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Merge pull request #849 from micro/connect-init

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Connect init
This commit is contained in:
Asim Aslam 2019-10-13 18:40:11 +01:00 committed by GitHub
commit b701da6d69
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GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 331 additions and 87 deletions
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65
network/default.go
View File

@ -144,6 +144,18 @@ func newNetwork(opts ...Option) Network {
return network
}
func (n *network) Init(opts ...Option) error {
n.Lock()
defer n.Unlock()
// TODO: maybe only allow reinit of certain opts
for _, o := range opts {
o(&n.options)
}
return nil
}
// Options returns network options
func (n *network) Options() Options {
n.RLock()
@ -163,9 +175,6 @@ func (n *network) Name() string {
func (n *network) resolveNodes() ([]string, error) {
// resolve the network address to network nodes
records, err := n.options.Resolver.Resolve(n.options.Name)
if err != nil {
return nil, err
}
nodeMap := make(map[string]bool)
@ -197,6 +206,7 @@ func (n *network) resolveNodes() ([]string, error) {
// resolve anything that looks like a host name
records, err := dns.Resolve(node)
if err != nil {
log.Debugf("Failed to resolve %v %v", node, err)
continue
}
@ -208,7 +218,7 @@ func (n *network) resolveNodes() ([]string, error) {
}
}
return nodes, nil
return nodes, err
}
// resolve continuously resolves network nodes and initializes network tunnel with resolved addresses
@ -335,7 +345,7 @@ func (n *network) processNetChan(client transport.Client, listener tunnel.Listen
if pbNetPeer.Node.Id == n.options.Id {
continue
}
log.Debugf("Network received peer message from: %s", pbNetPeer.Node.Id)
log.Debugf("Network received peer message from: %s %s", pbNetPeer.Node.Id, pbNetPeer.Node.Address)
peer := &node{
id: pbNetPeer.Node.Id,
address: pbNetPeer.Node.Address,
@ -759,14 +769,25 @@ func (n *network) advertise(client transport.Client, advertChan <-chan *router.A
}
}
func (n *network) sendConnect() {
// send connect message to NetworkChannel
// NOTE: in theory we could do this as soon as
// Dial to NetworkChannel succeeds, but instead
// we initialize all other node resources first
msg := &pbNet.Connect{
Node: &pbNet.Node{
Id: n.node.id,
Address: n.node.address,
},
}
if err := n.sendMsg("connect", msg, NetworkChannel); err != nil {
log.Debugf("Network failed to send connect message: %s", err)
}
}
// Connect connects the network
func (n *network) Connect() error {
n.Lock()
// return if already connected
if n.connected {
n.Unlock()
return nil
}
// try to resolve network nodes
nodes, err := n.resolveNodes()
@ -785,6 +806,15 @@ func (n *network) Connect() error {
return err
}
// return if already connected
if n.connected {
// unlock first
n.Unlock()
// send the connect message
n.sendConnect()
return nil
}
// set our internal node address
// if advertise address is not set
if len(n.options.Advertise) == 0 {
@ -846,19 +876,8 @@ func (n *network) Connect() error {
}
n.Unlock()
// send connect message to NetworkChannel
// NOTE: in theory we could do this as soon as
// Dial to NetworkChannel succeeds, but instead
// we initialize all other node resources first
msg := &pbNet.Connect{
Node: &pbNet.Node{
Id: n.node.id,
Address: n.node.address,
},
}
if err := n.sendMsg("connect", msg, NetworkChannel); err != nil {
log.Debugf("Network failed to send connect message: %s", err)
}
// send the connect message
n.sendConnect()
// go resolving network nodes
go n.resolve()

2
network/network.go
View File

@ -38,6 +38,8 @@ type Node interface {
type Network interface {
// Node is network node
Node
// Initialise options
Init(...Option) error
// Options returns the network options
Options() Options
// Name of the network

