", c.Type, c.Name)
+	}
+
+	return nil
+}
+
+// Load loads a plugin created with `go build -buildmode=plugin`
+func (p *plugin) Load(path string) (*Config, error) {
+	plugin, err := pg.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	s, err := plugin.Lookup("Plugin")
+	if err != nil {
+		return nil, err
+	}
+	pl, ok := s.(*Config)
+	if !ok {
+		return nil, errors.New("could not cast Plugin object")
+	}
+	return pl, nil
+}
+
+// Generate creates a go file at the specified path.
+// You must use `go build -buildmode=plugin`to build it.
+func (p *plugin) Generate(path string, c *Config) error {
+	f, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	t, err := template.New(c.Name).Parse(tmpl)
+	if err != nil {
+		return err
+	}
+	return t.Execute(f, c)
+}
+
+// Build generates a dso plugin using the go command `go build -buildmode=plugin`
+func (p *plugin) Build(path string, c *Config) error {
+	path = strings.TrimSuffix(path, ".so")
+
+	// create go file in tmp path
+	temp := os.TempDir()
+	base := filepath.Base(path)
+	goFile := filepath.Join(temp, base+".go")
+
+	// generate .go file
+	if err := p.Generate(goFile, c); err != nil {
+		return err
+	}
+	// remove .go file
+	defer os.Remove(goFile)
+
+	if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil && !os.IsExist(err) {
+		return fmt.Errorf("Failed to create dir %s: %v", filepath.Dir(path), err)
+	}
+	cmd := exec.Command("go", "build", "-buildmode=plugin", "-o", path+".so", goFile)
+	return cmd.Run()
+}

plugin/plugin.go

@@ -0,0 +1,46 @@
+// Package plugin provides the ability to load plugins
+package plugin
+
+// Plugin is a plugin loaded from a file
+type Plugin interface {
+	// Initialise a plugin with the config
+	Init(c *Config) error
+	// Load loads a .so plugin at the given path
+	Load(path string) (*Config, error)
+	// Build a .so plugin with config at the path specified
+	Build(path string, c *Config) error
+}
+
+// Config is the plugin config
+type Config struct {
+	// Name of the plugin e.g rabbitmq
+	Name string
+	// Type of the plugin e.g broker
+	Type string
+	// Path specifies the import path
+	Path string
+	// NewFunc creates an instance of the plugin
+	NewFunc interface{}
+}
+
+var (
+	// Default plugin loader
+	DefaultPlugin = NewPlugin()
+)
+
+// NewPlugin creates a new plugin interface
+func NewPlugin() Plugin {
+	return &plugin{}
+}
+
+func Build(path string, c *Config) error {
+	return DefaultPlugin.Build(path, c)
+}
+
+func Load(path string) (*Config, error) {
+	return DefaultPlugin.Load(path)
+}
+
+func Init(c *Config) error {
+	return DefaultPlugin.Init(c)
+}

plugin/template.go

@@ -0,0 +1,20 @@
+package plugin
+
+var (
+	tmpl = `
+package main
+
+import (
+	"github.com/micro/go-micro/plugin"
+
+	"{{.Path}}"
+)
+
+var Plugin = plugin.Config{
+	Name: "{{.Name}}",
+	Type: "{{.Type}}",
+	Path: "{{.Path}}",
+	NewFunc: {{.Name}}.{{.NewFunc}},
+}
+`
+)

proxy/grpc/grpc.go

@@ -10,7 +10,8 @@ import (
 	"github.com/micro/go-micro/client/grpc"
 	"github.com/micro/go-micro/codec"
 	"github.com/micro/go-micro/config/options"
-	"github.com/micro/go-micro/network/proxy"
+	"github.com/micro/go-micro/errors"
+	"github.com/micro/go-micro/proxy"
 	"github.com/micro/go-micro/server"
 )
 
@@ -61,6 +62,10 @@ func readLoop(r server.Request, s client.Stream) error {
 	}
 }
 
+func (p *Proxy) SendRequest(ctx context.Context, req client.Request, rsp client.Response) error {
+	return errors.InternalServerError("go.micro.proxy.grpc", "SendRequest is unsupported")
+}
+
 // ServeRequest honours the server.Proxy interface
 func (p *Proxy) ServeRequest(ctx context.Context, req server.Request, rsp server.Response) error {
 	// set default client

proxy/http/http.go

@@ -10,9 +10,10 @@ import (
 	"net/url"
 	"path"
 
+	"github.com/micro/go-micro/client"
 	"github.com/micro/go-micro/config/options"
 	"github.com/micro/go-micro/errors"
-	"github.com/micro/go-micro/network/proxy"
+	"github.com/micro/go-micro/proxy"
 	"github.com/micro/go-micro/server"
 )
 
@@ -44,6 +45,10 @@ func getEndpoint(hdr map[string]string) string {
 	return ""
 }
 
+func (p *Proxy) SendRequest(ctx context.Context, req client.Request, rsp client.Response) error {
+	return errors.InternalServerError("go.micro.proxy.http", "SendRequest is unsupported")
+}
+
 // ServeRequest honours the server.Router interface
 func (p *Proxy) ServeRequest(ctx context.Context, req server.Request, rsp server.Response) error {
 	if p.Endpoint == "" {

proxy/mucp/mucp.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"sort"
 	"strings"
 	"sync"
 
@@ -12,8 +13,9 @@ import (
 	"github.com/micro/go-micro/codec"
 	"github.com/micro/go-micro/codec/bytes"
 	"github.com/micro/go-micro/config/options"
-	"github.com/micro/go-micro/network/proxy"
-	"github.com/micro/go-micro/network/router"
+	"github.com/micro/go-micro/errors"
+	"github.com/micro/go-micro/proxy"
+	"github.com/micro/go-micro/router"
 	"github.com/micro/go-micro/server"
 )
 
@@ -26,9 +28,12 @@ type Proxy struct {
 	// Endpoint specifies the fixed service endpoint to call.
 	Endpoint string
 
-	// The client to use for outbound requests
+	// The client to use for outbound requests in the local network
 	Client client.Client
 
+	// Links are used for outbound requests not in the local network
+	Links map[string]client.Client
+
 	// The router for routes
 	Router router.Router
 
@@ -76,7 +81,7 @@ func readLoop(r server.Request, s client.Stream) error {
 }
 
 // toNodes returns a list of node addresses from given routes
-func toNodes(routes map[uint64]router.Route) []string {
+func toNodes(routes []router.Route) []string {
 	var nodes []string
 	for _, node := range routes {
 		address := node.Address
@@ -88,37 +93,63 @@ func toNodes(routes map[uint64]router.Route) []string {
 	return nodes
 }
 
-func (p *Proxy) getRoute(service string) ([]string, error) {
+func (p *Proxy) getLink(r router.Route) (client.Client, error) {
+	if r.Link == "local" || len(p.Links) == 0 {
+		return p.Client, nil
+	}
+	l, ok := p.Links[r.Link]
+	if !ok {
+		return nil, errors.InternalServerError("go.micro.proxy", "link not found")
+	}
+	return l, nil
+}
+
+func (p *Proxy) getRoute(service string) ([]router.Route, error) {
+	toSlice := func(r map[uint64]router.Route) []router.Route {
+		var routes []router.Route
+		for _, v := range r {
+			routes = append(routes, v)
+		}
+
+		// sort the routes in order of metric
+		sort.Slice(routes, func(i, j int) bool { return routes[i].Metric < routes[j].Metric })
+
+		return routes
+	}
+
 	// lookup the route cache first
 	p.Lock()
 	routes, ok := p.Routes[service]
 	if ok {
 		p.Unlock()
-		return toNodes(routes), nil
+		return toSlice(routes), nil
 	}
-	p.Routes[service] = make(map[uint64]router.Route)
 	p.Unlock()
 
-	// if the router is broken return error
-	if status := p.Router.Status(); status.Code == router.Error {
-		return nil, status.Error
-	}
-
 	// lookup the routes in the router
 	results, err := p.Router.Lookup(router.NewQuery(router.QueryService(service)))
 	if err != nil {
+		// check the status of the router
+		if status := p.Router.Status(); status.Code == router.Error {
+			return nil, status.Error
+		}
+		// otherwise return the error
 		return nil, err
 	}
 
 	// update the proxy cache
 	p.Lock()
 	for _, route := range results {
+		// create if does not exist
+		if _, ok := p.Routes[service]; !ok {
+			p.Routes[service] = make(map[uint64]router.Route)
+		}
 		p.Routes[service][route.Hash()] = route
 	}
 	routes = p.Routes[service]
 	p.Unlock()
 
-	return toNodes(routes), nil
+	return toSlice(routes), nil
 }
 
 // manageRouteCache applies action on a given route to Proxy route cache
@@ -130,9 +161,6 @@ func (p *Proxy) manageRouteCache(route router.Route, action string) error {
 		}
 		p.Routes[route.Service][route.Hash()] = route
 	case "delete":
-		if _, ok := p.Routes[route.Service]; !ok {
-			return fmt.Errorf("route not found")
-		}
 		delete(p.Routes[route.Service], route.Hash())
 	default:
 		return fmt.Errorf("unknown action: %s", action)
@@ -171,12 +199,31 @@ func (p *Proxy) watchRoutes() {
 	}
 }
 
+func (p *Proxy) SendRequest(ctx context.Context, req client.Request, rsp client.Response) error {
+	return errors.InternalServerError("go.micro.proxy", "SendRequest is unsupported")
+}
+
 // ServeRequest honours the server.Router interface
 func (p *Proxy) ServeRequest(ctx context.Context, req server.Request, rsp server.Response) error {
-	// service name
-	service := req.Service()
-	endpoint := req.Endpoint()
+	// determine if its local routing
+	var local bool
+	// address to call
 	var addresses []string
+	// routes
+	var routes []router.Route
+	// service name to call
+	service := req.Service()
+	// endpoint to call
+	endpoint := req.Endpoint()
+
+	if len(service) == 0 {
+		return errors.BadRequest("go.micro.proxy", "service name is blank")
+	}
+
+	// are we network routing or local routing
+	if len(p.Links) == 0 {
+		local = true
+	}
 
 	// call a specific backend endpoint either by name or address
 	if len(p.Endpoint) > 0 {
@@ -190,7 +237,7 @@ func (p *Proxy) ServeRequest(ctx context.Context, req server.Request, rsp server
 				return err
 			}
 			// set the address
-			addresses = addr
+			routes = addr
 			// set the name
 			service = p.Endpoint
 		}
@@ -201,16 +248,66 @@ func (p *Proxy) ServeRequest(ctx context.Context, req server.Request, rsp server
 		if err != nil {
 			return err
 		}
-		addresses = addr
+		routes = addr
 	}
 
-	var opts []client.CallOption
-
-	// set address if available
+	// if the address is already set just serve it
+	// TODO: figure it out if we should know to pick a link
 	if len(addresses) > 0 {
-		opts = append(opts, client.WithAddress(addresses...))
+		// serve the normal way
+		return p.serveRequest(ctx, p.Client, service, endpoint, req, rsp, client.WithAddress(addresses...))
 	}
 
+	// there's no links e.g we're local routing then just serve it with addresses
+	if local {
+		var opts []client.CallOption
+
+		// set address if available via routes or specific endpoint
+		if len(routes) > 0 {
+			addresses := toNodes(routes)
+			opts = append(opts, client.WithAddress(addresses...))
+		}
+
+		// serve the normal way
+		return p.serveRequest(ctx, p.Client, service, endpoint, req, rsp, opts...)
+	}
+
+	var gerr error
+
+	// we're routing globally with multiple links
+	// so we need to pick a link per route
+	for _, route := range routes {
+		// pick the link or error out
+		link, err := p.getLink(route)
+		if err != nil {
+			// ok let's try again
+			gerr = err
+			continue
+		}
+
+		// set the address to call
+		addresses := toNodes([]router.Route{route})
+
+		// do the request with the link
+		gerr = p.serveRequest(ctx, link, service, endpoint, req, rsp, client.WithAddress(addresses...))
+		// return on no error since we succeeded
+		if gerr == nil {
+			return nil
+		}
+
+		// return where the context deadline was exceeded
+		if gerr == context.Canceled || gerr == context.DeadlineExceeded {
+			return err
+		}
+
+		// otherwise attempt to do it all over again
+	}
+
+	// if we got here something went really badly wrong
+	return gerr
+}
+
+func (p *Proxy) serveRequest(ctx context.Context, link client.Client, service, endpoint string, req server.Request, rsp server.Response, opts ...client.CallOption) error {
 	// read initial request
 	body, err := req.Read()
 	if err != nil {
@@ -218,16 +315,33 @@ func (p *Proxy) ServeRequest(ctx context.Context, req server.Request, rsp server
 	}
 
 	// create new request with raw bytes body
-	creq := p.Client.NewRequest(service, endpoint, &bytes.Frame{body}, client.WithContentType(req.ContentType()))
+	creq := link.NewRequest(service, endpoint, &bytes.Frame{body}, client.WithContentType(req.ContentType()))
+
+	// not a stream so make a client.Call request
+	if !req.Stream() {
+		crsp := new(bytes.Frame)
+
+		// make a call to the backend
+		if err := link.Call(ctx, creq, crsp, opts...); err != nil {
+			return err
+		}
+
+		// write the response
+		if err := rsp.Write(crsp.Data); err != nil {
+			return err
+		}
+
+		return nil
+	}
 
 	// create new stream
-	stream, err := p.Client.Stream(ctx, creq, opts...)
+	stream, err := link.Stream(ctx, creq, opts...)
 	if err != nil {
 		return err
 	}
 	defer stream.Close()
 
-	// create client request read loop
+	// create client request read loop if streaming
 	go readLoop(req, stream)
 
 	// get raw response
@@ -283,6 +397,7 @@ func NewSingleHostProxy(endpoint string) *Proxy {
 // NewProxy returns a new proxy which will route based on mucp headers
 func NewProxy(opts ...options.Option) proxy.Proxy {
 	p := new(Proxy)
+	p.Links = map[string]client.Client{}
 	p.Options = options.NewOptions(opts...)
 	p.Options.Init(options.WithString("mucp"))
 
@@ -303,6 +418,12 @@ func NewProxy(opts ...options.Option) proxy.Proxy {
 		p.Client = client.DefaultClient
 	}
 
+	// get client
+	links, ok := p.Options.Values().Get("proxy.links")
+	if ok {
+		p.Links = links.(map[string]client.Client)
+	}
+
 	// get router
 	r, ok := p.Options.Values().Get("proxy.router")
 	if ok {

proxy/proxy.go

@@ -6,13 +6,15 @@ import (
 
 	"github.com/micro/go-micro/client"
 	"github.com/micro/go-micro/config/options"
-	"github.com/micro/go-micro/network/router"
+	"github.com/micro/go-micro/router"
 	"github.com/micro/go-micro/server"
 )
 
 // Proxy can be used as a proxy server for go-micro services
 type Proxy interface {
 	options.Options
+	// SendRequest honours the client.Router interface
+	SendRequest(context.Context, client.Request, client.Response) error
 	// ServeRequest honours the server.Router interface
 	ServeRequest(context.Context, server.Request, server.Response) error
 }
@@ -35,3 +37,20 @@ func WithClient(c client.Client) options.Option {
 func WithRouter(r router.Router) options.Option {
 	return options.WithValue("proxy.router", r)
 }
+
+// WithLink sets a link for outbound requests
+func WithLink(name string, c client.Client) options.Option {
+	return func(o *options.Values) error {
+		var links map[string]client.Client
+		v, ok := o.Get("proxy.links")
+		if ok {
+			links = v.(map[string]client.Client)
+		} else {
+			links = map[string]client.Client{}
+		}
+		links[name] = c
+		// save the links
+		o.Set("proxy.links", links)
+		return nil
+	}
+}

registry/cache/rcache.go

@@ -325,18 +325,27 @@ func (c *cache) run(service string) {
 // watch loops the next event and calls update
 // it returns if there's an error
 func (c *cache) watch(w registry.Watcher) error {
-	defer w.Stop()
+	// used to stop the watch
+	stop := make(chan bool)
 
 	// manage this loop
 	go func() {
+		defer w.Stop()
+
+		select {
 		// wait for exit
-		<-c.exit
-		w.Stop()
+		case <-c.exit:
+			return
+		// we've been stopped
+		case <-stop:
+			return
+		}
 	}()
 
 	for {
 		res, err := w.Next()
 		if err != nil {
+			close(stop)
 			return err
 		}
 		c.update(res)

registry/consul/consul.go

@@ -13,14 +13,17 @@ import (
 
 	consul "github.com/hashicorp/consul/api"
 	"github.com/micro/go-micro/registry"
+	mnet "github.com/micro/go-micro/util/net"
 	hash "github.com/mitchellh/hashstructure"
 )
 
 type consulRegistry struct {
-	Address string
-	Client  *consul.Client
+	Address []string
 	opts    registry.Options
 
+	client *consul.Client
+	config *consul.Config
+
 	// connect enabled
 	connect bool
 
@@ -95,24 +98,33 @@ func configure(c *consulRegistry, opts ...registry.Option) {
 	}
 
 	// check if there are any addrs
-	if len(c.opts.Addrs) > 0 {
-		addr, port, err := net.SplitHostPort(c.opts.Addrs[0])
+	var addrs []string
+
+	// iterate the options addresses
+	for _, address := range c.opts.Addrs {
+		// check we have a port
+		addr, port, err := net.SplitHostPort(address)
 		if ae, ok := err.(*net.AddrError); ok && ae.Err == "missing port in address" {
 			port = "8500"
-			addr = c.opts.Addrs[0]
-			config.Address = fmt.Sprintf("%s:%s", addr, port)
+			addr = address
+			addrs = append(addrs, fmt.Sprintf("%s:%s", addr, port))
 		} else if err == nil {
-			config.Address = fmt.Sprintf("%s:%s", addr, port)
+			addrs = append(addrs, fmt.Sprintf("%s:%s", addr, port))
 		}
 	}
 
+	// set the addrs
+	if len(addrs) > 0 {
+		c.Address = addrs
+		config.Address = c.Address[0]
+	}
+
 	if config.HttpClient == nil {
 		config.HttpClient = new(http.Client)
 	}
 
