Merge pull request #485 from micro/grpc

Add grpc transport

cmd/cmd.go

@@ -34,6 +34,7 @@ import (
 
 	// transports
 	"github.com/micro/go-micro/transport"
+	tgrpc "github.com/micro/go-micro/transport/grpc"
 	thttp "github.com/micro/go-micro/transport/http"
 	tmem "github.com/micro/go-micro/transport/memory"
 )
@@ -199,6 +200,7 @@ var (
 	DefaultTransports = map[string]func(...transport.Option) transport.Transport{
 		"memory": tmem.NewTransport,
 		"http":   thttp.NewTransport,
+		"grpc":   tgrpc.NewTransport,
 	}
 
 	// used for default selection as the fall back

transport/grpc/grpc.go

@@ -0,0 +1,176 @@
+// Package grpc provides a grpc transport
+package grpc
+
+import (
+	"context"
+	"crypto/tls"
+	"net"
+
+	"github.com/micro/go-micro/transport"
+	maddr "github.com/micro/util/go/lib/addr"
+	mnet "github.com/micro/util/go/lib/net"
+	mls "github.com/micro/util/go/lib/tls"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+
+	pb "github.com/micro/go-plugins/transport/grpc/proto"
+)
+
+type grpcTransport struct {
+	opts transport.Options
+}
+
+type grpcTransportListener struct {
+	listener net.Listener
+	secure   bool
+	tls      *tls.Config
+}
+
+func getTLSConfig(addr string) (*tls.Config, error) {
+	hosts := []string{addr}
+
+	// check if its a valid host:port
+	if host, _, err := net.SplitHostPort(addr); err == nil {
+		if len(host) == 0 {
+			hosts = maddr.IPs()
+		} else {
+			hosts = []string{host}
+		}
+	}
+
+	// generate a certificate
+	cert, err := mls.Certificate(hosts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return &tls.Config{Certificates: []tls.Certificate{cert}}, nil
+}
+
+func (t *grpcTransportListener) Addr() string {
+	return t.listener.Addr().String()
+}
+
+func (t *grpcTransportListener) Close() error {
+	return t.listener.Close()
+}
+
+func (t *grpcTransportListener) Accept(fn func(transport.Socket)) error {
+	var opts []grpc.ServerOption
+
+	// setup tls if specified
+	if t.secure || t.tls != nil {
+		config := t.tls
+		if config == nil {
+			var err error
+			addr := t.listener.Addr().String()
+			config, err = getTLSConfig(addr)
+			if err != nil {
+				return err
+			}
+		}
+
+		creds := credentials.NewTLS(config)
+		opts = append(opts, grpc.Creds(creds))
+	}
+
+	// new service
+	srv := grpc.NewServer(opts...)
+
+	// register service
+	pb.RegisterTransportServer(srv, &microTransport{addr: t.listener.Addr().String(), fn: fn})
+
+	// start serving
+	return srv.Serve(t.listener)
+}
+
+func (t *grpcTransport) Dial(addr string, opts ...transport.DialOption) (transport.Client, error) {
+	dopts := transport.DialOptions{
+		Timeout: transport.DefaultDialTimeout,
+	}
+
+	for _, opt := range opts {
+		opt(&dopts)
+	}
+
+	options := []grpc.DialOption{
+		grpc.WithTimeout(dopts.Timeout),
+	}
+
+	if t.opts.Secure || t.opts.TLSConfig != nil {
+		config := t.opts.TLSConfig
+		if config == nil {
+			config = &tls.Config{
+				InsecureSkipVerify: true,
+			}
+		}
+		creds := credentials.NewTLS(config)
+		options = append(options, grpc.WithTransportCredentials(creds))
+	} else {
+		options = append(options, grpc.WithInsecure())
+	}
+
+	// dial the server
+	conn, err := grpc.Dial(addr, options...)
+	if err != nil {
+		return nil, err
+	}
+
+	// create stream
+	stream, err := pb.NewTransportClient(conn).Stream(context.Background())
+	if err != nil {
+		return nil, err
+	}
+
+	// return a client
+	return &grpcTransportClient{
+		conn:   conn,
+		stream: stream,
+		local:  "localhost",
+		remote: addr,
+	}, nil
+}
+
+func (t *grpcTransport) Listen(addr string, opts ...transport.ListenOption) (transport.Listener, error) {
+	var options transport.ListenOptions
+	for _, o := range opts {
+		o(&options)
+	}
+
+	ln, err := mnet.Listen(addr, func(addr string) (net.Listener, error) {
+		return net.Listen("tcp", addr)
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return &grpcTransportListener{
+		listener: ln,
+		tls:      t.opts.TLSConfig,
+		secure:   t.opts.Secure,
+	}, nil
+}
+
+func (t *grpcTransport) Init(opts ...transport.Option) error {
+	for _, o := range opts {
+		o(&t.opts)
+	}
+	return nil
+}
+
+func (t *grpcTransport) Options() transport.Options {
+	return t.opts
+}
+
+func (t *grpcTransport) String() string {
+	return "grpc"
+}
+
+func NewTransport(opts ...transport.Option) transport.Transport {
+	var options transport.Options
+	for _, o := range opts {
+		o(&options)
+	}
+	return &grpcTransport{opts: options}
+}

