Android的通过LAN从C＃桌面应用程序接收UDP广播？ [英] Android Receive UDP broadcast from C# desktop app over LAN?

问题描述

我试图创建使用相同的Wi-Fi网络的多个Android设备在计算机上的应用程序断绝。
这些设备将通过接收UDP广播从它包含服务器IP数据发现服务器的IP。
我创建在Java在C＃和UDP接收样本UDP广播开始了，但我从来没有设法在Android端的数据包。这里是code：

I'm trying to create a sever application on PC for many android devices using the same wi-fi network. The devices will find the server's IP by receiving UDP broadcast from it contains the server IP data. I've started by creating a sample udp broadcaster in C# and udp receiver in java but I never managed to get the packet on the android side . here is the code :

C＃：

UdpClient listener = new UdpClient(listenPort);
IPEndPoint groupEP = new IPEndPoint(IPAddress.Broadcast, listenPort);
listener.Connect(groupEP);
listener.EnableBroadcast = true;
byte[] data = new byte[1024];
try
{
    while (!done)
    {
       Console.WriteLine("broadcast");

       Thread.Sleep(400);

       listener.Send(data,2);

     }

Android的code：

Android code :

DatagramSocket socket;
try {
    socket = new DatagramSocket(11000);
    socket.connect(getBroadcastAddress(), 11000);
    socket.setBroadcast(true);
    byte[] buf = new byte[4];
    DatagramPacket packet = new DatagramPacket(buf, buf.length);
    socket.receive(packet);

互联网权限在清单中正确设置。仍然无法接收数据包。

The Internet Permission is set correctly in the manifest. still not able to receive the packets.

推荐答案

建议：

• 请确保你没有任何防火墙（软件或硬件）阻止你

• Make sure you don't have any firewalls (software or hardware) blocking you

考虑使用Wireshark的：

Consider using Wireshark:

http://www.wireshark.org/

看看下面这个例子：

HTTP：//$c$c.google.com/p/ boxeeremote /维基/ AndroidUDP

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