 	// requires secure connection?
 	if c.opts.Secure || c.opts.TLSConfig != nil {
-
 		config.Scheme = "https"
 		// We're going to support InsecureSkipVerify
 		config.HttpClient.Transport = newTransport(c.opts.TLSConfig)
@@ -123,12 +135,14 @@ func configure(c *consulRegistry, opts ...registry.Option) {
 		config.HttpClient.Timeout = c.opts.Timeout
 	}
 
-	// create the client
-	client, _ := consul.NewClient(config)
+	// set the config
+	c.config = config
 
-	// set address/client
-	c.Address = config.Address
-	c.Client = client
+	// remove client
+	c.client = nil
+
+	// setup the client
+	c.Client()
 }
 
 func (c *consulRegistry) Init(opts ...registry.Option) error {
@@ -148,7 +162,7 @@ func (c *consulRegistry) Deregister(s *registry.Service) error {
 	c.Unlock()
 
 	node := s.Nodes[0]
-	return c.Client.Agent().ServiceDeregister(node.Id)
+	return c.Client().Agent().ServiceDeregister(node.Id)
 }
 
 func (c *consulRegistry) Register(s *registry.Service, opts ...registry.RegisterOption) error {
@@ -193,7 +207,7 @@ func (c *consulRegistry) Register(s *registry.Service, opts ...registry.Register
 			if time.Since(lastChecked) <= getDeregisterTTL(regInterval) {
 				return nil
 			}
-			services, _, err := c.Client.Health().Checks(s.Name, c.queryOptions)
+			services, _, err := c.Client().Health().Checks(s.Name, c.queryOptions)
 			if err == nil {
 				for _, v := range services {
 					if v.ServiceID == node.Id {
@@ -204,7 +218,7 @@ func (c *consulRegistry) Register(s *registry.Service, opts ...registry.Register
 		} else {
 			// if the err is nil we're all good, bail out
 			// if not, we don't know what the state is, so full re-register
-			if err := c.Client.Agent().PassTTL("service:"+node.Id, ""); err == nil {
+			if err := c.Client().Agent().PassTTL("service:"+node.Id, ""); err == nil {
 				return nil
 			}
 		}
@@ -237,6 +251,9 @@ func (c *consulRegistry) Register(s *registry.Service, opts ...registry.Register
 	}
 
 	host, pt, _ := net.SplitHostPort(node.Address)
+	if host == "" {
+		host = node.Address
+	}
 	port, _ := strconv.Atoi(pt)
 
 	// register the service
@@ -256,7 +273,7 @@ func (c *consulRegistry) Register(s *registry.Service, opts ...registry.Register
 		}
 	}
 
-	if err := c.Client.Agent().ServiceRegister(asr); err != nil {
+	if err := c.Client().Agent().ServiceRegister(asr); err != nil {
 		return err
 	}
 
@@ -272,7 +289,7 @@ func (c *consulRegistry) Register(s *registry.Service, opts ...registry.Register
 	}
 
 	// pass the healthcheck
-	return c.Client.Agent().PassTTL("service:"+node.Id, "")
+	return c.Client().Agent().PassTTL("service:"+node.Id, "")
 }
 
 func (c *consulRegistry) GetService(name string) ([]*registry.Service, error) {
@@ -281,9 +298,9 @@ func (c *consulRegistry) GetService(name string) ([]*registry.Service, error) {
 
 	// if we're connect enabled only get connect services
 	if c.connect {
-		rsp, _, err = c.Client.Health().Connect(name, "", false, c.queryOptions)
+		rsp, _, err = c.Client().Health().Connect(name, "", false, c.queryOptions)
 	} else {
-		rsp, _, err = c.Client.Health().Service(name, "", false, c.queryOptions)
+		rsp, _, err = c.Client().Health().Service(name, "", false, c.queryOptions)
 	}
 	if err != nil {
 		return nil, err
@@ -338,7 +355,7 @@ func (c *consulRegistry) GetService(name string) ([]*registry.Service, error) {
 
 		svc.Nodes = append(svc.Nodes, &registry.Node{
 			Id:       id,
-			Address:  fmt.Sprintf("%s:%d", address, s.Service.Port),
+			Address:  mnet.HostPort(address, s.Service.Port),
 			Metadata: decodeMetadata(s.Service.Tags),
 		})
 	}
@@ -351,7 +368,7 @@ func (c *consulRegistry) GetService(name string) ([]*registry.Service, error) {
 }
 
 func (c *consulRegistry) ListServices() ([]*registry.Service, error) {
-	rsp, _, err := c.Client.Catalog().Services(c.queryOptions)
+	rsp, _, err := c.Client().Catalog().Services(c.queryOptions)
 	if err != nil {
 		return nil, err
 	}
@@ -377,6 +394,36 @@ func (c *consulRegistry) Options() registry.Options {
 	return c.opts
 }
 
+func (c *consulRegistry) Client() *consul.Client {
+	if c.client != nil {
+		return c.client
+	}
+
+	for _, addr := range c.Address {
+		// set the address
+		c.config.Address = addr
+
+		// create a new client
+		tmpClient, _ := consul.NewClient(c.config)
+
+		// test the client
+		_, err := tmpClient.Agent().Host()
+		if err != nil {
+			continue
+		}
+
+		// set the client
+		c.client = tmpClient
+		return c.client
+	}
+
+	// set the default
+	c.client, _ = consul.NewClient(c.config)
+
+	// return the client
+	return c.client
+}
+
 func NewRegistry(opts ...registry.Option) registry.Registry {
 	cr := &consulRegistry{
 		opts:        registry.Options{},

registry/consul/registry_test.go

@@ -50,22 +50,24 @@ func newConsulTestRegistry(r *mockRegistry) (*consulRegistry, func()) {
 	}
 	cfg := consul.DefaultConfig()
 	cfg.Address = l.Addr().String()
-	cl, _ := consul.NewClient(cfg)
 
 	go newMockServer(r, l)
 
-	return &consulRegistry{
-			Address:     cfg.Address,
-			Client:      cl,
-			opts:        registry.Options{},
-			register:    make(map[string]uint64),
-			lastChecked: make(map[string]time.Time),
-			queryOptions: &consul.QueryOptions{
-				AllowStale: true,
-			},
-		}, func() {
-			l.Close()
-		}
+	var cr = &consulRegistry{
+		config:      cfg,
+		Address:     []string{cfg.Address},
+		opts:        registry.Options{},
+		register:    make(map[string]uint64),
+		lastChecked: make(map[string]time.Time),
+		queryOptions: &consul.QueryOptions{
+			AllowStale: true,
+		},
+	}
+	cr.Client()
+
+	return cr, func() {
+		l.Close()
+	}
 }
 
 func newServiceList(svc []*consul.ServiceEntry) []byte {

registry/consul/watcher.go

@@ -45,7 +45,7 @@ func newConsulWatcher(cr *consulRegistry, opts ...registry.WatchOption) (registr
 	}
 
 	wp.Handler = cw.handle
-	go wp.RunWithClientAndLogger(cr.Client, log.New(os.Stderr, "", log.LstdFlags))
+	go wp.RunWithClientAndLogger(cr.Client(), log.New(os.Stderr, "", log.LstdFlags))
 	cw.wp = wp
 
 	return cw, nil
@@ -209,7 +209,7 @@ func (cw *consulWatcher) handle(idx uint64, data interface{}) {
 		})
 		if err == nil {
 			wp.Handler = cw.serviceHandler
-			go wp.RunWithClientAndLogger(cw.r.Client, log.New(os.Stderr, "", log.LstdFlags))
+			go wp.RunWithClientAndLogger(cw.r.Client(), log.New(os.Stderr, "", log.LstdFlags))
 			cw.watchers[service] = wp
 			cw.next <- &registry.Result{Action: "create", Service: &registry.Service{Name: service}}
 		}

registry/handler/handler.go

@@ -0,0 +1,76 @@
+package handler
+
+import (
+	"context"
+
+	"github.com/micro/go-micro/errors"
+	"github.com/micro/go-micro/registry"
+	pb "github.com/micro/go-micro/registry/proto"
+	"github.com/micro/go-micro/registry/service"
+)
+
+type Registry struct {
+	// internal registry
+	Registry registry.Registry
+}
+
+func (r *Registry) GetService(ctx context.Context, req *pb.GetRequest, rsp *pb.GetResponse) error {
+	services, err := r.Registry.GetService(req.Service)
+	if err != nil {
+		return errors.InternalServerError("go.micro.registry", err.Error())
+	}
+	for _, srv := range services {
+		rsp.Services = append(rsp.Services, service.ToProto(srv))
+	}
+	return nil
+}
+
+func (r *Registry) Register(ctx context.Context, req *pb.Service, rsp *pb.EmptyResponse) error {
+	err := r.Registry.Register(service.ToService(req))
+	if err != nil {
+		return errors.InternalServerError("go.micro.registry", err.Error())
+	}
+	return nil
+}
+
+func (r *Registry) Deregister(ctx context.Context, req *pb.Service, rsp *pb.EmptyResponse) error {
+	err := r.Registry.Deregister(service.ToService(req))
+	if err != nil {
+		return errors.InternalServerError("go.micro.registry", err.Error())
+	}
+	return nil
+}
+
+func (r *Registry) ListServices(ctx context.Context, req *pb.ListRequest, rsp *pb.ListResponse) error {
+	services, err := r.Registry.ListServices()
+	if err != nil {
+		return errors.InternalServerError("go.micro.registry", err.Error())
+	}
+	for _, srv := range services {
+		rsp.Services = append(rsp.Services, service.ToProto(srv))
+	}
+	return nil
+}
+
+func (r *Registry) Watch(ctx context.Context, req *pb.WatchRequest, rsp pb.Registry_WatchStream) error {
+	watcher, err := r.Registry.Watch(registry.WatchService(req.Service))
+	if err != nil {
+		return errors.InternalServerError("go.micro.registry", err.Error())
+	}
+
+	for {
+		next, err := watcher.Next()
+		if err != nil {
+			return errors.InternalServerError("go.micro.registry", err.Error())
+		}
+		err = rsp.Send(&pb.Result{
+			Action:  next.Action,
+			Service: service.ToProto(next.Service),
+		})
+		if err != nil {
+			return errors.InternalServerError("go.micro.registry", err.Error())
+		}
+	}
+
+	return nil
+}

registry/mdns/mdns.go

@@ -2,6 +2,8 @@
 package mdns
 
 import (
+	"context"
+
 	"github.com/micro/go-micro/registry"
 )
 
@@ -9,3 +11,13 @@ import (
 func NewRegistry(opts ...registry.Option) registry.Registry {
 	return registry.NewRegistry(opts...)
 }
+
+// Domain sets the mdnsDomain
+func Domain(d string) registry.Option {
+	return func(o *registry.Options) {
+		if o.Context == nil {
+			o.Context = context.Background()
+		}
+		o.Context = context.WithValue(o.Context, "mdns.domain", d)
+	}
+}

registry/mdns_registry.go

@@ -14,6 +14,11 @@ import (
 	hash "github.com/mitchellh/hashstructure"
 )
 
+var (
+	// use a .micro domain rather than .local
+	mdnsDomain = "micro"
+)
+
 type mdnsTxt struct {
 	Service   string
 	Version   string
@@ -29,6 +34,8 @@ type mdnsEntry struct {
 
 type mdnsRegistry struct {
 	opts Options
+	// the mdns domain
+	domain string
 
 	sync.Mutex
 	services map[string][]*mdnsEntry
@@ -36,11 +43,25 @@ type mdnsRegistry struct {
 
 func newRegistry(opts ...Option) Registry {
 	options := Options{
+		Context: context.Background(),
 		Timeout: time.Millisecond * 100,
 	}
 
+	for _, o := range opts {
+		o(&options)
+	}
+
+	// set the domain
+	domain := mdnsDomain
+
+	d, ok := options.Context.Value("mdns.domain").(string)
+	if ok {
+		domain = d
+	}
+
 	return &mdnsRegistry{
 		opts:     options,
+		domain:   domain,
 		services: make(map[string][]*mdnsEntry),
 	}
 }
@@ -66,7 +87,7 @@ func (m *mdnsRegistry) Register(service *Service, opts ...RegisterOption) error
 		s, err := mdns.NewMDNSService(
 			service.Name,
 			"_services",
-			"",
+			m.domain+".",
 			"",
 			9999,
 			[]net.IP{net.ParseIP("0.0.0.0")},
@@ -141,7 +162,7 @@ func (m *mdnsRegistry) Register(service *Service, opts ...RegisterOption) error
 		s, err := mdns.NewMDNSService(
 			node.Id,
 			service.Name,
-			"",
+			m.domain+".",
 			"",
 			port,
 			[]net.IP{net.ParseIP(host)},
@@ -214,6 +235,8 @@ func (m *mdnsRegistry) GetService(service string) ([]*Service, error) {
 	p.Context, _ = context.WithTimeout(context.Background(), m.opts.Timeout)
 	// set entries channel
 	p.Entries = entries
+	// set the domain
+	p.Domain = m.domain
 
 	go func() {
 		for {
@@ -223,7 +246,9 @@ func (m *mdnsRegistry) GetService(service string) ([]*Service, error) {
 				if p.Service == "_services" {
 					continue
 				}
-
+				if p.Domain != m.domain {
+					continue
+				}
 				if e.TTL == 0 {
 					continue
 				}
@@ -288,6 +313,8 @@ func (m *mdnsRegistry) ListServices() ([]*Service, error) {
 	p.Context, _ = context.WithTimeout(context.Background(), m.opts.Timeout)
 	// set entries channel
 	p.Entries = entries
+	// set domain
+	p.Domain = m.domain
 
 	var services []*Service
 
@@ -298,7 +325,9 @@ func (m *mdnsRegistry) ListServices() ([]*Service, error) {
 				if e.TTL == 0 {
 					continue
 				}
-
+				if !strings.HasSuffix(e.Name, p.Domain+".") {
+					continue
+				}
 				name := strings.TrimSuffix(e.Name, "."+p.Service+"."+p.Domain+".")
 				if !serviceMap[name] {
 					serviceMap[name] = true
@@ -329,9 +358,10 @@ func (m *mdnsRegistry) Watch(opts ...WatchOption) (Watcher, error) {
 	}
 
 	md := &mdnsWatcher{
-		wo:   wo,
-		ch:   make(chan *mdns.ServiceEntry, 32),
-		exit: make(chan struct{}),
+		wo:     wo,
+		ch:     make(chan *mdns.ServiceEntry, 32),
+		exit:   make(chan struct{}),
+		domain: m.domain,
 	}
 
 	go func() {

registry/mdns_watcher.go

@@ -11,6 +11,8 @@ type mdnsWatcher struct {
 	wo   WatchOptions
 	ch   chan *mdns.ServiceEntry
 	exit chan struct{}
+	// the mdns domain
+	domain string
 }
 
 func (m *mdnsWatcher) Next() (*Result, error) {
@@ -46,13 +48,14 @@ func (m *mdnsWatcher) Next() (*Result, error) {
 				Endpoints: txt.Endpoints,
 			}
 
-			// TODO: don't hardcode .local.
-			if !strings.HasSuffix(e.Name, "."+service.Name+".local.") {
+			// skip anything without the domain we care about
+			suffix := fmt.Sprintf(".%s.%s.", service.Name, m.domain)
+			if !strings.HasSuffix(e.Name, suffix) {
 				continue
 			}
 
 			service.Nodes = append(service.Nodes, &Node{
-				Id:       strings.TrimSuffix(e.Name, "."+service.Name+".local."),
+				Id:       strings.TrimSuffix(e.Name, suffix),
 				Address:  fmt.Sprintf("%s:%d", e.AddrV4.String(), e.Port),
 				Metadata: txt.Metadata,
 			})