19
network/proto/network.micro.go
View File

@ -35,6 +35,8 @@ var _ server.Option
// Client API for Network service
type NetworkService interface {
// Connect to the network
Connect(ctx context.Context, in *ConnectRequest, opts ...client.CallOption) (*ConnectResponse, error)
// Returns the entire network graph
Graph(ctx context.Context, in *GraphRequest, opts ...client.CallOption) (*GraphResponse, error)
// Returns a list of known nodes in the network
@ -63,6 +65,16 @@ func NewNetworkService(name string, c client.Client) NetworkService {
}
}
func (c *networkService) Connect(ctx context.Context, in *ConnectRequest, opts ...client.CallOption) (*ConnectResponse, error) {
req := c.c.NewRequest(c.name, "Network.Connect", in)
out := new(ConnectResponse)
err := c.c.Call(ctx, req, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *networkService) Graph(ctx context.Context, in *GraphRequest, opts ...client.CallOption) (*GraphResponse, error) {
req := c.c.NewRequest(c.name, "Network.Graph", in)
out := new(GraphResponse)
@ -106,6 +118,8 @@ func (c *networkService) Services(ctx context.Context, in *ServicesRequest, opts
// Server API for Network service
type NetworkHandler interface {
// Connect to the network
Connect(context.Context, *ConnectRequest, *ConnectResponse) error
// Returns the entire network graph
Graph(context.Context, *GraphRequest, *GraphResponse) error
// Returns a list of known nodes in the network
@ -118,6 +132,7 @@ type NetworkHandler interface {
func RegisterNetworkHandler(s server.Server, hdlr NetworkHandler, opts ...server.HandlerOption) error {
type network interface {
Connect(ctx context.Context, in *ConnectRequest, out *ConnectResponse) error
Graph(ctx context.Context, in *GraphRequest, out *GraphResponse) error
Nodes(ctx context.Context, in *NodesRequest, out *NodesResponse) error
Routes(ctx context.Context, in *RoutesRequest, out *RoutesResponse) error
@ -134,6 +149,10 @@ type networkHandler struct {
NetworkHandler
}
func (h *networkHandler) Connect(ctx context.Context, in *ConnectRequest, out *ConnectResponse) error {
return h.NetworkHandler.Connect(ctx, in, out)
}
func (h *networkHandler) Graph(ctx context.Context, in *GraphRequest, out *GraphResponse) error {
return h.NetworkHandler.Graph(ctx, in, out)
}