transport/grpc/grpc_test.go

@@ -0,0 +1,109 @@
+package grpc
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/micro/go-micro/transport"
+)
+
+func expectedPort(t *testing.T, expected string, lsn transport.Listener) {
+	parts := strings.Split(lsn.Addr(), ":")
+	port := parts[len(parts)-1]
+
+	if port != expected {
+		lsn.Close()
+		t.Errorf("Expected address to be `%s`, got `%s`", expected, port)
+	}
+}
+
+func TestGRPCTransportPortRange(t *testing.T) {
+	tp := NewTransport()
+
+	lsn1, err := tp.Listen(":44444-44448")
+	if err != nil {
+		t.Errorf("Did not expect an error, got %s", err)
+	}
+	expectedPort(t, "44444", lsn1)
+
+	lsn2, err := tp.Listen(":44444-44448")
+	if err != nil {
+		t.Errorf("Did not expect an error, got %s", err)
+	}
+	expectedPort(t, "44445", lsn2)
+
+	lsn, err := tp.Listen(":0")
+	if err != nil {
+		t.Errorf("Did not expect an error, got %s", err)
+	}
+
+	lsn.Close()
+	lsn1.Close()
+	lsn2.Close()
+}
+
+func TestGRPCTransportCommunication(t *testing.T) {
+	tr := NewTransport()
+
+	l, err := tr.Listen(":0")
+	if err != nil {
+		t.Errorf("Unexpected listen err: %v", err)
+	}
+	defer l.Close()
+
+	fn := func(sock transport.Socket) {
+		defer sock.Close()
+
+		for {
+			var m transport.Message
+			if err := sock.Recv(&m); err != nil {
+				return
+			}
+
+			if err := sock.Send(&m); err != nil {
+				return
+			}
+		}
+	}
+
+	done := make(chan bool)
+
+	go func() {
+		if err := l.Accept(fn); err != nil {
+			select {
+			case <-done:
+			default:
+				t.Errorf("Unexpected accept err: %v", err)
+			}
+		}
+	}()
+
+	c, err := tr.Dial(l.Addr())
+	if err != nil {
+		t.Errorf("Unexpected dial err: %v", err)
+	}
+	defer c.Close()
+
+	m := transport.Message{
+		Header: map[string]string{
+			"X-Content-Type": "application/json",
+		},
+		Body: []byte(`{"message": "Hello World"}`),
+	}
+
+	if err := c.Send(&m); err != nil {
+		t.Errorf("Unexpected send err: %v", err)
+	}
+
+	var rm transport.Message
+
+	if err := c.Recv(&rm); err != nil {
+		t.Errorf("Unexpected recv err: %v", err)
+	}
+
+	if string(rm.Body) != string(m.Body) {
+		t.Errorf("Expected %v, got %v", m.Body, rm.Body)
+	}
+
+	close(done)
+}

transport/grpc/handler.go

@@ -0,0 +1,39 @@
+package grpc
+
+import (
+	"runtime/debug"
+
+	"github.com/micro/go-log"
+	"github.com/micro/go-micro/transport"
+	pb "github.com/micro/go-plugins/transport/grpc/proto"
+	"google.golang.org/grpc/peer"
+)
+
+// microTransport satisfies the pb.TransportServer inteface
+type microTransport struct {
+	addr string
+	fn   func(transport.Socket)
+}
+
+func (m *microTransport) Stream(ts pb.Transport_StreamServer) error {
+	sock := &grpcTransportSocket{
+		stream: ts,
+		local:  m.addr,
+	}
+
+	p, ok := peer.FromContext(ts.Context())
+	if ok {
+		sock.remote = p.Addr.String()
+	}
+
+	defer func() {
+		if r := recover(); r != nil {
+			log.Log(r, string(debug.Stack()))
+			sock.Close()
+		}
+	}()
+
+	// execute socket func
+	m.fn(sock)
+	return nil
+}