registry/proto/registry.micro.go

@@ -0,0 +1,224 @@
+// Code generated by protoc-gen-micro. DO NOT EDIT.
+// source: micro/go-micro/registry/proto/registry.proto
+
+package go_micro_registry
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+import (
+	context "context"
+	client "github.com/micro/go-micro/client"
+	server "github.com/micro/go-micro/server"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ client.Option
+var _ server.Option
+
+// Client API for Registry service
+
+type RegistryService interface {
+	GetService(ctx context.Context, in *GetRequest, opts ...client.CallOption) (*GetResponse, error)
+	Register(ctx context.Context, in *Service, opts ...client.CallOption) (*EmptyResponse, error)
+	Deregister(ctx context.Context, in *Service, opts ...client.CallOption) (*EmptyResponse, error)
+	ListServices(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error)
+	Watch(ctx context.Context, in *WatchRequest, opts ...client.CallOption) (Registry_WatchService, error)
+}
+
+type registryService struct {
+	c    client.Client
+	name string
+}
+
+func NewRegistryService(name string, c client.Client) RegistryService {
+	if c == nil {
+		c = client.NewClient()
+	}
+	if len(name) == 0 {
+		name = "go.micro.registry"
+	}
+	return &registryService{
+		c:    c,
+		name: name,
+	}
+}
+
+func (c *registryService) GetService(ctx context.Context, in *GetRequest, opts ...client.CallOption) (*GetResponse, error) {
+	req := c.c.NewRequest(c.name, "Registry.GetService", in)
+	out := new(GetResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *registryService) Register(ctx context.Context, in *Service, opts ...client.CallOption) (*EmptyResponse, error) {
+	req := c.c.NewRequest(c.name, "Registry.Register", in)
+	out := new(EmptyResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *registryService) Deregister(ctx context.Context, in *Service, opts ...client.CallOption) (*EmptyResponse, error) {
+	req := c.c.NewRequest(c.name, "Registry.Deregister", in)
+	out := new(EmptyResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *registryService) ListServices(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error) {
+	req := c.c.NewRequest(c.name, "Registry.ListServices", in)
+	out := new(ListResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *registryService) Watch(ctx context.Context, in *WatchRequest, opts ...client.CallOption) (Registry_WatchService, error) {
+	req := c.c.NewRequest(c.name, "Registry.Watch", &WatchRequest{})
+	stream, err := c.c.Stream(ctx, req, opts...)
+	if err != nil {
+		return nil, err
+	}
+	if err := stream.Send(in); err != nil {
+		return nil, err
+	}
+	return &registryServiceWatch{stream}, nil
+}
+
+type Registry_WatchService interface {
+	SendMsg(interface{}) error
+	RecvMsg(interface{}) error
+	Close() error
+	Recv() (*Result, error)
+}
+
+type registryServiceWatch struct {
+	stream client.Stream
+}
+
+func (x *registryServiceWatch) Close() error {
+	return x.stream.Close()
+}
+
+func (x *registryServiceWatch) SendMsg(m interface{}) error {
+	return x.stream.Send(m)
+}
+
+func (x *registryServiceWatch) RecvMsg(m interface{}) error {
+	return x.stream.Recv(m)
+}
+
+func (x *registryServiceWatch) Recv() (*Result, error) {
+	m := new(Result)
+	err := x.stream.Recv(m)
+	if err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// Server API for Registry service
+
+type RegistryHandler interface {
+	GetService(context.Context, *GetRequest, *GetResponse) error
+	Register(context.Context, *Service, *EmptyResponse) error
+	Deregister(context.Context, *Service, *EmptyResponse) error
+	ListServices(context.Context, *ListRequest, *ListResponse) error
+	Watch(context.Context, *WatchRequest, Registry_WatchStream) error
+}
+
+func RegisterRegistryHandler(s server.Server, hdlr RegistryHandler, opts ...server.HandlerOption) error {
+	type registry interface {
+		GetService(ctx context.Context, in *GetRequest, out *GetResponse) error
+		Register(ctx context.Context, in *Service, out *EmptyResponse) error
+		Deregister(ctx context.Context, in *Service, out *EmptyResponse) error
+		ListServices(ctx context.Context, in *ListRequest, out *ListResponse) error
+		Watch(ctx context.Context, stream server.Stream) error
+	}
+	type Registry struct {
+		registry
+	}
+	h := &registryHandler{hdlr}
+	return s.Handle(s.NewHandler(&Registry{h}, opts...))
+}
+
+type registryHandler struct {
+	RegistryHandler
+}
+
+func (h *registryHandler) GetService(ctx context.Context, in *GetRequest, out *GetResponse) error {
+	return h.RegistryHandler.GetService(ctx, in, out)
+}
+
+func (h *registryHandler) Register(ctx context.Context, in *Service, out *EmptyResponse) error {
+	return h.RegistryHandler.Register(ctx, in, out)
+}
+
+func (h *registryHandler) Deregister(ctx context.Context, in *Service, out *EmptyResponse) error {
+	return h.RegistryHandler.Deregister(ctx, in, out)
+}
+
+func (h *registryHandler) ListServices(ctx context.Context, in *ListRequest, out *ListResponse) error {
+	return h.RegistryHandler.ListServices(ctx, in, out)
+}
+
+func (h *registryHandler) Watch(ctx context.Context, stream server.Stream) error {
+	m := new(WatchRequest)
+	if err := stream.Recv(m); err != nil {
+		return err
+	}
+	return h.RegistryHandler.Watch(ctx, m, &registryWatchStream{stream})
+}
+
+type Registry_WatchStream interface {
+	SendMsg(interface{}) error
+	RecvMsg(interface{}) error
+	Close() error
+	Send(*Result) error
+}
+
+type registryWatchStream struct {
+	stream server.Stream
+}
+
+func (x *registryWatchStream) Close() error {
+	return x.stream.Close()
+}
+
+func (x *registryWatchStream) SendMsg(m interface{}) error {
+	return x.stream.Send(m)
+}
+
+func (x *registryWatchStream) RecvMsg(m interface{}) error {
+	return x.stream.Recv(m)
+}
+
+func (x *registryWatchStream) Send(m *Result) error {
+	return x.stream.Send(m)
+}

registry/proto/registry.pb.go

@@ -0,0 +1,848 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: micro/go-micro/registry/proto/registry.proto
+
+package go_micro_registry
+
+import (
+	context "context"
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	grpc "google.golang.org/grpc"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// Service represents a go-micro service
+type Service struct {
+	Name                 string            `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	Version              string            `protobuf:"bytes,2,opt,name=version,proto3" json:"version,omitempty"`
+	Metadata             map[string]string `protobuf:"bytes,3,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	Endpoints            []*Endpoint       `protobuf:"bytes,4,rep,name=endpoints,proto3" json:"endpoints,omitempty"`
+	Nodes                []*Node           `protobuf:"bytes,5,rep,name=nodes,proto3" json:"nodes,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *Service) Reset()         { *m = Service{} }
+func (m *Service) String() string { return proto.CompactTextString(m) }
+func (*Service) ProtoMessage()    {}
+func (*Service) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f287a6b809166ad2, []int{0}
+}
+
+func (m *Service) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Service.Unmarshal(m, b)
+}
+func (m *Service) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Service.Marshal(b, m, deterministic)
+}
+func (m *Service) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Service.Merge(m, src)
+}
+func (m *Service) XXX_Size() int {
+	return xxx_messageInfo_Service.Size(m)
+}
+func (m *Service) XXX_DiscardUnknown() {
+	xxx_messageInfo_Service.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Service proto.InternalMessageInfo
+
+func (m *Service) GetName() string {
+	if m != nil {
+		return m.Name
+	}
+	return ""
+}
+
+func (m *Service) GetVersion() string {
+	if m != nil {
+		return m.Version
+	}
+	return ""
+}
+
+func (m *Service) GetMetadata() map[string]string {
+	if m != nil {
+		return m.Metadata
+	}
+	return nil
+}
+
+func (m *Service) GetEndpoints() []*Endpoint {
+	if m != nil {
+		return m.Endpoints
+	}
+	return nil
+}
+
+func (m *Service) GetNodes() []*Node {
+	if m != nil {
+		return m.Nodes
+	}
+	return nil
+}
+
+// Node represents the node the service is on
+type Node struct {
+	Id                   string            `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Address              string            `protobuf:"bytes,2,opt,name=address,proto3" json:"address,omitempty"`
+	Port                 int64             `protobuf:"varint,3,opt,name=port,proto3" json:"port,omitempty"`
+	Metadata             map[string]string `protobuf:"bytes,4,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *Node) Reset()         { *m = Node{} }
+func (m *Node) String() string { return proto.CompactTextString(m) }
+func (*Node) ProtoMessage()    {}
+func (*Node) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f287a6b809166ad2, []int{1}
+}
+
+func (m *Node) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Node.Unmarshal(m, b)
+}
+func (m *Node) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Node.Marshal(b, m, deterministic)
+}
+func (m *Node) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Node.Merge(m, src)
+}
+func (m *Node) XXX_Size() int {
+	return xxx_messageInfo_Node.Size(m)
+}
+func (m *Node) XXX_DiscardUnknown() {
+	xxx_messageInfo_Node.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Node proto.InternalMessageInfo
+
+func (m *Node) GetId() string {
+	if m != nil {
+		return m.Id
+	}
+	return ""
+}
+
+func (m *Node) GetAddress() string {
+	if m != nil {
+		return m.Address
+	}
+	return ""
+}
+
+func (m *Node) GetPort() int64 {
+	if m != nil {
+		return m.Port
+	}
+	return 0
+}
+
+func (m *Node) GetMetadata() map[string]string {
+	if m != nil {
+		return m.Metadata
+	}
+	return nil
+}
+
+// Endpoint is a endpoint provided by a service
+type Endpoint struct {
+	Name                 string            `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	Request              *Value            `protobuf:"bytes,2,opt,name=request,proto3" json:"request,omitempty"`
+	Response             *Value            `protobuf:"bytes,3,opt,name=response,proto3" json:"response,omitempty"`
+	Metadata             map[string]string `protobuf:"bytes,4,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *Endpoint) Reset()         { *m = Endpoint{} }
+func (m *Endpoint) String() string { return proto.CompactTextString(m) }
+func (*Endpoint) ProtoMessage()    {}
+func (*Endpoint) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f287a6b809166ad2, []int{2}
+}
+
+func (m *Endpoint) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Endpoint.Unmarshal(m, b)
+}
+func (m *Endpoint) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Endpoint.Marshal(b, m, deterministic)
+}
+func (m *Endpoint) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Endpoint.Merge(m, src)
+}
+func (m *Endpoint) XXX_Size() int {
+	return xxx_messageInfo_Endpoint.Size(m)
+}
+func (m *Endpoint) XXX_DiscardUnknown() {
+	xxx_messageInfo_Endpoint.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Endpoint proto.InternalMessageInfo
+
+func (m *Endpoint) GetName() string {
+	if m != nil {
+		return m.Name
+	}
+	return ""
+}
+
+func (m *Endpoint) GetRequest() *Value {
+	if m != nil {
+		return m.Request
+	}
+	return nil
+}
+
+func (m *Endpoint) GetResponse() *Value {
+	if m != nil {
+		return m.Response
+	}
+	return nil
+}
+
+func (m *Endpoint) GetMetadata() map[string]string {
+	if m != nil {
+		return m.Metadata
+	}
+	return nil
+}
+
+// Value is an opaque value for a request or response
+type Value struct {
+	Name                 string   `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	Type                 string   `protobuf:"bytes,2,opt,name=type,proto3" json:"type,omitempty"`
+	Values               []*Value `protobuf:"bytes,3,rep,name=values,proto3" json:"values,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Value) Reset()         { *m = Value{} }
+func (m *Value) String() string { return proto.CompactTextString(m) }
+func (*Value) ProtoMessage()    {}
+func (*Value) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f287a6b809166ad2, []int{3}
+}
+
+func (m *Value) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Value.Unmarshal(m, b)
+}
+func (m *Value) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Value.Marshal(b, m, deterministic)
+}
+func (m *Value) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Value.Merge(m, src)
+}
+func (m *Value) XXX_Size() int {
+	return xxx_messageInfo_Value.Size(m)
+}
+func (m *Value) XXX_DiscardUnknown() {
+	xxx_messageInfo_Value.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Value proto.InternalMessageInfo
+
+func (m *Value) GetName() string {
+	if m != nil {
+		return m.Name
+	}
+	return ""
+}
+
+func (m *Value) GetType() string {
+	if m != nil {
+		return m.Type
+	}
+	return ""
+}
+
+func (m *Value) GetValues() []*Value {
+	if m != nil {
+		return m.Values
+	}
+	return nil
+}
+
+// Result is returns by the watcher
+type Result struct {
+	Action               string   `protobuf:"bytes,1,opt,name=action,proto3" json:"action,omitempty"`
+	Service              *Service `protobuf:"bytes,2,opt,name=service,proto3" json:"service,omitempty"`
+	Timestamp            int64    `protobuf:"varint,3,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Result) Reset()         { *m = Result{} }
+func (m *Result) String() string { return proto.CompactTextString(m) }
+func (*Result) ProtoMessage()    {}
+func (*Result) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f287a6b809166ad2, []int{4}
+}
+
+func (m *Result) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Result.Unmarshal(m, b)
+}
+func (m *Result) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Result.Marshal(b, m, deterministic)
+}
+func (m *Result) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Result.Merge(m, src)
+}
+func (m *Result) XXX_Size() int {
+	return xxx_messageInfo_Result.Size(m)
+}
+func (m *Result) XXX_DiscardUnknown() {
+	xxx_messageInfo_Result.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Result proto.InternalMessageInfo
+
+func (m *Result) GetAction() string {
+	if m != nil {
+		return m.Action
+	}
+	return ""
+}
+
+func (m *Result) GetService() *Service {
+	if m != nil {
+		return m.Service
+	}
+	return nil
+}
+
+func (m *Result) GetTimestamp() int64 {
+	if m != nil {
+		return m.Timestamp
+	}
+	return 0
+}
+
+type EmptyResponse struct {
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *EmptyResponse) Reset()         { *m = EmptyResponse{} }
+func (m *EmptyResponse) String() string { return proto.CompactTextString(m) }
+func (*EmptyResponse) ProtoMessage()    {}
+func (*EmptyResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f287a6b809166ad2, []int{5}
+}
+
+func (m *EmptyResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_EmptyResponse.Unmarshal(m, b)
+}
+func (m *EmptyResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_EmptyResponse.Marshal(b, m, deterministic)
+}
+func (m *EmptyResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_EmptyResponse.Merge(m, src)
+}
+func (m *EmptyResponse) XXX_Size() int {
+	return xxx_messageInfo_EmptyResponse.Size(m)
+}
+func (m *EmptyResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_EmptyResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_EmptyResponse proto.InternalMessageInfo
+
+type GetRequest struct {
+	Service              string   `protobuf:"bytes,1,opt,name=service,proto3" json:"service,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *GetRequest) Reset()         { *m = GetRequest{} }
+func (m *GetRequest) String() string { return proto.CompactTextString(m) }
+func (*GetRequest) ProtoMessage()    {}
+func (*GetRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f287a6b809166ad2, []int{6}
+}
+
+func (m *GetRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GetRequest.Unmarshal(m, b)
+}
+func (m *GetRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GetRequest.Marshal(b, m, deterministic)
+}
+func (m *GetRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GetRequest.Merge(m, src)
+}
+func (m *GetRequest) XXX_Size() int {
+	return xxx_messageInfo_GetRequest.Size(m)
+}
+func (m *GetRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_GetRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GetRequest proto.InternalMessageInfo
+
+func (m *GetRequest) GetService() string {
+	if m != nil {
+		return m.Service
+	}
+	return ""
+}
+
+type GetResponse struct {
+	Services             []*Service `protobuf:"bytes,1,rep,name=services,proto3" json:"services,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
+	XXX_unrecognized     []byte     `json:"-"`
+	XXX_sizecache        int32      `json:"-"`
+}
+
+func (m *GetResponse) Reset()         { *m = GetResponse{} }
+func (m *GetResponse) String() string { return proto.CompactTextString(m) }
+func (*GetResponse) ProtoMessage()    {}
+func (*GetResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f287a6b809166ad2, []int{7}
+}
+
+func (m *GetResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GetResponse.Unmarshal(m, b)
+}
+func (m *GetResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GetResponse.Marshal(b, m, deterministic)
+}
+func (m *GetResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GetResponse.Merge(m, src)
+}
+func (m *GetResponse) XXX_Size() int {
+	return xxx_messageInfo_GetResponse.Size(m)
+}
+func (m *GetResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_GetResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GetResponse proto.InternalMessageInfo
+
+func (m *GetResponse) GetServices() []*Service {
+	if m != nil {
+		return m.Services
+	}
+	return nil
+}
+
+type ListRequest struct {
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ListRequest) Reset()         { *m = ListRequest{} }
+func (m *ListRequest) String() string { return proto.CompactTextString(m) }
+func (*ListRequest) ProtoMessage()    {}
+func (*ListRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f287a6b809166ad2, []int{8}
+}
+
+func (m *ListRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ListRequest.Unmarshal(m, b)
+}
+func (m *ListRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ListRequest.Marshal(b, m, deterministic)
+}
+func (m *ListRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ListRequest.Merge(m, src)
+}
+func (m *ListRequest) XXX_Size() int {
+	return xxx_messageInfo_ListRequest.Size(m)
+}
+func (m *ListRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_ListRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ListRequest proto.InternalMessageInfo
+
+type ListResponse struct {
+	Services             []*Service `protobuf:"bytes,1,rep,name=services,proto3" json:"services,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
+	XXX_unrecognized     []byte     `json:"-"`
+	XXX_sizecache        int32      `json:"-"`
+}
+
+func (m *ListResponse) Reset()         { *m = ListResponse{} }
+func (m *ListResponse) String() string { return proto.CompactTextString(m) }
+func (*ListResponse) ProtoMessage()    {}
+func (*ListResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f287a6b809166ad2, []int{9}
+}
+
+func (m *ListResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ListResponse.Unmarshal(m, b)
+}
+func (m *ListResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ListResponse.Marshal(b, m, deterministic)
+}
+func (m *ListResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ListResponse.Merge(m, src)
+}
+func (m *ListResponse) XXX_Size() int {
+	return xxx_messageInfo_ListResponse.Size(m)
+}
+func (m *ListResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_ListResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ListResponse proto.InternalMessageInfo
+
+func (m *ListResponse) GetServices() []*Service {
+	if m != nil {
+		return m.Services
+	}
+	return nil
+}
+
+type WatchRequest struct {
+	// service is optional
+	Service              string   `protobuf:"bytes,1,opt,name=service,proto3" json:"service,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *WatchRequest) Reset()         { *m = WatchRequest{} }
+func (m *WatchRequest) String() string { return proto.CompactTextString(m) }
+func (*WatchRequest) ProtoMessage()    {}
+func (*WatchRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_f287a6b809166ad2, []int{10}
+}
+
+func (m *WatchRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_WatchRequest.Unmarshal(m, b)
+}
+func (m *WatchRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_WatchRequest.Marshal(b, m, deterministic)
+}
+func (m *WatchRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_WatchRequest.Merge(m, src)
+}
+func (m *WatchRequest) XXX_Size() int {
+	return xxx_messageInfo_WatchRequest.Size(m)
+}
+func (m *WatchRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_WatchRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_WatchRequest proto.InternalMessageInfo
+
+func (m *WatchRequest) GetService() string {
+	if m != nil {
+		return m.Service
+	}
+	return ""
+}
+
+func init() {
+	proto.RegisterType((*Service)(nil), "go.micro.registry.Service")
+	proto.RegisterMapType((map[string]string)(nil), "go.micro.registry.Service.MetadataEntry")
+	proto.RegisterType((*Node)(nil), "go.micro.registry.Node")
+	proto.RegisterMapType((map[string]string)(nil), "go.micro.registry.Node.MetadataEntry")
+	proto.RegisterType((*Endpoint)(nil), "go.micro.registry.Endpoint")
+	proto.RegisterMapType((map[string]string)(nil), "go.micro.registry.Endpoint.MetadataEntry")
+	proto.RegisterType((*Value)(nil), "go.micro.registry.Value")
+	proto.RegisterType((*Result)(nil), "go.micro.registry.Result")
+	proto.RegisterType((*EmptyResponse)(nil), "go.micro.registry.EmptyResponse")
+	proto.RegisterType((*GetRequest)(nil), "go.micro.registry.GetRequest")
+	proto.RegisterType((*GetResponse)(nil), "go.micro.registry.GetResponse")
+	proto.RegisterType((*ListRequest)(nil), "go.micro.registry.ListRequest")
+	proto.RegisterType((*ListResponse)(nil), "go.micro.registry.ListResponse")
+	proto.RegisterType((*WatchRequest)(nil), "go.micro.registry.WatchRequest")
+}
+
+func init() {
+	proto.RegisterFile("micro/go-micro/registry/proto/registry.proto", fileDescriptor_f287a6b809166ad2)
+}
+
+var fileDescriptor_f287a6b809166ad2 = []byte{
+	// 577 bytes of a gzipped FileDescriptorProto
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+	0xb0, 0xce, 0xcb, 0xd6, 0x5c, 0xbc, 0x07, 0x8d, 0xfb, 0x1b, 0xc9, 0x13, 0xe8, 0xa8, 0xc8, 0xb1,
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+	0x00,
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConn
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion4
+
+// RegistryClient is the client API for Registry service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
+type RegistryClient interface {
+	GetService(ctx context.Context, in *GetRequest, opts ...grpc.CallOption) (*GetResponse, error)
+	Register(ctx context.Context, in *Service, opts ...grpc.CallOption) (*EmptyResponse, error)
+	Deregister(ctx context.Context, in *Service, opts ...grpc.CallOption) (*EmptyResponse, error)
+	ListServices(ctx context.Context, in *ListRequest, opts ...grpc.CallOption) (*ListResponse, error)
+	Watch(ctx context.Context, in *WatchRequest, opts ...grpc.CallOption) (Registry_WatchClient, error)
+}
+
+type registryClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewRegistryClient(cc *grpc.ClientConn) RegistryClient {
+	return &registryClient{cc}
+}
+
+func (c *registryClient) GetService(ctx context.Context, in *GetRequest, opts ...grpc.CallOption) (*GetResponse, error) {
+	out := new(GetResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.registry.Registry/GetService", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *registryClient) Register(ctx context.Context, in *Service, opts ...grpc.CallOption) (*EmptyResponse, error) {
+	out := new(EmptyResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.registry.Registry/Register", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *registryClient) Deregister(ctx context.Context, in *Service, opts ...grpc.CallOption) (*EmptyResponse, error) {
+	out := new(EmptyResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.registry.Registry/Deregister", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *registryClient) ListServices(ctx context.Context, in *ListRequest, opts ...grpc.CallOption) (*ListResponse, error) {
+	out := new(ListResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.registry.Registry/ListServices", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *registryClient) Watch(ctx context.Context, in *WatchRequest, opts ...grpc.CallOption) (Registry_WatchClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_Registry_serviceDesc.Streams[0], "/go.micro.registry.Registry/Watch", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &registryWatchClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type Registry_WatchClient interface {
+	Recv() (*Result, error)
+	grpc.ClientStream
+}
+
+type registryWatchClient struct {
+	grpc.ClientStream
+}
+
+func (x *registryWatchClient) Recv() (*Result, error) {
+	m := new(Result)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// RegistryServer is the server API for Registry service.
+type RegistryServer interface {
+	GetService(context.Context, *GetRequest) (*GetResponse, error)
+	Register(context.Context, *Service) (*EmptyResponse, error)
+	Deregister(context.Context, *Service) (*EmptyResponse, error)
+	ListServices(context.Context, *ListRequest) (*ListResponse, error)
+	Watch(*WatchRequest, Registry_WatchServer) error
+}
+
+func RegisterRegistryServer(s *grpc.Server, srv RegistryServer) {
+	s.RegisterService(&_Registry_serviceDesc, srv)
+}
+
+func _Registry_GetService_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(RegistryServer).GetService(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.registry.Registry/GetService",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(RegistryServer).GetService(ctx, req.(*GetRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Registry_Register_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(Service)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(RegistryServer).Register(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.registry.Registry/Register",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(RegistryServer).Register(ctx, req.(*Service))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Registry_Deregister_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(Service)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(RegistryServer).Deregister(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.registry.Registry/Deregister",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(RegistryServer).Deregister(ctx, req.(*Service))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Registry_ListServices_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ListRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(RegistryServer).ListServices(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.registry.Registry/ListServices",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(RegistryServer).ListServices(ctx, req.(*ListRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Registry_Watch_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(WatchRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(RegistryServer).Watch(m, &registryWatchServer{stream})
+}
+
+type Registry_WatchServer interface {
+	Send(*Result) error
+	grpc.ServerStream
+}
+
+type registryWatchServer struct {
+	grpc.ServerStream
+}
+
+func (x *registryWatchServer) Send(m *Result) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+var _Registry_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "go.micro.registry.Registry",
+	HandlerType: (*RegistryServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "GetService",
+			Handler:    _Registry_GetService_Handler,
+		},
+		{
+			MethodName: "Register",
+			Handler:    _Registry_Register_Handler,
+		},
+		{
+			MethodName: "Deregister",
+			Handler:    _Registry_Deregister_Handler,
+		},
+		{
+			MethodName: "ListServices",
+			Handler:    _Registry_ListServices_Handler,
+		},
+	},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "Watch",
+			Handler:       _Registry_Watch_Handler,
+			ServerStreams: true,
+		},
+	},
+	Metadata: "micro/go-micro/registry/proto/registry.proto",
+}