219
network/proto/network.pb.go
View File

@ -95,6 +95,76 @@ func (m *Query) GetNetwork() string {
return ""
}
type ConnectRequest 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 *ConnectRequest) Reset() { *m = ConnectRequest{} }
func (m *ConnectRequest) String() string { return proto.CompactTextString(m) }
func (*ConnectRequest) ProtoMessage() {}
func (*ConnectRequest) Descriptor() ([]byte, []int) {
return fileDescriptor_0b7953b26a7c4730, []int{1}
}
func (m *ConnectRequest) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_ConnectRequest.Unmarshal(m, b)
}
func (m *ConnectRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_ConnectRequest.Marshal(b, m, deterministic)
}
func (m *ConnectRequest) XXX_Merge(src proto.Message) {
xxx_messageInfo_ConnectRequest.Merge(m, src)
}
func (m *ConnectRequest) XXX_Size() int {
return xxx_messageInfo_ConnectRequest.Size(m)
}
func (m *ConnectRequest) XXX_DiscardUnknown() {
xxx_messageInfo_ConnectRequest.DiscardUnknown(m)
}
var xxx_messageInfo_ConnectRequest proto.InternalMessageInfo
func (m *ConnectRequest) GetNodes() []*Node {
if m != nil {
return m.Nodes
}
return nil
}
type ConnectResponse struct {
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *ConnectResponse) Reset() { *m = ConnectResponse{} }
func (m *ConnectResponse) String() string { return proto.CompactTextString(m) }
func (*ConnectResponse) ProtoMessage() {}
func (*ConnectResponse) Descriptor() ([]byte, []int) {
return fileDescriptor_0b7953b26a7c4730, []int{2}
}
func (m *ConnectResponse) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_ConnectResponse.Unmarshal(m, b)
}
func (m *ConnectResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_ConnectResponse.Marshal(b, m, deterministic)
}
func (m *ConnectResponse) XXX_Merge(src proto.Message) {
xxx_messageInfo_ConnectResponse.Merge(m, src)
}
func (m *ConnectResponse) XXX_Size() int {
return xxx_messageInfo_ConnectResponse.Size(m)
}
func (m *ConnectResponse) XXX_DiscardUnknown() {
xxx_messageInfo_ConnectResponse.DiscardUnknown(m)
}
var xxx_messageInfo_ConnectResponse proto.InternalMessageInfo
// PeerRequest requests list of peers
type NodesRequest struct {
// node topology depth
@ -108,7 +178,7 @@ func (m *NodesRequest) Reset() { *m = NodesRequest{} }
func (m *NodesRequest) String() string { return proto.CompactTextString(m) }
func (*NodesRequest) ProtoMessage() {}
func (*NodesRequest) Descriptor() ([]byte, []int) {
return fileDescriptor_0b7953b26a7c4730, []int{1}
return fileDescriptor_0b7953b26a7c4730, []int{3}
}
func (m *NodesRequest) XXX_Unmarshal(b []byte) error {
@ -149,7 +219,7 @@ func (m *NodesResponse) Reset() { *m = NodesResponse{} }
func (m *NodesResponse) String() string { return proto.CompactTextString(m) }
func (*NodesResponse) ProtoMessage() {}
func (*NodesResponse) Descriptor() ([]byte, []int) {
return fileDescriptor_0b7953b26a7c4730, []int{2}
return fileDescriptor_0b7953b26a7c4730, []int{4}
}
func (m *NodesResponse) XXX_Unmarshal(b []byte) error {
@ -189,7 +259,7 @@ func (m *GraphRequest) Reset() { *m = GraphRequest{} }
func (m *GraphRequest) String() string { return proto.CompactTextString(m) }
func (*GraphRequest) ProtoMessage() {}
func (*GraphRequest) Descriptor() ([]byte, []int) {
return fileDescriptor_0b7953b26a7c4730, []int{3}
return fileDescriptor_0b7953b26a7c4730, []int{5}
}
func (m *GraphRequest) XXX_Unmarshal(b []byte) error {
@ -228,7 +298,7 @@ func (m *GraphResponse) Reset() { *m = GraphResponse{} }
func (m *GraphResponse) String() string { return proto.CompactTextString(m) }
func (*GraphResponse) ProtoMessage() {}
func (*GraphResponse) Descriptor() ([]byte, []int) {
return fileDescriptor_0b7953b26a7c4730, []int{4}
return fileDescriptor_0b7953b26a7c4730, []int{6}
}
func (m *GraphResponse) XXX_Unmarshal(b []byte) error {
@ -268,7 +338,7 @@ func (m *RoutesRequest) Reset() { *m = RoutesRequest{} }
func (m *RoutesRequest) String() string { return proto.CompactTextString(m) }
func (*RoutesRequest) ProtoMessage() {}
func (*RoutesRequest) Descriptor() ([]byte, []int) {
return fileDescriptor_0b7953b26a7c4730, []int{5}
return fileDescriptor_0b7953b26a7c4730, []int{7}
}
func (m *RoutesRequest) XXX_Unmarshal(b []byte) error {
@ -307,7 +377,7 @@ func (m *RoutesResponse) Reset() { *m = RoutesResponse{} }
func (m *RoutesResponse) String() string { return proto.CompactTextString(m) }
func (*RoutesResponse) ProtoMessage() {}
func (*RoutesResponse) Descriptor() ([]byte, []int) {
return fileDescriptor_0b7953b26a7c4730, []int{6}
return fileDescriptor_0b7953b26a7c4730, []int{8}
}
func (m *RoutesResponse) XXX_Unmarshal(b []byte) error {
@ -345,7 +415,7 @@ func (m *ServicesRequest) Reset() { *m = ServicesRequest{} }
func (m *ServicesRequest) String() string { return proto.CompactTextString(m) }
func (*ServicesRequest) ProtoMessage() {}
func (*ServicesRequest) Descriptor() ([]byte, []int) {
return fileDescriptor_0b7953b26a7c4730, []int{7}
return fileDescriptor_0b7953b26a7c4730, []int{9}
}
func (m *ServicesRequest) XXX_Unmarshal(b []byte) error {
@ -377,7 +447,7 @@ func (m *ServicesResponse) Reset() { *m = ServicesResponse{} }
func (m *ServicesResponse) String() string { return proto.CompactTextString(m) }
func (*ServicesResponse) ProtoMessage() {}
func (*ServicesResponse) Descriptor() ([]byte, []int) {
return fileDescriptor_0b7953b26a7c4730, []int{8}