transport/grpc/proto/transport.micro.go

@@ -0,0 +1,170 @@
+// Code generated by protoc-gen-micro. DO NOT EDIT.
+// source: github.com/micro/go-plugins/transport/grpc/proto/transport.proto
+
+/*
+Package go_micro_grpc_transport is a generated protocol buffer package.
+
+It is generated from these files:
+	github.com/micro/go-plugins/transport/grpc/proto/transport.proto
+
+It has these top-level messages:
+	Message
+*/
+package go_micro_grpc_transport
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import 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.ProtoPackageIsVersion2 // 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 Transport service
+
+type TransportService interface {
+	Stream(ctx context.Context, opts ...client.CallOption) (Transport_StreamService, error)
+}
+
+type transportService struct {
+	c    client.Client
+	name string
+}
+
+func NewTransportService(name string, c client.Client) TransportService {
+	if c == nil {
+		c = client.NewClient()
+	}
+	if len(name) == 0 {
+		name = "go.micro.grpc.transport"
+	}
+	return &transportService{
+		c:    c,
+		name: name,
+	}
+}
+
+func (c *transportService) Stream(ctx context.Context, opts ...client.CallOption) (Transport_StreamService, error) {
+	req := c.c.NewRequest(c.name, "Transport.Stream", &Message{})
+	stream, err := c.c.Stream(ctx, req, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &transportServiceStream{stream}, nil
+}
+
+type Transport_StreamService interface {
+	SendMsg(interface{}) error
+	RecvMsg(interface{}) error
+	Close() error
+	Send(*Message) error
+	Recv() (*Message, error)
+}
+
+type transportServiceStream struct {
+	stream client.Stream
+}
+
+func (x *transportServiceStream) Close() error {
+	return x.stream.Close()
+}
+
+func (x *transportServiceStream) SendMsg(m interface{}) error {
+	return x.stream.Send(m)
+}
+
+func (x *transportServiceStream) RecvMsg(m interface{}) error {
+	return x.stream.Recv(m)
+}
+
+func (x *transportServiceStream) Send(m *Message) error {
+	return x.stream.Send(m)
+}
+
+func (x *transportServiceStream) Recv() (*Message, error) {
+	m := new(Message)
+	err := x.stream.Recv(m)
+	if err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// Server API for Transport service
+
+type TransportHandler interface {
+	Stream(context.Context, Transport_StreamStream) error
+}
+
+func RegisterTransportHandler(s server.Server, hdlr TransportHandler, opts ...server.HandlerOption) {
+	type transport interface {
+		Stream(ctx context.Context, stream server.Stream) error
+	}
+	type Transport struct {
+		transport
+	}
+	h := &transportHandler{hdlr}
+	s.Handle(s.NewHandler(&Transport{h}, opts...))
+}
+
+type transportHandler struct {
+	TransportHandler
+}
+
+func (h *transportHandler) Stream(ctx context.Context, stream server.Stream) error {
+	return h.TransportHandler.Stream(ctx, &transportStreamStream{stream})
+}
+
+type Transport_StreamStream interface {
+	SendMsg(interface{}) error
+	RecvMsg(interface{}) error
+	Close() error
+	Send(*Message) error
+	Recv() (*Message, error)
+}
+
+type transportStreamStream struct {
+	stream server.Stream
+}
+
+func (x *transportStreamStream) Close() error {
+	return x.stream.Close()
+}
+
+func (x *transportStreamStream) SendMsg(m interface{}) error {
+	return x.stream.Send(m)
+}
+
+func (x *transportStreamStream) RecvMsg(m interface{}) error {
+	return x.stream.Recv(m)
+}
+
+func (x *transportStreamStream) Send(m *Message) error {
+	return x.stream.Send(m)
+}
+
+func (x *transportStreamStream) Recv() (*Message, error) {
+	m := new(Message)
+	if err := x.stream.Recv(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}