registry/proto/registry.proto

@@ -0,0 +1,73 @@
+syntax = "proto3";
+
+package go.micro.registry;
+
+service Registry {
+	rpc GetService(GetRequest) returns (GetResponse) {};
+	rpc Register(Service) returns (EmptyResponse) {};
+	rpc Deregister(Service) returns (EmptyResponse) {};
+	rpc ListServices(ListRequest) returns (ListResponse) {};
+	rpc Watch(WatchRequest) returns (stream Result) {};
+}
+
+// Service represents a go-micro service
+message Service {
+	string name = 1;
+	string version = 2;
+	map<string,string> metadata = 3;
+	repeated Endpoint endpoints = 4;
+	repeated Node nodes = 5;
+}
+
+// Node represents the node the service is on
+message Node {
+	string id = 1;
+	string address = 2;
+	int64 port = 3;
+	map<string,string> metadata = 4;
+}
+
+// Endpoint is a endpoint provided by a service
+message Endpoint {
+	string name = 1;
+	Value request = 2;
+	Value response = 3;
+	map<string, string> metadata = 4;
+}
+
+// Value is an opaque value for a request or response
+message Value {
+	string name = 1;
+	string type = 2;
+	repeated Value values = 3;
+}
+
+// Result is returns by the watcher
+message Result {
+	string action = 1; // create, update, delete
+	Service service = 2;
+	int64 timestamp = 3; // unix timestamp
+}
+
+message EmptyResponse {}
+
+message GetRequest {
+	string service = 1;
+}
+
+message GetResponse {
+	repeated Service services = 1;
+}
+
+message ListRequest {
+	// TODO: filtering
+}
+
+message ListResponse {
+	repeated Service services = 1;
+}
+
+message WatchRequest {
+	// service is optional
+	string service = 1;
+}

registry/registry.go

@@ -29,7 +29,7 @@ var (
 	DefaultRegistry = NewRegistry()
 
 	// Not found error when GetService is called
-	ErrNotFound = errors.New("not found")
+	ErrNotFound = errors.New("service not found")
 	// Watcher stopped error when watcher is stopped
 	ErrWatcherStopped = errors.New("watcher stopped")
 )

registry/service/service.go

@@ -0,0 +1,155 @@
+// Package service uses the registry service
+package service
+
+import (
+	"context"
+	"time"
+
+	"github.com/micro/go-micro/client"
+	"github.com/micro/go-micro/registry"
+	pb "github.com/micro/go-micro/registry/proto"
+)
+
+var (
+	// The default service name
+	DefaultService = "go.micro.service"
+)
+
+type serviceRegistry struct {
+	opts registry.Options
+	// name of the registry
+	name string
+	// address
+	address []string
+	// client to call registry
+	client pb.RegistryService
+}
+
+func (s *serviceRegistry) callOpts() []client.CallOption {
+	var opts []client.CallOption
+
+	// set registry address
+	if len(s.address) > 0 {
+		opts = append(opts, client.WithAddress(s.address...))
+	}
+
+	// set timeout
+	if s.opts.Timeout > time.Duration(0) {
+		opts = append(opts, client.WithRequestTimeout(s.opts.Timeout))
+	}
+
+	return opts
+}
+
+func (s *serviceRegistry) Init(opts ...registry.Option) error {
+	for _, o := range opts {
+		o(&s.opts)
+	}
+	return nil
+}
+
+func (s *serviceRegistry) Options() registry.Options {
+	return s.opts
+}
+
+func (s *serviceRegistry) Register(srv *registry.Service, opts ...registry.RegisterOption) error {
+	var options registry.RegisterOptions
+	for _, o := range opts {
+		o(&options)
+	}
+
+	// register the service
+	_, err := s.client.Register(context.TODO(), ToProto(srv), s.callOpts()...)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *serviceRegistry) Deregister(srv *registry.Service) error {
+	// deregister the service
+	_, err := s.client.Deregister(context.TODO(), ToProto(srv), s.callOpts()...)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (s *serviceRegistry) GetService(name string) ([]*registry.Service, error) {
+	rsp, err := s.client.GetService(context.TODO(), &pb.GetRequest{
+		Service: name,
+	}, s.callOpts()...)
+
+	if err != nil {
+		return nil, err
+	}
+
+	var services []*registry.Service
+	for _, service := range rsp.Services {
+		services = append(services, ToService(service))
+	}
+	return services, nil
+}
+
+func (s *serviceRegistry) ListServices() ([]*registry.Service, error) {
+	rsp, err := s.client.ListServices(context.TODO(), &pb.ListRequest{}, s.callOpts()...)
+	if err != nil {
+		return nil, err
+	}
+
+	var services []*registry.Service
+	for _, service := range rsp.Services {
+		services = append(services, ToService(service))
+	}
+
+	return services, nil
+}
+
+func (s *serviceRegistry) Watch(opts ...registry.WatchOption) (registry.Watcher, error) {
+	var options registry.WatchOptions
+	for _, o := range opts {
+		o(&options)
+	}
+
+	stream, err := s.client.Watch(context.TODO(), &pb.WatchRequest{
+		Service: options.Service,
+	}, s.callOpts()...)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return newWatcher(stream), nil
+}
+
+func (s *serviceRegistry) String() string {
+	return s.name
+}
+
+// NewRegistry returns a new registry service client
+func NewRegistry(opts ...registry.Option) registry.Registry {
+	var options registry.Options
+	for _, o := range opts {
+		o(&options)
+	}
+
+	// use mdns to find the service registry
+	mReg := registry.NewRegistry()
+
+	// create new client with mdns
+	cli := client.NewClient(
+		client.Registry(mReg),
+	)
+
+	// service name
+	// TODO: accept option
+	name := DefaultService
+
+	return &serviceRegistry{
+		opts:    options,
+		name:    name,
+		address: options.Addrs,
+		client:  pb.NewRegistryService(name, cli),
+	}
+}

registry/service/util.go

@@ -0,0 +1,133 @@
+package service
+
+import (
+	"github.com/micro/go-micro/registry"
+	pb "github.com/micro/go-micro/registry/proto"
+)
+
+func values(v []*registry.Value) []*pb.Value {
+	if len(v) == 0 {
+		return []*pb.Value{}
+	}
+
+	var vs []*pb.Value
+	for _, vi := range v {
+		vs = append(vs, &pb.Value{
+			Name:   vi.Name,
+			Type:   vi.Type,
+			Values: values(vi.Values),
+		})
+	}
+	return vs
+}
+
+func toValues(v []*pb.Value) []*registry.Value {
+	if len(v) == 0 {
+		return []*registry.Value{}
+	}
+
+	var vs []*registry.Value
+	for _, vi := range v {
+		vs = append(vs, &registry.Value{
+			Name:   vi.Name,
+			Type:   vi.Type,
+			Values: toValues(vi.Values),
+		})
+	}
+	return vs
+}
+
+func ToProto(s *registry.Service) *pb.Service {
+	var endpoints []*pb.Endpoint
+	for _, ep := range s.Endpoints {
+		var request, response *pb.Value
+
+		if ep.Request != nil {
+			request = &pb.Value{
+				Name:   ep.Request.Name,
+				Type:   ep.Request.Type,
+				Values: values(ep.Request.Values),
+			}
+		}
+
+		if ep.Response != nil {
+			response = &pb.Value{
+				Name:   ep.Response.Name,
+				Type:   ep.Response.Type,
+				Values: values(ep.Response.Values),
+			}
+		}
+
+		endpoints = append(endpoints, &pb.Endpoint{
+			Name:     ep.Name,
+			Request:  request,
+			Response: response,
+			Metadata: ep.Metadata,
+		})
+	}
+
+	var nodes []*pb.Node
+
+	for _, node := range s.Nodes {
+		nodes = append(nodes, &pb.Node{
+			Id:       node.Id,
+			Address:  node.Address,
+			Metadata: node.Metadata,
+		})
+	}
+
+	return &pb.Service{
+		Name:      s.Name,
+		Version:   s.Version,
+		Metadata:  s.Metadata,
+		Endpoints: endpoints,
+		Nodes:     nodes,
+	}
+}
+
+func ToService(s *pb.Service) *registry.Service {
+	var endpoints []*registry.Endpoint
+	for _, ep := range s.Endpoints {
+		var request, response *registry.Value
+
+		if ep.Request != nil {
+			request = &registry.Value{
+				Name:   ep.Request.Name,
+				Type:   ep.Request.Type,
+				Values: toValues(ep.Request.Values),
+			}
+		}
+
+		if ep.Response != nil {
+			response = &registry.Value{
+				Name:   ep.Response.Name,
+				Type:   ep.Response.Type,
+				Values: toValues(ep.Response.Values),
+			}
+		}
+
+		endpoints = append(endpoints, &registry.Endpoint{
+			Name:     ep.Name,
+			Request:  request,
+			Response: response,
+			Metadata: ep.Metadata,
+		})
+	}
+
+	var nodes []*registry.Node
+	for _, node := range s.Nodes {
+		nodes = append(nodes, &registry.Node{
+			Id:       node.Id,
+			Address:  node.Address,
+			Metadata: node.Metadata,
+		})
+	}
+
+	return &registry.Service{
+		Name:      s.Name,
+		Version:   s.Version,
+		Metadata:  s.Metadata,
+		Endpoints: endpoints,
+		Nodes:     nodes,
+	}
+}

registry/service/watcher.go

@@ -0,0 +1,49 @@
+package service
+
+import (
+	"github.com/micro/go-micro/registry"
+	pb "github.com/micro/go-micro/registry/proto"
+)
+
+type serviceWatcher struct {
+	stream pb.Registry_WatchService
+	closed chan bool
+}
+
+func (s *serviceWatcher) Next() (*registry.Result, error) {
+	for {
+		// check if closed
+		select {
+		case <-s.closed:
+			return nil, registry.ErrWatcherStopped
+		default:
+		}
+
+		r, err := s.stream.Recv()
+		if err != nil {
+			return nil, err
+		}
+
+		return &registry.Result{
+			Action:  r.Action,
+			Service: ToService(r.Service),
+		}, nil
+	}
+}
+
+func (s *serviceWatcher) Stop() {
+	select {
+	case <-s.closed:
+		return
+	default:
+		close(s.closed)
+		s.stream.Close()
+	}
+}
+
+func newWatcher(stream pb.Registry_WatchService) registry.Watcher {
+	return &serviceWatcher{
+		stream: stream,
+		closed: make(chan bool),
+	}
+}

router/default.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/google/uuid"
 	"github.com/micro/go-micro/registry"
+	"github.com/micro/go-micro/util/log"
 )
 
 const (
@@ -43,10 +44,9 @@ var (
 // router implements default router
 type router struct {
 	sync.RWMutex
-	// embed the table
-	table     *table
-	opts      Options
+	options   Options
 	status    Status
+	table     *table
 	exit      chan struct{}
 	errChan   chan error
 	eventChan chan *Event
@@ -67,33 +67,41 @@ func newRouter(opts ...Option) Router {
 		o(&options)
 	}
 
-	r := &router{
+	// set initial status to Stopped
+	status := Status{Code: Stopped, Error: nil}
+
+	return &router{
+		options:     options,
+		status:      status,
 		table:       newTable(),
-		opts:        options,
-		status:      Status{Code: Stopped, Error: nil},
 		advertWg:    &sync.WaitGroup{},
 		wg:          &sync.WaitGroup{},
 		subscribers: make(map[string]chan *Advert),
 	}
-
-	go r.run()
-
-	return r
 }
 
 // Init initializes router with given options
 func (r *router) Init(opts ...Option) error {
+	r.Lock()
+	defer r.Unlock()
+
 	for _, o := range opts {
-		o(&r.opts)
+		o(&r.options)
 	}
+
 	return nil
 }
 
 // Options returns router options
 func (r *router) Options() Options {
-	return r.opts
+	r.Lock()
+	options := r.options
+	r.Unlock()
+
+	return options
 }
 