return fileDescriptor_0b7953b26a7c4730, []int{10}
}
func (m *ServicesResponse) XXX_Unmarshal(b []byte) error {
@ -411,6 +481,10 @@ type Node struct {
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"`
// the network
Network string `protobuf:"bytes,3,opt,name=network,proto3" json:"network,omitempty"`
// associated metadata
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:"-"`
@ -420,7 +494,7 @@ 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_0b7953b26a7c4730, []int{9}
return fileDescriptor_0b7953b26a7c4730, []int{11}
}
func (m *Node) XXX_Unmarshal(b []byte) error {
@ -455,6 +529,20 @@ func (m *Node) GetAddress() string {
return ""
}
func (m *Node) GetNetwork() string {
if m != nil {
return m.Network
}
return ""
}
func (m *Node) GetMetadata() map[string]string {
if m != nil {
return m.Metadata
}
return nil
}
// Connect is sent when the node connects to the network
type Connect struct {
// network mode
@ -468,7 +556,7 @@ 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_0b7953b26a7c4730, []int{10}
return fileDescriptor_0b7953b26a7c4730, []int{12}
}
func (m *Connect) XXX_Unmarshal(b []byte) error {
@ -509,7 +597,7 @@ 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_0b7953b26a7c4730, []int{11}
return fileDescriptor_0b7953b26a7c4730, []int{13}
}
func (m *Close) XXX_Unmarshal(b []byte) error {
@ -552,7 +640,7 @@ func (m *Peer) Reset() { *m = Peer{} }
func (m *Peer) String() string { return proto.CompactTextString(m) }
func (*Peer) ProtoMessage() {}
func (*Peer) Descriptor() ([]byte, []int) {
return fileDescriptor_0b7953b26a7c4730, []int{12}
return fileDescriptor_0b7953b26a7c4730, []int{14}
}
func (m *Peer) XXX_Unmarshal(b []byte) error {
@ -589,6 +677,8 @@ func (m *Peer) GetPeers() []*Peer {
func init() {
proto.RegisterType((*Query)(nil), "go.micro.network.Query")
proto.RegisterType((*ConnectRequest)(nil), "go.micro.network.ConnectRequest")
proto.RegisterType((*ConnectResponse)(nil), "go.micro.network.ConnectResponse")
proto.RegisterType((*NodesRequest)(nil), "go.micro.network.NodesRequest")
proto.RegisterType((*NodesResponse)(nil), "go.micro.network.NodesResponse")
proto.RegisterType((*GraphRequest)(nil), "go.micro.network.GraphRequest")
@ -598,6 +688,7 @@ func init() {
proto.RegisterType((*ServicesRequest)(nil), "go.micro.network.ServicesRequest")
proto.RegisterType((*ServicesResponse)(nil), "go.micro.network.ServicesResponse")
proto.RegisterType((*Node)(nil), "go.micro.network.Node")
proto.RegisterMapType((map[string]string)(nil), "go.micro.network.Node.MetadataEntry")
proto.RegisterType((*Connect)(nil), "go.micro.network.Connect")
proto.RegisterType((*Close)(nil), "go.micro.network.Close")
proto.RegisterType((*Peer)(nil), "go.micro.network.Peer")
@ -608,38 +699,43 @@ func init() {
}
var fileDescriptor_0b7953b26a7c4730 = []byte{
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}
// Reference imports to suppress errors if they are not otherwise used.
@ -654,6 +750,8 @@ const _ = grpc.SupportPackageIsVersion4
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
type NetworkClient interface {
// Connect to the network
Connect(ctx context.Context, in *ConnectRequest, opts ...grpc.CallOption) (*ConnectResponse, error)
// Returns the entire network graph
Graph(ctx context.Context, in *GraphRequest, opts ...grpc.CallOption) (*GraphResponse, error)
// Returns a list of known nodes in the network
@ -672,6 +770,15 @@ func NewNetworkClient(cc *grpc.ClientConn) NetworkClient {
return &networkClient{cc}
}
func (c *networkClient) Connect(ctx context.Context, in *ConnectRequest, opts ...grpc.CallOption) (*ConnectResponse, error) {
out := new(ConnectResponse)
err := c.cc.Invoke(ctx, "/go.micro.network.Network/Connect", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *networkClient) Graph(ctx context.Context, in *GraphRequest, opts ...grpc.CallOption) (*GraphResponse, error) {
out := new(GraphResponse)
err := c.cc.Invoke(ctx, "/go.micro.network.Network/Graph", in, out, opts...)
@ -710,6 +817,8 @@ func (c *networkClient) Services(ctx context.Context, in *ServicesRequest, opts
// NetworkServer is the server API for Network service.
type NetworkServer interface {
// Connect to the network
Connect(context.Context, *ConnectRequest) (*ConnectResponse, error)
// Returns the entire network graph
Graph(context.Context, *GraphRequest) (*GraphResponse, error)
// Returns a list of known nodes in the network
@ -724,6 +833,24 @@ func RegisterNetworkServer(s *grpc.Server, srv NetworkServer) {
s.RegisterService(&_Network_serviceDesc, srv)
}
func _Network_Connect_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(ConnectRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(NetworkServer).Connect(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/go.micro.network.Network/Connect",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(NetworkServer).Connect(ctx, req.(*ConnectRequest))
}
return interceptor(ctx, in, info, handler)
}
func _Network_Graph_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(GraphRequest)
if err := dec(in); err != nil {
@ -800,6 +927,10 @@ var _Network_serviceDesc = grpc.ServiceDesc{
ServiceName: "go.micro.network.Network",
HandlerType: (*NetworkServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "Connect",
Handler: _Network_Connect_Handler,
},
{
MethodName: "Graph",
Handler: _Network_Graph_Handler,

