Windows phone 7中的設備發現

我無法檢測到網絡中存在的設備。我正在使用兩個應用程序。一個是用C++編寫的，另一個是windows phone 7應用程序。從Wp7我發送UDP廣播，我從How to broadcast a UDP packet on WP7 Mango?引用我能夠從wp7廣播消息和在C++應用程序接收。但我無法從C++代碼接收UDP數據包。這是我的代碼。 C＃代碼Windows phone 7中的設備發現

private void PageTitle_Tap(object sender, GestureEventArgs e) 
     { 
      var ipAddress = IPAddress.Parse("255.255.255.255"); 
      var endpoint = new IPEndPoint(ipAddress, 4998); 
      byte[] data = Encoding.UTF8.GetBytes("hello|4998"); 
      var args = new SocketAsyncEventArgs(); 
      args.RemoteEndPoint = endpoint; 
      args.SetBuffer(data, 0, data.Length); 
      args.Completed += new EventHandler<SocketAsyncEventArgs>(args_Completed); 
      socket = new Socket(AddressFamily.InterNetwork, 
       SocketType.Dgram, 
       ProtocolType.Udp); 
      bool result = socket.ConnectAsync(args); 

     } 

     void args_Completed(object sender, SocketAsyncEventArgs e) 
     { 
      if (e.SocketError != SocketError.Success) 
      { 
       return; 
      } 

      switch (e.LastOperation) 
      { 
       case SocketAsyncOperation.Connect: 
        bool res = e.ConnectSocket.ReceiveFromAsync(e); 
        break; 

       case SocketAsyncOperation.Send: 
        break; 

       case SocketAsyncOperation.Receive: 
        break; 
      } 
     }

C++代碼

ServerAddress.sin_family= AF_INET; 
ServerAddress.sin_addr.s_addr= INADDR_ANY; 
ServerAddress.sin_port = htons (PORT_DESKTOP); 
ServerSocket = socket (PF_INET, SOCK_DGRAM, 0); 

sendto (ServerSocket, Buffer, sizeof (Buffer), 0, (LPSOCKADDR) &ClientAddress, Length);

我也用創建使用IPADDRESS.Any接收message.But另一個插座，我無法從C++代碼得到響應。

在此先感謝。

來源

2011-12-20 nucleons