+// Table returns routing table
 func (r *router) Table() Table {
 	return r.table
 }
@@ -113,6 +121,9 @@ func (r *router) manageRoute(route Route, action string) error {
 		if err := r.table.Delete(route); err != nil && err != ErrRouteNotFound {
 			return fmt.Errorf("failed deleting route for service %s: %s", route.Service, err)
 		}
+	case "solicit":
+		// nothing to do here
+		return nil
 	default:
 		return fmt.Errorf("failed to manage route for service %s. Unknown action: %s", route.Service, action)
 	}
@@ -132,7 +143,8 @@ func (r *router) manageServiceRoutes(service *registry.Service, action string) e
 			Service: service.Name,
 			Address: node.Address,
 			Gateway: "",
-			Network: r.opts.Network,
+			Network: r.options.Network,
+			Router:  r.options.Id,
 			Link:    DefaultLink,
 			Metric:  DefaultLocalMetric,
 		}
@@ -174,13 +186,26 @@ func (r *router) manageRegistryRoutes(reg registry.Registry, action string) erro
 // watchRegistry watches registry and updates routing table based on the received events.
 // It returns error if either the registry watcher fails with error or if the routing table update fails.
 func (r *router) watchRegistry(w registry.Watcher) error {
+	exit := make(chan bool)
+
+	defer func() {
+		// close the exit channel when the go routine finishes
+		close(exit)
+		r.wg.Done()
+	}()
+
 	// wait in the background for the router to stop
 	// when the router stops, stop the watcher and exit
 	r.wg.Add(1)
 	go func() {
-		defer r.wg.Done()
-		<-r.exit
-		w.Stop()
+		defer w.Stop()
+
+		select {
+		case <-r.exit:
+			return
+		case <-exit:
+			return
+		}
 	}()
 
 	var watchErr error
@@ -205,13 +230,26 @@ func (r *router) watchRegistry(w registry.Watcher) error {
 // watchTable watches routing table entries and either adds or deletes locally registered service to/from network registry
 // It returns error if the locally registered services either fails to be added/deleted to/from network registry.
 func (r *router) watchTable(w Watcher) error {
+	exit := make(chan bool)
+
+	defer func() {
+		// close the exit channel when the go routine finishes
+		close(exit)
+		r.wg.Done()
+	}()
+
 	// wait in the background for the router to stop
 	// when the router stops, stop the watcher and exit
 	r.wg.Add(1)
 	go func() {
-		defer r.wg.Done()
-		<-r.exit
-		w.Stop()
+		defer w.Stop()
+
+		select {
+		case <-r.exit:
+			return
+		case <-exit:
+			return
+		}
 	}()
 
 	var watchErr error
@@ -245,13 +283,14 @@ func (r *router) publishAdvert(advType AdvertType, events []*Event) {
 	defer r.advertWg.Done()
 
 	a := &Advert{
-		Id:        r.opts.Id,
+		Id:        r.options.Id,
 		Type:      advType,
 		TTL:       DefaultAdvertTTL,
 		Timestamp: time.Now(),
 		Events:    events,
 	}
 
+	log.Debugf("Router publishing advert; %+v", a)
 	r.RLock()
 	for _, sub := range r.subscribers {
 		// check the exit chan first
@@ -275,6 +314,7 @@ func (r *router) publishAdvert(advType AdvertType, events []*Event) {
 func (r *router) advertiseTable() error {
 	// create table advertisement ticker
 	ticker := time.NewTicker(AdvertiseTableTick)
+	defer ticker.Stop()
 
 	for {
 		select {
@@ -324,6 +364,8 @@ type routeAdvert struct {
 func (r *router) advertiseEvents() error {
 	// ticker to periodically scan event for advertising
 	ticker := time.NewTicker(AdvertiseEventsTick)
+	defer ticker.Stop()
+
 	// advertMap is a map of advert events
 	advertMap := make(map[uint64]*routeAdvert)
 
@@ -426,7 +468,6 @@ func (r *router) advertiseEvents() error {
 			// update event penalty and recorded timestamp
 			advert.lastUpdate = time.Now()
 			advert.penalty += penalty
-
 		case <-r.exit:
 			// first wait for the advertiser to finish
 			r.advertWg.Wait()
@@ -435,100 +476,122 @@ func (r *router) advertiseEvents() error {
 	}
 }
 
+// close closes exit channels
+func (r *router) close() {
+	// notify all goroutines to finish
+	close(r.exit)
+
+	// drain the advertise channel only if advertising
+	if r.status.Code == Advertising {
+		// drain the event channel
+		for range r.eventChan {
+		}
+
+		// close advert subscribers
+		for id, sub := range r.subscribers {
+			// close the channel
+			close(sub)
+
+			// delete the subscriber
+			delete(r.subscribers, id)
+		}
+	}
+
+	// mark the router as Stopped and set its Error to nil
+	r.status = Status{Code: Stopped, Error: nil}
+}
+
 // watchErrors watches router errors and takes appropriate actions
 func (r *router) watchErrors() {
 	var err error
 
 	select {
 	case <-r.exit:
+		return
 	case err = <-r.errChan:
 	}
 
 	r.Lock()
 	defer r.Unlock()
+	// if the router is not stopped, stop it
 	if r.status.Code != Stopped {
-		// notify all goroutines to finish
-		close(r.exit)
-
-		// drain the advertise channel only if advertising
-		if r.status.Code == Advertising {
-			// drain the event channel
-			for range r.eventChan {
-			}
+		// close all the channels
+		r.close()
+		// set the status error
+		if err != nil {
+			r.status.Error = err
 		}
-
-		// mark the router as Stopped and set its Error to nil
-		r.status = Status{Code: Stopped, Error: nil}
-	}
-
-	if err != nil {
-		r.status = Status{Code: Error, Error: err}
 	}
 }
 
-// Run runs the router.
-func (r *router) run() {
+// Start starts the router
+func (r *router) Start() error {
 	r.Lock()
 	defer r.Unlock()
 
-	switch r.status.Code {
-	case Stopped, Error:
-		// add all local service routes into the routing table
-		if err := r.manageRegistryRoutes(r.opts.Registry, "create"); err != nil {
-			r.status = Status{Code: Error, Error: fmt.Errorf("failed adding registry routes: %s", err)}
-			return
-		}
-
-		// add default gateway into routing table
-		if r.opts.Gateway != "" {
-			// note, the only non-default value is the gateway
-			route := Route{
-				Service: "*",
-				Address: "*",
-				Gateway: r.opts.Gateway,
-				Network: "*",
-				Metric:  DefaultLocalMetric,
-			}
-			if err := r.table.Create(route); err != nil {
-				r.status = Status{Code: Error, Error: fmt.Errorf("failed adding default gateway route: %s", err)}
-				return
-			}
-		}
-
-		// create error and exit channels
-		r.errChan = make(chan error, 1)
-		r.exit = make(chan struct{})
-
-		// registry watcher
-		regWatcher, err := r.opts.Registry.Watch()
-		if err != nil {
-			r.status = Status{Code: Error, Error: fmt.Errorf("failed creating registry watcher: %v", err)}
-			return
-		}
-
-		r.wg.Add(1)
-		go func() {
-			defer r.wg.Done()
-			select {
-			case r.errChan <- r.watchRegistry(regWatcher):
-			case <-r.exit:
-			}
-		}()
-
-		// watch for errors and cleanup
-		r.wg.Add(1)
-		go func() {
-			defer r.wg.Done()
-			r.watchErrors()
-		}()
-
-		// mark router as Running and set its Error to nil
-		r.status = Status{Code: Running, Error: nil}
-
-		return
+	// only start if we're stopped
+	if r.status.Code != Stopped {
+		return nil
 	}
 
-	return
+	// add all local service routes into the routing table
+	if err := r.manageRegistryRoutes(r.options.Registry, "create"); err != nil {
+		e := fmt.Errorf("failed adding registry routes: %s", err)
+		r.status = Status{Code: Error, Error: e}
+		return e
+	}
+
+	// add default gateway into routing table
+	if r.options.Gateway != "" {
+		// note, the only non-default value is the gateway
+		route := Route{
+			Service: "*",
+			Address: "*",
+			Gateway: r.options.Gateway,
+			Network: "*",
+			Router:  r.options.Id,
+			Link:    DefaultLink,
+			Metric:  DefaultLocalMetric,
+		}
+		if err := r.table.Create(route); err != nil {
+			e := fmt.Errorf("failed adding default gateway route: %s", err)
+			r.status = Status{Code: Error, Error: e}
+			return e
+		}
+	}
+
+	// create error and exit channels
+	r.errChan = make(chan error, 1)
+	r.exit = make(chan struct{})
+
+	// registry watcher
+	regWatcher, err := r.options.Registry.Watch()
+	if err != nil {
+		e := fmt.Errorf("failed creating registry watcher: %v", err)
+		r.status = Status{Code: Error, Error: e}
+		return e
+	}
+
+	r.wg.Add(1)
+	go func() {
+		defer r.wg.Done()
+		select {
+		case r.errChan <- r.watchRegistry(regWatcher):
+		case <-r.exit:
+		}
+	}()
+
+	// watch for errors and cleanup
+	r.wg.Add(1)
+	go func() {
+		defer r.wg.Done()
+		r.watchErrors()
+	}()
+
+	// mark router as Running
+	r.status = Status{Code: Running, Error: nil}
+
+	return nil
 }
 
 // Advertise stars advertising the routes to the network and returns the advertisements channel to consume from.
@@ -540,24 +603,14 @@ func (r *router) Advertise() (<-chan *Advert, error) {
 
 	switch r.status.Code {
 	case Advertising:
-		advertChan := make(chan *Advert)
+		advertChan := make(chan *Advert, 128)
 		r.subscribers[uuid.New().String()] = advertChan
 		return advertChan, nil
 	case Running:
-		// list routing table routes to announce
-		routes, err := r.table.List()
+		// list all the routes and pack them into even slice to advertise
+		events, err := r.flushRouteEvents(Create)
 		if err != nil {
-			return nil, fmt.Errorf("failed listing routes: %s", err)
-		}
-		// collect all the added routes before we attempt to add default gateway
-		events := make([]*Event, len(routes))
-		for i, route := range routes {
-			event := &Event{
-				Type:      Create,
-				Timestamp: time.Now(),
-				Route:     route,
-			}
-			events[i] = event
+			return nil, fmt.Errorf("failed to flush routes: %s", err)
 		}
 
 		// create event channels
@@ -590,7 +643,7 @@ func (r *router) Advertise() (<-chan *Advert, error) {
 		r.status = Status{Code: Advertising, Error: nil}
 
 		// create advert channel
-		advertChan := make(chan *Advert)
+		advertChan := make(chan *Advert, 128)
 		r.subscribers[uuid.New().String()] = advertChan
 
 		return advertChan, nil
@@ -613,6 +666,10 @@ func (r *router) Process(a *Advert) error {
 	})
 
 	for _, event := range events {
+		// skip if the router is the origin of this route
+		if event.Route.Router == r.options.Id {
+			continue
+		}
 		// create a copy of the route
 		route := event.Route
 		action := event.Type
@@ -624,10 +681,49 @@ func (r *router) Process(a *Advert) error {
 	return nil
 }
 
+// flushRouteEvents returns a slice of events, one per each route in the routing table
+func (r *router) flushRouteEvents(evType EventType) ([]*Event, error) {
+	// list all routes
+	routes, err := r.table.List()
+	if err != nil {
+		return nil, fmt.Errorf("failed listing routes: %s", err)
+	}
+
+	// build a list of events to advertise
+	events := make([]*Event, len(routes))
+	for i, route := range routes {
+		event := &Event{
+			Type:      evType,
+			Timestamp: time.Now(),
+			Route:     route,
+		}
+		events[i] = event
+	}
+
+	return events, nil
+}
+
+// Solicit advertises all of its routes to the network
+// It returns error if the router fails to list the routes
+func (r *router) Solicit() error {
+	events, err := r.flushRouteEvents(Update)
+	if err != nil {
+		return fmt.Errorf("failed solicit routes: %s", err)
+	}
+
+	// advertise the routes
+	r.advertWg.Add(1)
+	go r.publishAdvert(RouteUpdate, events)
+
+	return nil
+}
+
+// Lookup routes in the routing table
 func (r *router) Lookup(q Query) ([]Route, error) {
 	return r.table.Query(q)
 }
 
+// Watch routes
 func (r *router) Watch(opts ...WatchOption) (Watcher, error) {
 	return r.table.Watch(opts...)
 }
@@ -646,31 +742,15 @@ func (r *router) Status() Status {
 // Stop stops the router
 func (r *router) Stop() error {
 	r.Lock()
-	// only close the channel if the router is running and/or advertising
-	if r.status.Code == Running || r.status.Code == Advertising {
-		// notify all goroutines to finish
-		close(r.exit)
+	defer r.Unlock()
 
-		// drain the advertise channel only if advertising
-		if r.status.Code == Advertising {
-			// drain the event channel
-			for range r.eventChan {
-			}
-		}
-
-		// close advert subscribers
-		for id, sub := range r.subscribers {
-			// close the channel
-			close(sub)
-
-			// delete the subscriber
-			delete(r.subscribers, id)
-		}
-
-		// mark the router as Stopped and set its Error to nil
-		r.status = Status{Code: Stopped, Error: nil}
+	switch r.status.Code {
+	case Stopped, Error:
+		return r.status.Error
+	case Running, Advertising:
+		// close all the channels
+		r.close()
 	}
-	r.Unlock()
 
 	// wait for all goroutines to finish
 	r.wg.Wait()
@@ -680,5 +760,5 @@ func (r *router) Stop() error {
 
 // String prints debugging information about router
 func (r *router) String() string {
-	return "default"
+	return "memory"
 }

router/handler/router.go

@@ -0,0 +1,184 @@
+package handler
+
+import (
+	"context"
+	"io"
+	"time"
+
+	"github.com/micro/go-micro/errors"
+	"github.com/micro/go-micro/router"
+	pb "github.com/micro/go-micro/router/proto"
+)
+
+// Router implements router handler
+type Router struct {
+	Router router.Router
+}
+
+// Lookup looks up routes in the routing table and returns them
+func (r *Router) Lookup(ctx context.Context, req *pb.LookupRequest, resp *pb.LookupResponse) error {
+	query := router.NewQuery(
+		router.QueryService(req.Query.Service),
+	)
+
+	routes, err := r.Router.Lookup(query)
+	if err != nil {
+		return errors.InternalServerError("go.micro.router", "failed to lookup routes: %v", err)
+	}
+
+	var respRoutes []*pb.Route
+	for _, route := range routes {
+		respRoute := &pb.Route{
+			Service: route.Service,
+			Address: route.Address,
+			Gateway: route.Gateway,
+			Network: route.Network,
+			Router:  route.Router,
+			Link:    route.Link,
+			Metric:  int64(route.Metric),
+		}
+		respRoutes = append(respRoutes, respRoute)
+	}
+
+	resp.Routes = respRoutes
+
+	return nil
+}
+
+func (r *Router) Advertise(ctx context.Context, req *pb.Request, stream pb.Router_AdvertiseStream) error {
+	advertChan, err := r.Router.Advertise()
+	if err != nil {
+		return errors.InternalServerError("go.micro.router", "failed to get adverts: %v", err)
+	}
+
+	for advert := range advertChan {
+		var events []*pb.Event
+		for _, event := range advert.Events {
+			route := &pb.Route{
+				Service: event.Route.Service,
+				Address: event.Route.Address,
+				Gateway: event.Route.Gateway,
+				Network: event.Route.Network,
+				Router:  event.Route.Router,
+				Link:    event.Route.Link,
+				Metric:  int64(event.Route.Metric),
+			}
+			e := &pb.Event{
+				Type:      pb.EventType(event.Type),
+				Timestamp: event.Timestamp.UnixNano(),
+				Route:     route,
+			}
+			events = append(events, e)
+		}
+
+		advert := &pb.Advert{
+			Id:        advert.Id,
+			Type:      pb.AdvertType(advert.Type),
+			Timestamp: advert.Timestamp.UnixNano(),
+			Events:    events,
+		}
+
+		// send the advert
+		err := stream.Send(advert)
+		if err == io.EOF {
+			return nil
+		}
+		if err != nil {
+			return errors.InternalServerError("go.micro.router", "error sending message %v", err)
+		}
+	}
+
+	return nil
+}
+
+func (r *Router) Process(ctx context.Context, req *pb.Advert, rsp *pb.ProcessResponse) error {
+	events := make([]*router.Event, len(req.Events))
+	for i, event := range req.Events {
+		route := router.Route{
+			Service: event.Route.Service,
+			Address: event.Route.Address,
+			Gateway: event.Route.Gateway,
+			Network: event.Route.Network,
+			Router:  event.Route.Router,
+			Link:    event.Route.Link,
+			Metric:  int(event.Route.Metric),
+		}
+
+		events[i] = &router.Event{
+			Type:      router.EventType(event.Type),
+			Timestamp: time.Unix(0, event.Timestamp),
+			Route:     route,
+		}
+	}
+
+	advert := &router.Advert{
+		Id:        req.Id,
+		Type:      router.AdvertType(req.Type),
+		Timestamp: time.Unix(0, req.Timestamp),
+		TTL:       time.Duration(req.Ttl),
+		Events:    events,
+	}
+
+	if err := r.Router.Process(advert); err != nil {
+		return errors.InternalServerError("go.micro.router", "error publishing advert: %v", err)
+	}
+
+	return nil
+}
+
+func (r *Router) Status(ctx context.Context, req *pb.Request, rsp *pb.StatusResponse) error {
+	status := r.Router.Status()
+
+	rsp.Status = &pb.Status{
+		Code: status.Code.String(),
+	}
+
+	if status.Error != nil {
+		rsp.Status.Error = status.Error.Error()
+	}
+
+	return nil
+}
+
+// Watch streans routing table events
+func (r *Router) Watch(ctx context.Context, req *pb.WatchRequest, stream pb.Router_WatchStream) error {
+	watcher, err := r.Router.Watch()
+	if err != nil {
+		return errors.InternalServerError("go.micro.router", "failed creating event watcher: %v", err)
+	}
+
+	defer stream.Close()
+
+	for {
+		event, err := watcher.Next()
+		if err == router.ErrWatcherStopped {
+			break
+		}
+
+		if err != nil {
+			return errors.InternalServerError("go.micro.router", "error watching events: %v", err)
+		}
+
+		route := &pb.Route{
+			Service: event.Route.Service,
+			Address: event.Route.Address,
+			Gateway: event.Route.Gateway,
+			Network: event.Route.Network,
+			Router:  event.Route.Router,
+			Link:    event.Route.Link,
+			Metric:  int64(event.Route.Metric),
+		}
+
+		tableEvent := &pb.Event{
+			Type:      pb.EventType(event.Type),
+			Timestamp: event.Timestamp.UnixNano(),
+			Route:     route,
+		}
+
+		if err := stream.Send(tableEvent); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