12
network/proto/network.proto
View File

@ -6,6 +6,8 @@ import "github.com/micro/go-micro/router/proto/router.proto";
// Network service is usesd to gain visibility into networks
service Network {
// Connect to the network
rpc Connect(ConnectRequest) returns (ConnectResponse) {};
// Returns the entire network graph
rpc Graph(GraphRequest) returns (GraphResponse) {};
// Returns a list of known nodes in the network
@ -25,6 +27,12 @@ message Query {
string network = 5;
}
message ConnectRequest {
repeated Node nodes = 1;
}
message ConnectResponse {}
// PeerRequest requests list of peers
message NodesRequest {
// node topology depth
@ -67,6 +75,10 @@ message Node {
string id = 1;
// node address
string address = 2;
// the network
string network = 3;
// associated metadata
map<string,string> metadata = 4;
}
// Connect is sent when the node connects to the network

4
network/resolver/dns/dns.go
View File

@ -18,6 +18,10 @@ func (r *Resolver) Resolve(name string) ([]*resolver.Record, error) {
port = "8085"
}
if len(host) == 0 {
host = "localhost"
}
addrs, err := net.LookupHost(host)
if err != nil {
return nil, err

45
network/handler/handler.go → network/service/handler/handler.go
View File

@ -9,6 +9,7 @@ import (
pbNet "github.com/micro/go-micro/network/proto"
"github.com/micro/go-micro/router"
pbRtr "github.com/micro/go-micro/router/proto"
"github.com/micro/go-micro/util/log"
)
// Network implements network handler
@ -47,6 +48,50 @@ func flatten(n network.Node, visited map[string]bool) []network.Node {
return nodes
}
func (n *Network) Connect(ctx context.Context, req *pbNet.ConnectRequest, resp *pbNet.ConnectResponse) error {
if len(req.Nodes) == 0 {
return nil
}
// get list of existing nodes
nodes := n.Network.Options().Peers
// generate a node map
nodeMap := make(map[string]bool)
for _, node := range nodes {
nodeMap[node] = true
}
for _, node := range req.Nodes {
// TODO: we may have been provided a network only
// so process anad resolve node.Network
if len(node.Address) == 0 {
continue
}
// already exists
if _, ok := nodeMap[node.Address]; ok {
continue
}
nodeMap[node.Address] = true
nodes = append(nodes, node.Address)
}
log.Infof("Network.Connect setting peers: %v", nodes)
// reinitialise the peers
n.Network.Init(
network.Peers(nodes...),
)
// call the connect method
n.Network.Connect()
return nil
}
// Nodes returns the list of nodes
func (n *Network) Nodes(ctx context.Context, req *pbNet.NodesRequest, resp *pbNet.NodesResponse) error {
depth := uint(req.Depth)

44
tunnel/default.go
View File

@ -777,6 +777,30 @@ func (t *tun) setupLink(node string) (*link, error) {
return link, nil
}
func (t *tun) setupLinks() {
for _, node := range t.options.Nodes {
// skip zero length nodes
if len(node) == 0 {
continue
}
// link already exists
if _, ok := t.links[node]; ok {
continue
}
// connect to node and return link
link, err := t.setupLink(node)
if err != nil {
log.Debugf("Tunnel failed to establish node link to %s: %v", node, err)
continue
}
// save the link
t.links[node] = link
}
}
// connect the tunnel to all the nodes and listen for incoming tunnel connections
func (t *tun) connect() error {
l, err := t.options.Transport.Listen(t.options.Address)
@ -816,22 +840,8 @@ func (t *tun) connect() error {
}
}()
for _, node := range t.options.Nodes {
// skip zero length nodes
if len(node) == 0 {
continue
}
// connect to node and return link
link, err := t.setupLink(node)
if err != nil {
log.Debugf("Tunnel failed to establish node link to %s: %v", node, err)
continue
}
// save the link
t.links[node] = link
}
// setup links
t.setupLinks()
// process outbound messages to be sent
// process sends to all links
@ -850,6 +860,8 @@ func (t *tun) Connect() error {
// already connected
if t.connected {
// setup links
t.setupLinks()
return nil
}