transport/grpc/proto/transport.pb.go

@@ -0,0 +1,188 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: github.com/micro/go-plugins/transport/grpc/proto/transport.proto
+
+/*
+Package go_micro_grpc_transport is a generated protocol buffer package.
+
+It is generated from these files:
+	github.com/micro/go-plugins/transport/grpc/proto/transport.proto
+
+It has these top-level messages:
+	Message
+*/
+package go_micro_grpc_transport
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+import (
+	context "golang.org/x/net/context"
+	grpc "google.golang.org/grpc"
+)
+
+// 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 Message struct {
+	Header map[string]string `protobuf:"bytes,1,rep,name=header" json:"header,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	Body   []byte            `protobuf:"bytes,2,opt,name=body,proto3" json:"body,omitempty"`
+}
+
+func (m *Message) Reset()                    { *m = Message{} }
+func (m *Message) String() string            { return proto.CompactTextString(m) }
+func (*Message) ProtoMessage()               {}
+func (*Message) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+func (m *Message) GetHeader() map[string]string {
+	if m != nil {
+		return m.Header
+	}
+	return nil
+}
+
+func (m *Message) GetBody() []byte {
+	if m != nil {
+		return m.Body
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*Message)(nil), "go.micro.grpc.transport.Message")
+}
+
+// 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
+
+// Client API for Transport service
+
+type TransportClient interface {
+	Stream(ctx context.Context, opts ...grpc.CallOption) (Transport_StreamClient, error)
+}
+
+type transportClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewTransportClient(cc *grpc.ClientConn) TransportClient {
+	return &transportClient{cc}
+}
+
+func (c *transportClient) Stream(ctx context.Context, opts ...grpc.CallOption) (Transport_StreamClient, error) {
+	stream, err := grpc.NewClientStream(ctx, &_Transport_serviceDesc.Streams[0], c.cc, "/go.micro.grpc.transport.Transport/Stream", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &transportStreamClient{stream}
+	return x, nil
+}
+
+type Transport_StreamClient interface {
+	Send(*Message) error
+	Recv() (*Message, error)
+	grpc.ClientStream
+}
+
+type transportStreamClient struct {
+	grpc.ClientStream
+}
+
+func (x *transportStreamClient) Send(m *Message) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *transportStreamClient) Recv() (*Message, error) {
+	m := new(Message)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// Server API for Transport service
+
+type TransportServer interface {
+	Stream(Transport_StreamServer) error
+}
+
+func RegisterTransportServer(s *grpc.Server, srv TransportServer) {
+	s.RegisterService(&_Transport_serviceDesc, srv)
+}
+
+func _Transport_Stream_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(TransportServer).Stream(&transportStreamServer{stream})
+}
+
+type Transport_StreamServer interface {
+	Send(*Message) error
+	Recv() (*Message, error)
+	grpc.ServerStream
+}
+
+type transportStreamServer struct {
+	grpc.ServerStream
+}
+
+func (x *transportStreamServer) Send(m *Message) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *transportStreamServer) Recv() (*Message, error) {
+	m := new(Message)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+var _Transport_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "go.micro.grpc.transport.Transport",
+	HandlerType: (*TransportServer)(nil),
+	Methods:     []grpc.MethodDesc{},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "Stream",
+			Handler:       _Transport_Stream_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+	},
+	Metadata: "github.com/micro/go-plugins/transport/grpc/proto/transport.proto",
+}
+
+func init() {
+	proto.RegisterFile("github.com/micro/go-plugins/transport/grpc/proto/transport.proto", fileDescriptor0)
+}
+
+var fileDescriptor0 = []byte{
+	// 234 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x72, 0x48, 0xcf, 0x2c, 0xc9,
+	0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0xcf, 0xcd, 0x4c, 0x2e, 0xca, 0xd7, 0x4f, 0xcf, 0xd7,
+	0x2d, 0xc8, 0x29, 0x4d, 0xcf, 0xcc, 0x2b, 0xd6, 0x2f, 0x29, 0x4a, 0xcc, 0x2b, 0x2e, 0xc8, 0x2f,
+	0x2a, 0xd1, 0x4f, 0x2f, 0x2a, 0x48, 0xd6, 0x2f, 0x28, 0xca, 0x2f, 0xc9, 0x47, 0x08, 0xea, 0x81,
+	0xf9, 0x42, 0xe2, 0xe9, 0xf9, 0x7a, 0x60, 0x9d, 0x7a, 0x20, 0x45, 0x7a, 0x70, 0x69, 0xa5, 0x79,
+	0x8c, 0x5c, 0xec, 0xbe, 0xa9, 0xc5, 0xc5, 0x89, 0xe9, 0xa9, 0x42, 0x2e, 0x5c, 0x6c, 0x19, 0xa9,
+	0x89, 0x29, 0xa9, 0x45, 0x12, 0x8c, 0x0a, 0xcc, 0x1a, 0xdc, 0x46, 0x3a, 0x7a, 0x38, 0x74, 0xe9,
+	0x41, 0x75, 0xe8, 0x79, 0x80, 0x95, 0xbb, 0xe6, 0x95, 0x14, 0x55, 0x06, 0x41, 0xf5, 0x0a, 0x09,
+	0x71, 0xb1, 0x24, 0xe5, 0xa7, 0x54, 0x4a, 0x30, 0x29, 0x30, 0x6a, 0xf0, 0x04, 0x81, 0xd9, 0x52,
+	0x96, 0x5c, 0xdc, 0x48, 0x4a, 0x85, 0x04, 0xb8, 0x98, 0xb3, 0x53, 0x2b, 0x25, 0x18, 0x15, 0x18,
+	0x35, 0x38, 0x83, 0x40, 0x4c, 0x21, 0x11, 0x2e, 0xd6, 0xb2, 0xc4, 0x9c, 0xd2, 0x54, 0xb0, 0x2e,
+	0xce, 0x20, 0x08, 0xc7, 0x8a, 0xc9, 0x82, 0xd1, 0x28, 0x9e, 0x8b, 0x33, 0x04, 0x66, 0xaf, 0x50,
+	0x10, 0x17, 0x5b, 0x70, 0x49, 0x51, 0x6a, 0x62, 0xae, 0x90, 0x02, 0x21, 0xb7, 0x49, 0x11, 0x54,
+	0xa1, 0xc4, 0xa0, 0xc1, 0x68, 0xc0, 0x98, 0xc4, 0x06, 0x0e, 0x21, 0x63, 0x40, 0x00, 0x00, 0x00,
+	0xff, 0xff, 0x4e, 0xcc, 0x76, 0x38, 0x65, 0x01, 0x00, 0x00,
+}