router/handler/table.go

@@ -0,0 +1,119 @@
+package handler
+
+import (
+	"context"
+
+	"github.com/micro/go-micro/errors"
+	"github.com/micro/go-micro/router"
+	pb "github.com/micro/go-micro/router/proto"
+)
+
+type Table struct {
+	Router router.Router
+}
+
+func (t *Table) Create(ctx context.Context, route *pb.Route, resp *pb.CreateResponse) error {
+	err := t.Router.Table().Create(router.Route{
+		Service: route.Service,
+		Address: route.Address,
+		Gateway: route.Gateway,
+		Network: route.Network,
+		Router:  route.Router,
+		Link:    route.Link,
+		Metric:  int(route.Metric),
+	})
+	if err != nil {
+		return errors.InternalServerError("go.micro.router", "failed to create route: %s", err)
+	}
+
+	return nil
+}
+
+func (t *Table) Update(ctx context.Context, route *pb.Route, resp *pb.UpdateResponse) error {
+	err := t.Router.Table().Update(router.Route{
+		Service: route.Service,
+		Address: route.Address,
+		Gateway: route.Gateway,
+		Network: route.Network,
+		Router:  route.Router,
+		Link:    route.Link,
+		Metric:  int(route.Metric),
+	})
+	if err != nil {
+		return errors.InternalServerError("go.micro.router", "failed to update route: %s", err)
+	}
+
+	return nil
+}
+
+func (t *Table) Delete(ctx context.Context, route *pb.Route, resp *pb.DeleteResponse) error {
+	err := t.Router.Table().Delete(router.Route{
+		Service: route.Service,
+		Address: route.Address,
+		Gateway: route.Gateway,
+		Network: route.Network,
+		Router:  route.Router,
+		Link:    route.Link,
+		Metric:  int(route.Metric),
+	})
+	if err != nil {
+		return errors.InternalServerError("go.micro.router", "failed to delete route: %s", err)
+	}
+
+	return nil
+}
+
+// List returns all routes in the routing table
+func (t *Table) List(ctx context.Context, req *pb.Request, resp *pb.ListResponse) error {
+	routes, err := t.Router.Table().List()
+	if err != nil {
+		return errors.InternalServerError("go.micro.router", "failed to list routes: %s", err)
+	}
+
+	var respRoutes []*pb.Route
+	for _, route := range routes {
+		respRoute := &pb.Route{
+			Service: route.Service,
+			Address: route.Address,
+			Gateway: route.Gateway,
+			Network: route.Network,
+			Router:  route.Router,
+			Link:    route.Link,
+			Metric:  int64(route.Metric),
+		}
+		respRoutes = append(respRoutes, respRoute)
+	}
+
+	resp.Routes = respRoutes
+
+	return nil
+}
+
+func (t *Table) Query(ctx context.Context, req *pb.QueryRequest, resp *pb.QueryResponse) error {
+	query := router.NewQuery(
+		router.QueryService(req.Query.Service),
+	)
+
+	routes, err := t.Router.Table().Query(query)
+	if err != nil {
+		return errors.InternalServerError("go.micro.router", "failed to lookup routes: %s", err)
+	}
+
+	var respRoutes []*pb.Route
+	for _, route := range routes {
+		respRoute := &pb.Route{
+			Service: route.Service,
+			Address: route.Address,
+			Gateway: route.Gateway,
+			Network: route.Network,
+			Router:  route.Router,
+			Link:    route.Link,
+			Metric:  int64(route.Metric),
+		}
+		respRoutes = append(respRoutes, respRoute)
+	}
+
+	resp.Routes = respRoutes
+
+	return nil
+}

router/proto/router.micro.go

@@ -1,5 +1,5 @@
 // Code generated by protoc-gen-micro. DO NOT EDIT.
-// source: go-micro/network/router/proto/router.proto
+// source: micro/go-micro/router/proto/router.proto
 
 package go_micro_router
 
@@ -36,7 +36,7 @@ var _ server.Option
 type RouterService interface {
 	Lookup(ctx context.Context, in *LookupRequest, opts ...client.CallOption) (*LookupResponse, error)
 	Watch(ctx context.Context, in *WatchRequest, opts ...client.CallOption) (Router_WatchService, error)
-	Advertise(ctx context.Context, in *AdvertiseRequest, opts ...client.CallOption) (Router_AdvertiseService, error)
+	Advertise(ctx context.Context, in *Request, opts ...client.CallOption) (Router_AdvertiseService, error)
 	Process(ctx context.Context, in *Advert, opts ...client.CallOption) (*ProcessResponse, error)
 	Status(ctx context.Context, in *Request, opts ...client.CallOption) (*StatusResponse, error)
 }
@@ -113,8 +113,8 @@ func (x *routerServiceWatch) Recv() (*Event, error) {
 	return m, nil
 }
 
-func (c *routerService) Advertise(ctx context.Context, in *AdvertiseRequest, opts ...client.CallOption) (Router_AdvertiseService, error) {
-	req := c.c.NewRequest(c.name, "Router.Advertise", &AdvertiseRequest{})
+func (c *routerService) Advertise(ctx context.Context, in *Request, opts ...client.CallOption) (Router_AdvertiseService, error) {
+	req := c.c.NewRequest(c.name, "Router.Advertise", &Request{})
 	stream, err := c.c.Stream(ctx, req, opts...)
 	if err != nil {
 		return nil, err
@@ -182,7 +182,7 @@ func (c *routerService) Status(ctx context.Context, in *Request, opts ...client.
 type RouterHandler interface {
 	Lookup(context.Context, *LookupRequest, *LookupResponse) error
 	Watch(context.Context, *WatchRequest, Router_WatchStream) error
-	Advertise(context.Context, *AdvertiseRequest, Router_AdvertiseStream) error
+	Advertise(context.Context, *Request, Router_AdvertiseStream) error
 	Process(context.Context, *Advert, *ProcessResponse) error
 	Status(context.Context, *Request, *StatusResponse) error
 }
@@ -246,7 +246,7 @@ func (x *routerWatchStream) Send(m *Event) error {
 }
 
 func (h *routerHandler) Advertise(ctx context.Context, stream server.Stream) error {
-	m := new(AdvertiseRequest)
+	m := new(Request)
 	if err := stream.Recv(m); err != nil {
 		return err
 	}
@@ -294,8 +294,8 @@ type TableService interface {
 	Create(ctx context.Context, in *Route, opts ...client.CallOption) (*CreateResponse, error)
 	Delete(ctx context.Context, in *Route, opts ...client.CallOption) (*DeleteResponse, error)
 	Update(ctx context.Context, in *Route, opts ...client.CallOption) (*UpdateResponse, error)
-	Query(ctx context.Context, in *QueryRequest, opts ...client.CallOption) (*QueryResponse, error)
 	List(ctx context.Context, in *Request, opts ...client.CallOption) (*ListResponse, error)
+	Query(ctx context.Context, in *QueryRequest, opts ...client.CallOption) (*QueryResponse, error)
 }
 
 type tableService struct {
@@ -346,9 +346,9 @@ func (c *tableService) Update(ctx context.Context, in *Route, opts ...client.Cal
 	return out, nil
 }
 
-func (c *tableService) Query(ctx context.Context, in *QueryRequest, opts ...client.CallOption) (*QueryResponse, error) {
-	req := c.c.NewRequest(c.name, "Table.Query", in)
-	out := new(QueryResponse)
+func (c *tableService) List(ctx context.Context, in *Request, opts ...client.CallOption) (*ListResponse, error) {
+	req := c.c.NewRequest(c.name, "Table.List", in)
+	out := new(ListResponse)
 	err := c.c.Call(ctx, req, out, opts...)
 	if err != nil {
 		return nil, err
@@ -356,9 +356,9 @@ func (c *tableService) Query(ctx context.Context, in *QueryRequest, opts ...clie
 	return out, nil
 }
 
-func (c *tableService) List(ctx context.Context, in *Request, opts ...client.CallOption) (*ListResponse, error) {
-	req := c.c.NewRequest(c.name, "Table.List", in)
-	out := new(ListResponse)
+func (c *tableService) Query(ctx context.Context, in *QueryRequest, opts ...client.CallOption) (*QueryResponse, error) {
+	req := c.c.NewRequest(c.name, "Table.Query", in)
+	out := new(QueryResponse)
 	err := c.c.Call(ctx, req, out, opts...)
 	if err != nil {
 		return nil, err
@@ -372,8 +372,8 @@ type TableHandler interface {
 	Create(context.Context, *Route, *CreateResponse) error
 	Delete(context.Context, *Route, *DeleteResponse) error
 	Update(context.Context, *Route, *UpdateResponse) error
-	Query(context.Context, *QueryRequest, *QueryResponse) error
 	List(context.Context, *Request, *ListResponse) error
+	Query(context.Context, *QueryRequest, *QueryResponse) error
 }
 
 func RegisterTableHandler(s server.Server, hdlr TableHandler, opts ...server.HandlerOption) error {
@@ -381,8 +381,8 @@ func RegisterTableHandler(s server.Server, hdlr TableHandler, opts ...server.Han
 		Create(ctx context.Context, in *Route, out *CreateResponse) error
 		Delete(ctx context.Context, in *Route, out *DeleteResponse) error
 		Update(ctx context.Context, in *Route, out *UpdateResponse) error
-		Query(ctx context.Context, in *QueryRequest, out *QueryResponse) error
 		List(ctx context.Context, in *Request, out *ListResponse) error
+		Query(ctx context.Context, in *QueryRequest, out *QueryResponse) error
 	}
 	type Table struct {
 		table
@@ -407,10 +407,10 @@ func (h *tableHandler) Update(ctx context.Context, in *Route, out *UpdateRespons
 	return h.TableHandler.Update(ctx, in, out)
 }
 
-func (h *tableHandler) Query(ctx context.Context, in *QueryRequest, out *QueryResponse) error {
-	return h.TableHandler.Query(ctx, in, out)
-}
-
 func (h *tableHandler) List(ctx context.Context, in *Request, out *ListResponse) error {
 	return h.TableHandler.List(ctx, in, out)
 }
+
+func (h *tableHandler) Query(ctx context.Context, in *QueryRequest, out *QueryResponse) error {
+	return h.TableHandler.Query(ctx, in, out)
+}

router/proto/router.pb.go

@@ -1,5 +1,5 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
-// source: go-micro/network/router/proto/router.proto
+// source: micro/go-micro/router/proto/router.proto
 
 package go_micro_router
 
@@ -45,7 +45,7 @@ func (x AdvertType) String() string {
 }
 
 func (AdvertType) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{0}
+	return fileDescriptor_6a36eee0b1adf739, []int{0}
 }
 
 // EventType defines the type of event
@@ -74,7 +74,7 @@ func (x EventType) String() string {
 }
 
 func (EventType) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{1}
+	return fileDescriptor_6a36eee0b1adf739, []int{1}
 }
 
 // Empty request
@@ -88,7 +88,7 @@ func (m *Request) Reset()         { *m = Request{} }
 func (m *Request) String() string { return proto.CompactTextString(m) }
 func (*Request) ProtoMessage()    {}
 func (*Request) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{0}
+	return fileDescriptor_6a36eee0b1adf739, []int{0}
 }
 
 func (m *Request) XXX_Unmarshal(b []byte) error {
@@ -121,7 +121,7 @@ func (m *ListResponse) Reset()         { *m = ListResponse{} }
 func (m *ListResponse) String() string { return proto.CompactTextString(m) }
 func (*ListResponse) ProtoMessage()    {}
 func (*ListResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{1}
+	return fileDescriptor_6a36eee0b1adf739, []int{1}
 }
 
 func (m *ListResponse) XXX_Unmarshal(b []byte) error {
@@ -161,7 +161,7 @@ func (m *LookupRequest) Reset()         { *m = LookupRequest{} }
 func (m *LookupRequest) String() string { return proto.CompactTextString(m) }
 func (*LookupRequest) ProtoMessage()    {}
 func (*LookupRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{2}
+	return fileDescriptor_6a36eee0b1adf739, []int{2}
 }
 
 func (m *LookupRequest) XXX_Unmarshal(b []byte) error {
@@ -201,7 +201,7 @@ func (m *LookupResponse) Reset()         { *m = LookupResponse{} }
 func (m *LookupResponse) String() string { return proto.CompactTextString(m) }
 func (*LookupResponse) ProtoMessage()    {}
 func (*LookupResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{3}
+	return fileDescriptor_6a36eee0b1adf739, []int{3}
 }
 
 func (m *LookupResponse) XXX_Unmarshal(b []byte) error {
@@ -240,7 +240,7 @@ func (m *QueryRequest) Reset()         { *m = QueryRequest{} }
 func (m *QueryRequest) String() string { return proto.CompactTextString(m) }
 func (*QueryRequest) ProtoMessage()    {}
 func (*QueryRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{4}
+	return fileDescriptor_6a36eee0b1adf739, []int{4}
 }
 
 func (m *QueryRequest) XXX_Unmarshal(b []byte) error {
@@ -279,7 +279,7 @@ func (m *QueryResponse) Reset()         { *m = QueryResponse{} }
 func (m *QueryResponse) String() string { return proto.CompactTextString(m) }
 func (*QueryResponse) ProtoMessage()    {}
 func (*QueryResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{5}
+	return fileDescriptor_6a36eee0b1adf739, []int{5}
 }
 
 func (m *QueryResponse) XXX_Unmarshal(b []byte) error {
@@ -318,7 +318,7 @@ func (m *WatchRequest) Reset()         { *m = WatchRequest{} }
 func (m *WatchRequest) String() string { return proto.CompactTextString(m) }
 func (*WatchRequest) ProtoMessage()    {}
 func (*WatchRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{6}
+	return fileDescriptor_6a36eee0b1adf739, []int{6}
 }
 
 func (m *WatchRequest) XXX_Unmarshal(b []byte) error {
@@ -339,38 +339,6 @@ func (m *WatchRequest) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_WatchRequest proto.InternalMessageInfo
 
-// AdvertiseRequest request a stream of Adverts
-type AdvertiseRequest struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *AdvertiseRequest) Reset()         { *m = AdvertiseRequest{} }
-func (m *AdvertiseRequest) String() string { return proto.CompactTextString(m) }
-func (*AdvertiseRequest) ProtoMessage()    {}
-func (*AdvertiseRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{7}
-}
-
-func (m *AdvertiseRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_AdvertiseRequest.Unmarshal(m, b)
-}
-func (m *AdvertiseRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_AdvertiseRequest.Marshal(b, m, deterministic)
-}
-func (m *AdvertiseRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_AdvertiseRequest.Merge(m, src)
-}
-func (m *AdvertiseRequest) XXX_Size() int {
-	return xxx_messageInfo_AdvertiseRequest.Size(m)
-}
-func (m *AdvertiseRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_AdvertiseRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_AdvertiseRequest proto.InternalMessageInfo
-
 // Advert is router advertsement streamed by Watch
 type Advert struct {
 	// id of the advertising router
@@ -392,7 +360,7 @@ func (m *Advert) Reset()         { *m = Advert{} }
 func (m *Advert) String() string { return proto.CompactTextString(m) }
 func (*Advert) ProtoMessage()    {}
 func (*Advert) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{8}
+	return fileDescriptor_6a36eee0b1adf739, []int{7}
 }
 
 func (m *Advert) XXX_Unmarshal(b []byte) error {
@@ -459,7 +427,7 @@ func (m *ProcessResponse) Reset()         { *m = ProcessResponse{} }
 func (m *ProcessResponse) String() string { return proto.CompactTextString(m) }
 func (*ProcessResponse) ProtoMessage()    {}
 func (*ProcessResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{9}
+	return fileDescriptor_6a36eee0b1adf739, []int{8}
 }
 
 func (m *ProcessResponse) XXX_Unmarshal(b []byte) error {
@@ -491,7 +459,7 @@ func (m *CreateResponse) Reset()         { *m = CreateResponse{} }
 func (m *CreateResponse) String() string { return proto.CompactTextString(m) }
 func (*CreateResponse) ProtoMessage()    {}
 func (*CreateResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{10}
+	return fileDescriptor_6a36eee0b1adf739, []int{9}
 }
 
 func (m *CreateResponse) XXX_Unmarshal(b []byte) error {
@@ -523,7 +491,7 @@ func (m *DeleteResponse) Reset()         { *m = DeleteResponse{} }
 func (m *DeleteResponse) String() string { return proto.CompactTextString(m) }
 func (*DeleteResponse) ProtoMessage()    {}
 func (*DeleteResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{11}
+	return fileDescriptor_6a36eee0b1adf739, []int{10}
 }
 
 func (m *DeleteResponse) XXX_Unmarshal(b []byte) error {
@@ -555,7 +523,7 @@ func (m *UpdateResponse) Reset()         { *m = UpdateResponse{} }
 func (m *UpdateResponse) String() string { return proto.CompactTextString(m) }
 func (*UpdateResponse) ProtoMessage()    {}
 func (*UpdateResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{12}
+	return fileDescriptor_6a36eee0b1adf739, []int{11}
 }
 
 func (m *UpdateResponse) XXX_Unmarshal(b []byte) error {
@@ -593,7 +561,7 @@ func (m *Event) Reset()         { *m = Event{} }
 func (m *Event) String() string { return proto.CompactTextString(m) }
 func (*Event) ProtoMessage()    {}
 func (*Event) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{13}
+	return fileDescriptor_6a36eee0b1adf739, []int{12}
 }
 
 func (m *Event) XXX_Unmarshal(b []byte) error {
@@ -652,7 +620,7 @@ func (m *Query) Reset()         { *m = Query{} }
 func (m *Query) String() string { return proto.CompactTextString(m) }
 func (*Query) ProtoMessage()    {}
 func (*Query) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{14}
+	return fileDescriptor_6a36eee0b1adf739, []int{13}
 }
 
 func (m *Query) XXX_Unmarshal(b []byte) error {
@@ -704,10 +672,12 @@ type Route struct {
 	Gateway string `protobuf:"bytes,3,opt,name=gateway,proto3" json:"gateway,omitempty"`
 	// the network for this destination
 	Network string `protobuf:"bytes,4,opt,name=network,proto3" json:"network,omitempty"`
+	// router if the router id
+	Router string `protobuf:"bytes,5,opt,name=router,proto3" json:"router,omitempty"`
 	// the network link
-	Link string `protobuf:"bytes,5,opt,name=link,proto3" json:"link,omitempty"`
+	Link string `protobuf:"bytes,6,opt,name=link,proto3" json:"link,omitempty"`
 	// the metric / score of this route
-	Metric               int64    `protobuf:"varint,6,opt,name=metric,proto3" json:"metric,omitempty"`
+	Metric               int64    `protobuf:"varint,7,opt,name=metric,proto3" json:"metric,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -717,7 +687,7 @@ func (m *Route) Reset()         { *m = Route{} }
 func (m *Route) String() string { return proto.CompactTextString(m) }
 func (*Route) ProtoMessage()    {}
 func (*Route) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{15}
+	return fileDescriptor_6a36eee0b1adf739, []int{14}
 }
 
 func (m *Route) XXX_Unmarshal(b []byte) error {
@@ -766,6 +736,13 @@ func (m *Route) GetNetwork() string {
 	return ""
 }
 
