Allow the socket to be specified

network/link/default.go

@@ -43,6 +43,7 @@ type link struct {
 
 func newLink(options options.Options) *link {
 	// default values
+	var sock transport.Socket
 	id := "local"
 	addr := "127.0.0.1:10001"
 	tr := transport.DefaultTransport
@@ -62,11 +63,19 @@ func newLink(options options.Options) *link {
 		tr = ltr.(transport.Transport)
 	}
 
+	lsock, ok := options.Values().Get("link.socket")
+	if ok {
+		sock = lsock.(transport.Socket)
+	}
+
 	l := &link{
 		// the remote end to dial
 		addr: addr,
 		// transport to dial link
 		transport: tr,
+		// the socket to use
+		// this is nil if not specified
+		socket: sock,
 		// unique id assigned to the link
 		id: id,
 		// the closed channel used to close the conn

network/link/link.go

@@ -14,7 +14,8 @@ import (
 type Link interface {
 	// provides the transport.Socket interface
 	transport.Socket
-	// Connect connects the link. It must be called first.
+	// Connect connects the link. It must be called first
+	// if there's an expectation to create a new socket.
 	Connect() error
 	// Id of the link is "local" if not specified
 	Id() string
@@ -40,12 +41,20 @@ func Id(id string) options.Option {
 	return options.WithValue("link.id", id)
 }
 
-// The address to use for the link
+// The address to use for the link. Connect must be
+// called for this to be used.
 func Address(a string) options.Option {
 	return options.WithValue("link.address", a)
 }
 
-// The transport to use for the link
+// The transport to use for the link where we
+// want to dial the connection first.
 func Transport(t transport.Transport) options.Option {
 	return options.WithValue("link.transport", t)
 }
+
+// Socket sets the socket where it was accepted
+// from a remote end.
+func Socket(s transport.Socket) options.Option {
+	return options.WithValue("link.socket", s)
+}