transport/grpc/proto/transport.proto

@@ -0,0 +1,12 @@
+syntax = "proto3";
+
+package go.micro.grpc.transport;
+
+service Transport {
+	rpc Stream(stream Message) returns (stream Message) {}
+}
+
+message Message {
+	map<string, string> header = 1;
+	bytes body = 2;
+}

transport/grpc/socket.go

@@ -0,0 +1,97 @@
+package grpc
+
+import (
+	"github.com/micro/go-micro/transport"
+	pb "github.com/micro/go-plugins/transport/grpc/proto"
+	"google.golang.org/grpc"
+)
+
+type grpcTransportClient struct {
+	conn   *grpc.ClientConn
+	stream pb.Transport_StreamClient
+
+	local  string
+	remote string
+}
+
+type grpcTransportSocket struct {
+	stream pb.Transport_StreamServer
+	local  string
+	remote string
+}
+
+func (g *grpcTransportClient) Local() string {
+	return g.local
+}
+
+func (g *grpcTransportClient) Remote() string {
+	return g.remote
+}
+
+func (g *grpcTransportClient) Recv(m *transport.Message) error {
+	if m == nil {
+		return nil
+	}
+
+	msg, err := g.stream.Recv()
+	if err != nil {
+		return err
+	}
+
+	m.Header = msg.Header
+	m.Body = msg.Body
+	return nil
+}
+
+func (g *grpcTransportClient) Send(m *transport.Message) error {
+	if m == nil {
+		return nil
+	}
+
+	return g.stream.Send(&pb.Message{
+		Header: m.Header,
+		Body:   m.Body,
+	})
+}
+
+func (g *grpcTransportClient) Close() error {
+	return g.conn.Close()
+}
+
+func (g *grpcTransportSocket) Local() string {
+	return g.local
+}
+
+func (g *grpcTransportSocket) Remote() string {
+	return g.remote
+}
+
+func (g *grpcTransportSocket) Recv(m *transport.Message) error {
+	if m == nil {
+		return nil
+	}
+
+	msg, err := g.stream.Recv()
+	if err != nil {
+		return err
+	}
+
+	m.Header = msg.Header
+	m.Body = msg.Body
+	return nil
+}
+
+func (g *grpcTransportSocket) Send(m *transport.Message) error {
+	if m == nil {
+		return nil
+	}
+
+	return g.stream.Send(&pb.Message{
+		Header: m.Header,
+		Body:   m.Body,
+	})
+}
+
+func (g *grpcTransportSocket) Close() error {
+	return nil
+}