+func (m *Route) GetRouter() string {
+	if m != nil {
+		return m.Router
+	}
+	return ""
+}
+
 func (m *Route) GetLink() string {
 	if m != nil {
 		return m.Link
@@ -792,7 +769,7 @@ func (m *Status) Reset()         { *m = Status{} }
 func (m *Status) String() string { return proto.CompactTextString(m) }
 func (*Status) ProtoMessage()    {}
 func (*Status) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{16}
+	return fileDescriptor_6a36eee0b1adf739, []int{15}
 }
 
 func (m *Status) XXX_Unmarshal(b []byte) error {
@@ -838,7 +815,7 @@ func (m *StatusResponse) Reset()         { *m = StatusResponse{} }
 func (m *StatusResponse) String() string { return proto.CompactTextString(m) }
 func (*StatusResponse) ProtoMessage()    {}
 func (*StatusResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_fc08514fc6dadd29, []int{17}
+	return fileDescriptor_6a36eee0b1adf739, []int{16}
 }
 
 func (m *StatusResponse) XXX_Unmarshal(b []byte) error {
@@ -876,7 +853,6 @@ func init() {
 	proto.RegisterType((*QueryRequest)(nil), "go.micro.router.QueryRequest")
 	proto.RegisterType((*QueryResponse)(nil), "go.micro.router.QueryResponse")
 	proto.RegisterType((*WatchRequest)(nil), "go.micro.router.WatchRequest")
-	proto.RegisterType((*AdvertiseRequest)(nil), "go.micro.router.AdvertiseRequest")
 	proto.RegisterType((*Advert)(nil), "go.micro.router.Advert")
 	proto.RegisterType((*ProcessResponse)(nil), "go.micro.router.ProcessResponse")
 	proto.RegisterType((*CreateResponse)(nil), "go.micro.router.CreateResponse")
@@ -890,55 +866,55 @@ func init() {
 }
 
 func init() {
-	proto.RegisterFile("go-micro/network/router/proto/router.proto", fileDescriptor_fc08514fc6dadd29)
+	proto.RegisterFile("micro/go-micro/router/proto/router.proto", fileDescriptor_6a36eee0b1adf739)
 }
 
-var fileDescriptor_fc08514fc6dadd29 = []byte{
-	// 702 bytes of a gzipped FileDescriptorProto
+var fileDescriptor_6a36eee0b1adf739 = []byte{
+	// 699 bytes of a gzipped FileDescriptorProto
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 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -955,7 +931,7 @@ const _ = grpc.SupportPackageIsVersion4
 type RouterClient interface {
 	Lookup(ctx context.Context, in *LookupRequest, opts ...grpc.CallOption) (*LookupResponse, error)
 	Watch(ctx context.Context, in *WatchRequest, opts ...grpc.CallOption) (Router_WatchClient, error)
-	Advertise(ctx context.Context, in *AdvertiseRequest, opts ...grpc.CallOption) (Router_AdvertiseClient, error)
+	Advertise(ctx context.Context, in *Request, opts ...grpc.CallOption) (Router_AdvertiseClient, error)
 	Process(ctx context.Context, in *Advert, opts ...grpc.CallOption) (*ProcessResponse, error)
 	Status(ctx context.Context, in *Request, opts ...grpc.CallOption) (*StatusResponse, error)
 }
@@ -1009,7 +985,7 @@ func (x *routerWatchClient) Recv() (*Event, error) {
 	return m, nil
 }
 
-func (c *routerClient) Advertise(ctx context.Context, in *AdvertiseRequest, opts ...grpc.CallOption) (Router_AdvertiseClient, error) {
+func (c *routerClient) Advertise(ctx context.Context, in *Request, opts ...grpc.CallOption) (Router_AdvertiseClient, error) {
 	stream, err := c.cc.NewStream(ctx, &_Router_serviceDesc.Streams[1], "/go.micro.router.Router/Advertise", opts...)
 	if err != nil {
 		return nil, err
@@ -1063,7 +1039,7 @@ func (c *routerClient) Status(ctx context.Context, in *Request, opts ...grpc.Cal
 type RouterServer interface {
 	Lookup(context.Context, *LookupRequest) (*LookupResponse, error)
 	Watch(*WatchRequest, Router_WatchServer) error
-	Advertise(*AdvertiseRequest, Router_AdvertiseServer) error
+	Advertise(*Request, Router_AdvertiseServer) error
 	Process(context.Context, *Advert) (*ProcessResponse, error)
 	Status(context.Context, *Request) (*StatusResponse, error)
 }
@@ -1112,7 +1088,7 @@ func (x *routerWatchServer) Send(m *Event) error {
 }
 
 func _Router_Advertise_Handler(srv interface{}, stream grpc.ServerStream) error {
-	m := new(AdvertiseRequest)
+	m := new(Request)
 	if err := stream.RecvMsg(m); err != nil {
 		return err
 	}
@@ -1197,7 +1173,7 @@ var _Router_serviceDesc = grpc.ServiceDesc{
 			ServerStreams: true,
 		},
 	},
-	Metadata: "go-micro/network/router/proto/router.proto",
+	Metadata: "micro/go-micro/router/proto/router.proto",
 }
 
 // TableClient is the client API for Table service.
@@ -1207,8 +1183,8 @@ type TableClient interface {
 	Create(ctx context.Context, in *Route, opts ...grpc.CallOption) (*CreateResponse, error)
 	Delete(ctx context.Context, in *Route, opts ...grpc.CallOption) (*DeleteResponse, error)
 	Update(ctx context.Context, in *Route, opts ...grpc.CallOption) (*UpdateResponse, error)
-	Query(ctx context.Context, in *QueryRequest, opts ...grpc.CallOption) (*QueryResponse, error)
 	List(ctx context.Context, in *Request, opts ...grpc.CallOption) (*ListResponse, error)
+	Query(ctx context.Context, in *QueryRequest, opts ...grpc.CallOption) (*QueryResponse, error)
 }
 
 type tableClient struct {
@@ -1246,18 +1222,18 @@ func (c *tableClient) Update(ctx context.Context, in *Route, opts ...grpc.CallOp
 	return out, nil
 }
 
-func (c *tableClient) Query(ctx context.Context, in *QueryRequest, opts ...grpc.CallOption) (*QueryResponse, error) {
-	out := new(QueryResponse)
-	err := c.cc.Invoke(ctx, "/go.micro.router.Table/Query", in, out, opts...)
+func (c *tableClient) List(ctx context.Context, in *Request, opts ...grpc.CallOption) (*ListResponse, error) {
+	out := new(ListResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.router.Table/List", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-func (c *tableClient) List(ctx context.Context, in *Request, opts ...grpc.CallOption) (*ListResponse, error) {
-	out := new(ListResponse)
-	err := c.cc.Invoke(ctx, "/go.micro.router.Table/List", in, out, opts...)
+func (c *tableClient) Query(ctx context.Context, in *QueryRequest, opts ...grpc.CallOption) (*QueryResponse, error) {
+	out := new(QueryResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.router.Table/Query", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -1269,8 +1245,8 @@ type TableServer interface {
 	Create(context.Context, *Route) (*CreateResponse, error)
 	Delete(context.Context, *Route) (*DeleteResponse, error)
 	Update(context.Context, *Route) (*UpdateResponse, error)
-	Query(context.Context, *QueryRequest) (*QueryResponse, error)
 	List(context.Context, *Request) (*ListResponse, error)
+	Query(context.Context, *QueryRequest) (*QueryResponse, error)
 }
 
 func RegisterTableServer(s *grpc.Server, srv TableServer) {
@@ -1331,24 +1307,6 @@ func _Table_Update_Handler(srv interface{}, ctx context.Context, dec func(interf
 	return interceptor(ctx, in, info, handler)
 }
 
-func _Table_Query_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(QueryRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(TableServer).Query(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/go.micro.router.Table/Query",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TableServer).Query(ctx, req.(*QueryRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
 func _Table_List_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(Request)
 	if err := dec(in); err != nil {
@@ -1367,6 +1325,24 @@ func _Table_List_Handler(srv interface{}, ctx context.Context, dec func(interfac
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Table_Query_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(QueryRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(TableServer).Query(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.router.Table/Query",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(TableServer).Query(ctx, req.(*QueryRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Table_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "go.micro.router.Table",
 	HandlerType: (*TableServer)(nil),
@@ -1383,15 +1359,15 @@ var _Table_serviceDesc = grpc.ServiceDesc{
 			MethodName: "Update",
 			Handler:    _Table_Update_Handler,
 		},
-		{
-			MethodName: "Query",
-			Handler:    _Table_Query_Handler,
-		},
 		{
 			MethodName: "List",
 			Handler:    _Table_List_Handler,
 		},
+		{
+			MethodName: "Query",
+			Handler:    _Table_Query_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "go-micro/network/router/proto/router.proto",
+	Metadata: "micro/go-micro/router/proto/router.proto",
 }

router/proto/router.proto

@@ -7,11 +7,12 @@ service Router {
 	rpc Lookup(LookupRequest) returns (LookupResponse) {};
         rpc Watch(WatchRequest) returns (stream Event) {};
         rpc Advertise(Request) returns (stream Advert) {};
+        rpc Solicit(Request) returns (Response) {};
         rpc Process(Advert) returns (ProcessResponse) {};
 	rpc Status(Request) returns (StatusResponse) {};
 }
 
-service Table {     
+service Table {
 	rpc Create(Route) returns (CreateResponse) {};
         rpc Delete(Route) returns (DeleteResponse) {};
         rpc Update(Route) returns (UpdateResponse) {};
@@ -22,6 +23,9 @@ service Table {
 // Empty request
 message Request {}
 
+// Empty response
+message Response {}
+
 // ListResponse is returned by List
 message ListResponse {
 	repeated Route routes = 1;
@@ -37,10 +41,12 @@ message LookupResponse {
 	repeated Route routes = 1;
 }
 
+// QueryRequest queries Table for Routes
 message QueryRequest{
 	Query query = 1;
 }
 
+// QueryResponse is returned by Query
 message QueryResponse {
 	repeated Route routes = 1;
 }
@@ -117,10 +123,12 @@ message Route {
 	string gateway = 3;
 	// the network for this destination
 	string network = 4;
+	// router if the router id
+	string router = 5;
 	// the network link
-	string link = 5;
+	string link = 6;
 	// the metric / score of this route
-	int64 metric = 6;
+	int64 metric = 7;
 }
 
 message Status {

router/query.go

@@ -11,29 +11,38 @@ type QueryOptions struct {
 	Gateway string
 	// Network is network address
 	Network string
+	// Router is router id
+	Router string
 }
 
-// QueryService sets destination address
+// QueryService sets service to query
 func QueryService(s string) QueryOption {
 	return func(o *QueryOptions) {
 		o.Service = s
 	}
 }
 
-// QueryGateway sets route gateway
+// QueryGateway sets gateway address to query
 func QueryGateway(g string) QueryOption {
 	return func(o *QueryOptions) {
 		o.Gateway = g
 	}
 }
 
-// QueryNetwork sets route network address
+// QueryNetwork sets network name to query
 func QueryNetwork(n string) QueryOption {
 	return func(o *QueryOptions) {
 		o.Network = n
 	}
 }
 
+// QueryRouter sets router id to query
+func QueryRouter(r string) QueryOption {
+	return func(o *QueryOptions) {
+		o.Router = r
+	}
+}
+
 // Query is routing table query
 type Query interface {
 	// Options returns query options
@@ -52,6 +61,7 @@ func NewQuery(opts ...QueryOption) Query {
 		Service: "*",
 		Gateway: "*",
 		Network: "*",
+		Router:  "*",
 	}
 
 	for _, o := range opts {
@@ -67,8 +77,3 @@ func NewQuery(opts ...QueryOption) Query {
 func (q *query) Options() QueryOptions {
 	return q.opts
 }
-
-// String prints routing table query in human readable form
-func (q query) String() string {
-	return "query"
-}

router/route.go

@@ -7,9 +7,9 @@ import (
 var (
 	// DefaultLink is default network link
 	DefaultLink = "local"
-	// DefaultLocalMetric is default route cost metric for the local network
+	// DefaultLocalMetric is default route cost for a local route
 	DefaultLocalMetric = 1
-	// DefaultNetworkMetric is default route cost metric for the micro network
+	// DefaultNetworkMetric is default route cost for a network route
 	DefaultNetworkMetric = 10
 )
 
@@ -23,6 +23,8 @@ type Route struct {
 	Gateway string
 	// Network is network address
 	Network string
+	// Router is router id
+	Router string
 	// Link is network link
 	Link string
 	// Metric is the route cost metric
@@ -33,6 +35,6 @@ type Route struct {
 func (r *Route) Hash() uint64 {
 	h := fnv.New64()
 	h.Reset()
-	h.Write([]byte(r.Service + r.Address + r.Gateway + r.Network + r.Link))
+	h.Write([]byte(r.Service + r.Address + r.Gateway + r.Network + r.Router + r.Link))
 	return h.Sum64()
 }

router/router.go

@@ -5,6 +5,17 @@ import (
 	"time"
 )
 
+var (
+	// DefaultAddress is default router address
+	DefaultAddress = ":9093"
+	// DefaultName is default router service name
+	DefaultName = "go.micro.router"
+	// DefaultNetwork is default micro network
+	DefaultNetwork = "go.micro"
+	// DefaultRouter is default network router
+	DefaultRouter = NewRouter()
+)
+
 // Router is an interface for a routing control plane
 type Router interface {
 	// Init initializes the router with options
@@ -17,10 +28,14 @@ type Router interface {
 	Advertise() (<-chan *Advert, error)
 	// Process processes incoming adverts
 	Process(*Advert) error
+	// Solicit advertises the whole routing table to the network
+	Solicit() error
 	// Lookup queries routes in the routing table
 	Lookup(Query) ([]Route, error)
 	// Watch returns a watcher which tracks updates to the routing table
 	Watch(opts ...WatchOption) (Watcher, error)
+	// Start starts the router
+	Start() error
 	// Status returns router status
 	Status() Status
 	// Stop stops the router
@@ -29,16 +44,17 @@ type Router interface {
 	String() string
 }
 
+// Table is an interface for routing table
 type Table interface {
 	// Create new route in the routing table
 	Create(Route) error
-	// Delete deletes existing route from the routing table
+	// Delete existing route from the routing table
 	Delete(Route) error
-	// Update updates route in the routing table
+	// Update route in the routing table
 	Update(Route) error
-	// List returns the list of all routes in the table
+	// List all routes in the table
 	List() ([]Route, error)
-	// Query queries routes in the routing table
+	// Query routes in the routing table
 	Query(Query) ([]Route, error)
 }
 
@@ -76,10 +92,15 @@ func (s StatusCode) String() string {
 
 // Status is router status
 type Status struct {
-	// Error is router error
-	Error error
 	// Code defines router status
 	Code StatusCode
+	// Error contains error description
+	Error error
+}
+
+// String returns human readable status
+func (s Status) String() string {
+	return s.Code.String()
 }
 
 // AdvertType is route advertisement type
@@ -118,17 +139,6 @@ type Advert struct {
 	Events []*Event
 }
 
-var (
-	// DefaultAddress is default router address
-	DefaultAddress = ":9093"
-	// DefaultName is default router service name
-	DefaultName = "go.micro.router"
-	// DefaultNetwork is default micro network
-	DefaultNetwork = "go.micro"
-	// DefaultRouter is default network router
-	DefaultRouter = NewRouter()
-)
-
 // NewRouter creates new Router and returns it
 func NewRouter(opts ...Option) Router {
 	return newRouter(opts...)

router/service/service.go

@@ -9,8 +9,8 @@ import (
 	"time"
 
 	"github.com/micro/go-micro/client"
-	"github.com/micro/go-micro/network/router"
-	pb "github.com/micro/go-micro/network/router/proto"
+	"github.com/micro/go-micro/router"
+	pb "github.com/micro/go-micro/router/proto"
 )
 
 type svc struct {
@@ -43,9 +43,16 @@ func NewRouter(opts ...router.Option) router.Router {
 		cli = options.Client
 	}
 
+	// set the status to Stopped
+	status := &router.Status{
+		Code:  router.Stopped,
+		Error: nil,
+	}
+
 	// NOTE: should we have Client/Service option in router.Options?
 	s := &svc{
 		opts:   options,
+		status: status,
 		router: pb.NewRouterService(router.DefaultName, cli),
 	}
 
@@ -63,21 +70,43 @@ func NewRouter(opts ...router.Option) router.Router {
 
 // Init initializes router with given options
 func (s *svc) Init(opts ...router.Option) error {
+	s.Lock()
+	defer s.Unlock()
+
 	for _, o := range opts {
 		o(&s.opts)
 	}
+
 	return nil
 }
 
 // Options returns router options
 func (s *svc) Options() router.Options {
-	return s.opts
+	s.Lock()
+	opts := s.opts
+	s.Unlock()
+
+	return opts
 }
 
