Fix rpc go routine leak

util/socket/socket.go

@@ -9,6 +9,7 @@ import (
 
 // Socket is our pseudo socket for transport.Socket
 type Socket struct {
+	id string
 	// closed
 	closed chan bool
 	// remote addr
@@ -119,8 +120,9 @@ func (s *Socket) Close() error {
 // New returns a new pseudo socket which can be used in the place of a transport socket.
 // Messages are sent to the socket via Accept and receives from the socket via Process.
 // SetLocal/SetRemote should be called before using the socket.
-func New() *Socket {
+func New(id string) *Socket {
 	return &Socket{
+		id:     id,
 		closed: make(chan bool),
 		local:  "local",
 		remote: "remote",