Actually use UDP relay

proxy/vmess/config.go

@@ -46,7 +46,7 @@ func (config VNextConfig) HasNetwork(network string) bool {
 	return strings.Contains(config.Network, network)
 }
 
-func (config VNextConfig) ToVNextServer() VNextServer {
+func (config VNextConfig) ToVNextServer(network string) VNextServer {
 	users := make([]user.User, 0, len(config.Users))
 	for _, user := range config.Users {
 		vuser, err := user.ToUser()
@@ -60,10 +60,12 @@ func (config VNextConfig) ToVNextServer() VNextServer {
 		panic(log.Error("Unable to parse VNext IP: %s", config.Address))
 	}
 	address := v2net.IPAddress(ip, config.Port)
-	dest := v2net.NewTCPDestination(address)
-	if config.Network == "udp" {
-		dest = v2net.NewUDPDestination(address)
-	}
+  var dest v2net.Destination
+  if network == "tcp" {
+    dest = v2net.NewTCPDestination(address)
+  } else {
+    dest = v2net.NewUDPDestination(address)
+  }
 	return VNextServer{
 		Destination: dest,
 		Users:       users,

proxy/vmess/vmessout.go

@@ -99,7 +99,7 @@ func startCommunicate(request *protocol.VMessRequest, dest v2net.Destination, ra
 		}
 		return err
 	}
-	log.Info("VMessOut: Tunneling request for %s", request.Address.String())
+	log.Info("VMessOut: Tunneling request to %s via %s", request.Address.String(), dest.String())
 
 	defer conn.Close()
 
@@ -181,6 +181,7 @@ func handleResponse(conn net.Conn, request *protocol.VMessRequest, output chan<-
 		log.Warning("VMessOut: unexepcted response header. The connection is probably hijacked.")
 		return
 	}
+  log.Info("VMessOut received %d bytes from %s", len(buffer) - 4, conn.RemoteAddr().String())
 
 	output <- buffer[4:]
 
@@ -206,10 +207,10 @@ func (factory *VMessOutboundHandlerFactory) Initialize(rawConfig []byte) error {
 	udpServers := make([]VNextServer, 0, len(config.VNextList))
 	for _, server := range config.VNextList {
 		if server.HasNetwork("tcp") {
-			servers = append(servers, server.ToVNextServer())
+			servers = append(servers, server.ToVNextServer("tcp"))
 		}
 		if server.HasNetwork("udp") {
-			udpServers = append(udpServers, server.ToVNextServer())
+			udpServers = append(udpServers, server.ToVNextServer("udp"))
 		}
 	}
 	factory.servers = servers