+// Table returns routing table
 func (s *svc) Table() router.Table {
 	return s.table
 }
 
+// Start starts the service
+func (s *svc) Start() error {
+	s.Lock()
+	defer s.Unlock()
+
+	s.status = &router.Status{
+		Code:  router.Running,
+		Error: nil,
+	}
+
+	return nil
+}
+
 func (s *svc) advertiseEvents(advertChan chan *router.Advert, stream pb.Router_AdvertiseService) error {
 	go func() {
 		<-s.exit
@@ -140,12 +169,9 @@ func (s *svc) Advertise() (<-chan *router.Advert, error) {
 	s.Lock()
 	defer s.Unlock()
 
-	// get the status
-	status := s.Status()
-
-	switch status.Code {
+	switch s.status.Code {
 	case router.Running, router.Advertising:
-		stream, err := s.router.Advertise(context.Background(), &pb.AdvertiseRequest{}, s.callOpts...)
+		stream, err := s.router.Advertise(context.Background(), &pb.Request{}, s.callOpts...)
 		if err != nil {
 			return nil, fmt.Errorf("failed getting advert stream: %s", err)
 		}
@@ -154,15 +180,7 @@ func (s *svc) Advertise() (<-chan *router.Advert, error) {
 		go s.advertiseEvents(advertChan, stream)
 		return advertChan, nil
 	case router.Stopped:
-		// check if our router is stopped
-		select {
-		case <-s.exit:
-			s.exit = make(chan bool)
-			// call advertise again
-			return s.Advertise()
-		default:
-			return nil, fmt.Errorf("not running")
-		}
+		return nil, fmt.Errorf("not running")
 	}
 
 	return nil, fmt.Errorf("error: %s", s.status.Error)
@@ -202,6 +220,42 @@ func (s *svc) Process(advert *router.Advert) error {
 	return nil
 }
 
+// Solicit advertise all routes
+func (s *svc) Solicit() error {
+	// list all the routes
+	routes, err := s.table.List()
+	if err != nil {
+		return err
+	}
+
+	// build events to advertise
+	events := make([]*router.Event, len(routes))
+	for i, _ := range events {
+		events[i] = &router.Event{
+			Type:      router.Update,
+			Timestamp: time.Now(),
+			Route:     routes[i],
+		}
+	}
+
+	advert := &router.Advert{
+		Id:        s.opts.Id,
+		Type:      router.RouteUpdate,
+		Timestamp: time.Now(),
+		TTL:       time.Duration(router.DefaultAdvertTTL),
+		Events:    events,
+	}
+
+	select {
+	case s.advertChan <- advert:
+	case <-s.exit:
+		close(s.advertChan)
+		return nil
+	}
+
+	return nil
+}
+
 // Status returns router status
 func (s *svc) Status() router.Status {
 	s.Lock()

router/service/table.go

@@ -4,8 +4,8 @@ import (
 	"context"
 
 	"github.com/micro/go-micro/client"
-	"github.com/micro/go-micro/network/router"
-	pb "github.com/micro/go-micro/network/router/proto"
+	"github.com/micro/go-micro/router"
+	pb "github.com/micro/go-micro/router/proto"
 )
 
 type table struct {

router/service/watcher.go

@@ -5,8 +5,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/micro/go-micro/network/router"
-	pb "github.com/micro/go-micro/network/router/proto"
+	"github.com/micro/go-micro/router"
+	pb "github.com/micro/go-micro/router/proto"
 )
 
 type watcher struct {

router/table.go

@@ -8,7 +8,14 @@ import (
 	"github.com/google/uuid"
 )
 
-// table is an in memory routing table
+var (
+	// ErrRouteNotFound is returned when no route was found in the routing table
+	ErrRouteNotFound = errors.New("route not found")
+	// ErrDuplicateRoute is returned when the route already exists
+	ErrDuplicateRoute = errors.New("duplicate route")
+)
+
+// table is an in-memory routing table
 type table struct {
 	sync.RWMutex
 	// routes stores service routes
@@ -25,6 +32,19 @@ func newTable(opts ...Option) *table {
 	}
 }
 
+// sendEvent sends events to all subscribed watchers
+func (t *table) sendEvent(e *Event) {
+	t.RLock()
+	defer t.RUnlock()
+
+	for _, w := range t.watchers {
+		select {
+		case w.resChan <- e:
+		case <-w.done:
+		}
+	}
+}
+
 // Create creates new route in the routing table
 func (t *table) Create(r Route) error {
 	service := r.Service
@@ -63,8 +83,10 @@ func (t *table) Delete(r Route) error {
 		return ErrRouteNotFound
 	}
 
-	delete(t.routes[service], sum)
-	go t.sendEvent(&Event{Type: Delete, Timestamp: time.Now(), Route: r})
+	if _, ok := t.routes[service][sum]; ok {
+		delete(t.routes[service], sum)
+		go t.sendEvent(&Event{Type: Delete, Timestamp: time.Now(), Route: r})
+	}
 
 	return nil
 }
@@ -85,8 +107,10 @@ func (t *table) Update(r Route) error {
 		return nil
 	}
 
-	t.routes[service][sum] = r
-	go t.sendEvent(&Event{Type: Update, Timestamp: time.Now(), Route: r})
+	if _, ok := t.routes[service][sum]; !ok {
+		t.routes[service][sum] = r
+		go t.sendEvent(&Event{Type: Update, Timestamp: time.Now(), Route: r})
+	}
 
 	return nil
 }
@@ -106,21 +130,23 @@ func (t *table) List() ([]Route, error) {
 	return routes, nil
 }
 
-// isMatch checks if the route matches given network and router
-func isMatch(route Route, network, router string) bool {
-	if network == "*" || network == route.Network {
-		if router == "*" || router == route.Gateway {
-			return true
+// isMatch checks if the route matches given query options
+func isMatch(route Route, gateway, network, router string) bool {
+	if gateway == "*" || gateway == route.Gateway {
+		if network == "*" || network == route.Network {
+			if router == "*" || router == route.Router {
+				return true
+			}
 		}
 	}
 	return false
 }
 
 // findRoutes finds all the routes for given network and router and returns them
-func findRoutes(routes map[uint64]Route, network, router string) []Route {
+func findRoutes(routes map[uint64]Route, gateway, network, router string) []Route {
 	var results []Route
 	for _, route := range routes {
-		if isMatch(route, network, router) {
+		if isMatch(route, gateway, network, router) {
 			results = append(results, route)
 		}
 	}
@@ -136,13 +162,13 @@ func (t *table) Query(q Query) ([]Route, error) {
 		if _, ok := t.routes[q.Options().Service]; !ok {
 			return nil, ErrRouteNotFound
 		}
-		return findRoutes(t.routes[q.Options().Service], q.Options().Network, q.Options().Gateway), nil
+		return findRoutes(t.routes[q.Options().Service], q.Options().Gateway, q.Options().Network, q.Options().Router), nil
 	}
 
 	var results []Route
 	// search through all destinations
 	for _, routes := range t.routes {
-		results = append(results, findRoutes(routes, q.Options().Network, q.Options().Gateway)...)
+		results = append(results, findRoutes(routes, q.Options().Gateway, q.Options().Network, q.Options().Router)...)
 	}
 
 	return results, nil
@@ -160,34 +186,24 @@ func (t *table) Watch(opts ...WatchOption) (Watcher, error) {
 	}
 
 	w := &tableWatcher{
+		id:      uuid.New().String(),
 		opts:    wopts,
 		resChan: make(chan *Event, 10),
 		done:    make(chan struct{}),
 	}
 
+	// when the watcher is stopped delete it
+	go func() {
+		<-w.done
+		t.Lock()
+		delete(t.watchers, w.id)
+		t.Unlock()
+	}()
+
+	// save the watcher
 	t.Lock()
-	t.watchers[uuid.New().String()] = w
+	t.watchers[w.id] = w
 	t.Unlock()
 
 	return w, nil
 }
-
-// sendEvent sends events to all subscribed watchers
-func (t *table) sendEvent(e *Event) {
-	t.RLock()
-	defer t.RUnlock()
-
-	for _, w := range t.watchers {
-		select {
-		case w.resChan <- e:
-		case <-w.done:
-		}
-	}
-}
-
-var (
-	// ErrRouteNotFound is returned when no route was found in the routing table
-	ErrRouteNotFound = errors.New("route not found")
-	// ErrDuplicateRoute is returned when the route already exists
-	ErrDuplicateRoute = errors.New("duplicate route")
-)

router/table_test.go

@@ -9,6 +9,7 @@ func testSetup() (*table, Route) {
 		Service: "dest.svc",
 		Gateway: "dest.gw",
 		Network: "dest.network",
+		Router:  "src.router",
 		Link:    "det.link",
 		Metric:  10,
 	}
@@ -109,11 +110,13 @@ func TestQuery(t *testing.T) {
 	svc := []string{"svc1", "svc2", "svc3"}
 	net := []string{"net1", "net2", "net1"}
 	gw := []string{"gw1", "gw2", "gw3"}
+	rtr := []string{"rtr1", "rt2", "rt3"}
 
 	for i := 0; i < len(svc); i++ {
 		route.Service = svc[i]
 		route.Network = net[i]
 		route.Gateway = gw[i]
+		route.Router = rtr[i]
 		if err := table.Create(route); err != nil {
 			t.Errorf("error adding route: %s", err)
 		}
@@ -127,8 +130,9 @@ func TestQuery(t *testing.T) {
 		t.Errorf("error looking up routes: %s", err)
 	}
 
-	// query particular net
-	query = NewQuery(QueryNetwork("net1"))
+	// query routes particular network
+	network := "net1"
+	query = NewQuery(QueryNetwork(network))
 
 	routes, err = table.Query(query)
 	if err != nil {
@@ -139,7 +143,13 @@ func TestQuery(t *testing.T) {
 		t.Errorf("incorrect number of routes returned. Expected: %d, found: %d", 2, len(routes))
 	}
 
-	// query particular gateway
+	for _, route := range routes {
+		if route.Network != network {
+			t.Errorf("incorrect route returned. Expected network: %s, found: %s", network, route.Network)
+		}
+	}
+
+	// query routes for particular gateway
 	gateway := "gw1"
 	query = NewQuery(QueryGateway(gateway))
 
@@ -156,11 +166,28 @@ func TestQuery(t *testing.T) {
 		t.Errorf("incorrect route returned. Expected gateway: %s, found: %s", gateway, routes[0].Gateway)
 	}
 
-	// query particular route
-	network := "net1"
+	// query routes for particular router
+	router := "rtr1"
+	query = NewQuery(QueryRouter(router))
+
+	routes, err = table.Query(query)
+	if err != nil {
+		t.Errorf("error looking up routes: %s", err)
+	}
+
+	if len(routes) != 1 {
+		t.Errorf("incorrect number of routes returned. Expected: %d, found: %d", 1, len(routes))
+	}
+
+	if routes[0].Router != router {
+		t.Errorf("incorrect route returned. Expected router: %s, found: %s", router, routes[0].Router)
+	}
+
+	// query particular gateway and network
 	query = NewQuery(
 		QueryGateway(gateway),
 		QueryNetwork(network),
+		QueryRouter(router),
 	)
 
 	routes, err = table.Query(query)
@@ -180,7 +207,11 @@ func TestQuery(t *testing.T) {
 		t.Errorf("incorrect network returned. Expected network: %s, found: %s", network, routes[0].Network)
 	}
 
-	// bullshit route query
+	if routes[0].Router != router {
+		t.Errorf("incorrect route returned. Expected router: %s, found: %s", router, routes[0].Router)
+	}
+
+	// non-existen route query
 	query = NewQuery(QueryService("foobar"))
 
 	routes, err = table.Query(query)

router/watcher.go

@@ -6,6 +6,11 @@ import (
 	"time"
 )
 
+var (
+	// ErrWatcherStopped is returned when routing table watcher has been stopped
+	ErrWatcherStopped = errors.New("watcher stopped")
+)
+
 // EventType defines routing table event
 type EventType int
 
@@ -42,9 +47,6 @@ type Event struct {
 	Route Route
 }
 
-// WatchOption is used to define what routes to watch in the table
-type WatchOption func(*WatchOptions)
-
 // Watcher defines routing table watcher interface
 // Watcher returns updates to the routing table
 type Watcher interface {
@@ -56,7 +58,11 @@ type Watcher interface {
 	Stop()
 }
 
+// WatchOption is used to define what routes to watch in the table
+type WatchOption func(*WatchOptions)
+
 // WatchOptions are table watcher options
+// TODO: expand the options to watch based on other criteria
 type WatchOptions struct {
 	// Service allows to watch specific service routes
 	Service string
@@ -70,8 +76,10 @@ func WatchService(s string) WatchOption {
 	}
 }
 
+// tableWatcher implements routing table Watcher
 type tableWatcher struct {
 	sync.RWMutex
+	id      string
 	opts    WatchOptions
 	resChan chan *Event
 	done    chan struct{}
@@ -112,8 +120,3 @@ func (w *tableWatcher) Stop() {
 		close(w.done)
 	}
 }
-
-var (
-	// ErrWatcherStopped is returned when routing table watcher has been stopped
-	ErrWatcherStopped = errors.New("watcher stopped")
-)

server/debug.go

@@ -1,9 +0,0 @@
-package server
-
-import (
-	"github.com/micro/go-micro/server/debug"
-)
-
-func registerDebugHandler(s Server) {
-	s.Handle(s.NewHandler(&debug.Debug{s.Options().DebugHandler}, InternalHandler(true)))
-}

server/debug/debug.go

@@ -1,55 +0,0 @@
-package debug
-
-import (
-	"context"
-	"runtime"
-	"time"
-
-	proto "github.com/micro/go-micro/server/debug/proto"
-)
-
-// The debug handler represents an internal server handler
-// used to determine health, status and env info about
-// a service node. It's akin to Google's /statusz, /healthz,
-// and /varz
-type Handler interface {
-	Health(ctx context.Context, req *proto.HealthRequest, rsp *proto.HealthResponse) error
-	Stats(ctx context.Context, req *proto.StatsRequest, rsp *proto.StatsResponse) error
-}
-
-// Our own internal handler
-type debug struct {
-	started int64
-}
-
-// We use this to wrap any debug handlers so we preserve the signature Debug.{Method}
-type Debug struct {
-	Handler
-}
-
-var (
-	DefaultHandler Handler = newDebug()
-)
-
-func newDebug() *debug {
-	return &debug{
-		started: time.Now().Unix(),
-	}
-}
-
-func (d *debug) Health(ctx context.Context, req *proto.HealthRequest, rsp *proto.HealthResponse) error {
-	rsp.Status = "ok"
-	return nil
-}
-
-func (d *debug) Stats(ctx context.Context, req *proto.StatsRequest, rsp *proto.StatsResponse) error {
-	var mstat runtime.MemStats
-	runtime.ReadMemStats(&mstat)
-
-	rsp.Started = uint64(d.started)
-	rsp.Uptime = uint64(time.Now().Unix() - d.started)
-	rsp.Memory = mstat.Alloc
-	rsp.Gc = mstat.PauseTotalNs
-	rsp.Threads = uint64(runtime.NumGoroutine())
-	return nil
-}

server/debug/proto/debug.pb.go

@@ -1,100 +0,0 @@
-// Code generated by protoc-gen-go.
-// source: github.com/micro/go-micro/server/debug/proto/debug.proto
-// DO NOT EDIT!
-
-/*
-Package debug is a generated protocol buffer package.
-
-It is generated from these files:
-	github.com/micro/go-micro/server/debug/proto/debug.proto
-
-It has these top-level messages:
-	HealthRequest
-	HealthResponse
-	StatsRequest
-	StatsResponse
-*/
-package debug
-
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
-
-type HealthRequest struct {
-}
-
-func (m *HealthRequest) Reset()                    { *m = HealthRequest{} }
-func (m *HealthRequest) String() string            { return proto.CompactTextString(m) }
-func (*HealthRequest) ProtoMessage()               {}
-func (*HealthRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
-
-type HealthResponse struct {
-	// default: ok
-	Status string `protobuf:"bytes,1,opt,name=status" json:"status,omitempty"`
-}
-
-func (m *HealthResponse) Reset()                    { *m = HealthResponse{} }
-func (m *HealthResponse) String() string            { return proto.CompactTextString(m) }
-func (*HealthResponse) ProtoMessage()               {}
-func (*HealthResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
-
-type StatsRequest struct {
-}
-
-func (m *StatsRequest) Reset()                    { *m = StatsRequest{} }
-func (m *StatsRequest) String() string            { return proto.CompactTextString(m) }
-func (*StatsRequest) ProtoMessage()               {}
-func (*StatsRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
-
-type StatsResponse struct {
-	// unix timestamp
-	Started uint64 `protobuf:"varint,1,opt,name=started" json:"started,omitempty"`
-	// in seconds
-	Uptime uint64 `protobuf:"varint,2,opt,name=uptime" json:"uptime,omitempty"`
-	// in bytes
-	Memory uint64 `protobuf:"varint,3,opt,name=memory" json:"memory,omitempty"`
-	// num threads
-	Threads uint64 `protobuf:"varint,4,opt,name=threads" json:"threads,omitempty"`
-	// in nanoseconds
-	Gc uint64 `protobuf:"varint,5,opt,name=gc" json:"gc,omitempty"`
-}
-
-func (m *StatsResponse) Reset()                    { *m = StatsResponse{} }
-func (m *StatsResponse) String() string            { return proto.CompactTextString(m) }
-func (*StatsResponse) ProtoMessage()               {}
-func (*StatsResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
-
-func init() {
-	proto.RegisterType((*HealthRequest)(nil), "HealthRequest")
-	proto.RegisterType((*HealthResponse)(nil), "HealthResponse")
-	proto.RegisterType((*StatsRequest)(nil), "StatsRequest")
-	proto.RegisterType((*StatsResponse)(nil), "StatsResponse")
-}
-
-var fileDescriptor0 = []byte{
-	// 201 bytes of a gzipped FileDescriptorProto
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-	0xff, 0xc6, 0x75, 0x51, 0x35, 0x13, 0x01, 0x00, 0x00,
-}