最近一个项目要C#做服务器给android发送图片和文本，但是android端接收图片老是出现问题!
  C#端发送图片
 public Byte[] getphoto(string photopath)         {             string str = photopath;             FileStream file = new FileStream(str, FileMode.Open, FileAccess.Read);             Byte[] bytBLOBData = new Byte[file.Length];             file.Read(bytBLOBData, 0, bytBLOBData.Length);             file.Close();             return bytBLOBData;         }         private void SendData(string data)         {             try            {                 Byte[] msg = getphoto(data);                 userList[0].socket.Send(msg, msg.Length, SocketFlags.None);                 MessageBox.Show("" + msg.Length);                 data = string.Format("To[{0}]:{1}", userList[0].socket.RemoteEndPoint.ToString(), data);                 listBoxStatu.Invoke(AppendString, data);             }             catch            {             }         }

Android端接收线程：

private class ReceiveThread extends Thread {         private BufferedInputStream dis = null;         private Socket s = null;           ReceiveThread(Socket socket) {             try {                 s = socket;                 dis = new BufferedInputStream(s.getInputStream());             } catch (IOException e) {                 // TODO Auto-generated catch block                 e.printStackTrace();             }         }           @Override        public void run() {             while (isConnect) {                 try {                     Thread.sleep(1000);                     ByteArrayOutputStream outStream = new ByteArrayOutputStream();                     byte[] buffer = new byte[ 1024];                     int len = -1;                     while ((len = dis.read(buffer)) != -1) {                         outStream.write(buffer, 0, len);                     }                     byte[] data = outStream.toByteArray();                     outStream.flush();                     outStream.close();                     BitmapFactory.Options options = new BitmapFactory.Options();                     options.inJustDecodeBounds = false;                     options.inSampleSize = 10; // width，hight设为原来的十分一                     if (data.length > 0) {                         bm = BitmapFactory.decodeByteArray(data, 0,                                 data.length, options);                         if (bm != null) {                             System.out.println(data.length);                             myHandler.sendEmptyMessage(0);                         }                     }                 } catch (Exception e) {                     // TODO Auto-generated catch block                     close();                 }             }         }     }

现在的问题是每次发送图片之后android端会一直堵塞卡在len = dis.read(buffer)，并不会返回-1，只有在关闭服务器之后才会返回-1并显示图片，这个显然是不行的，求各位帮帮忙看看到底是哪里的问题！
第一个确保网络连接成功了。在dos下面telnet一下服务器。
然后 len = dis.read(buffer) 这地方是阻塞了。不知道你后台有没有异常。

然后看看这个。

 userList[0].socket.Send(msg, msg.Length, SocketFlags.None); 不知道你的服务器socket是怎么处理的。