在 C# 中接收广播消息
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Receiving a broadcast message in C#
提问by Avik
I have tried a lot, but somehow there seems to be some problem with the code to receive a datagram that is broadcast by a remote host.
我已经尝试了很多，但不知何故，接收远程主机广播的数据报的代码似乎存在一些问题。
So could someone please provide me with the code to receive a broadcast message in C# using a UDP connection?
那么有人可以向我提供使用UDP连接在C#中接收广播消息的代码吗？
回答by Kasper Holdum
From http://www.java2s.com/Code/CSharp/Network/ReceiveBroadcast.htm
来自http://www.java2s.com/Code/CSharp/Network/ReceiveBroadcast.htm
/*
C# Network Programming
by Richard Blum
Publisher: Sybex
ISBN: 0782141765
*/
using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
public class RecvBroadcst
{
public static void Main()
{
Socket sock = new Socket(AddressFamily.InterNetwork,
SocketType.Dgram, ProtocolType.Udp);
IPEndPoint iep = new IPEndPoint(IPAddress.Any, 9050);
sock.Bind(iep);
EndPoint ep = (EndPoint)iep;
Console.WriteLine("Ready to receive...");
byte[] data = new byte[1024];
int recv = sock.ReceiveFrom(data, ref ep);
string stringData = Encoding.ASCII.GetString(data, 0, recv);
Console.WriteLine("received: {0} from: {1}",
stringData, ep.ToString());
data = new byte[1024];
recv = sock.ReceiveFrom(data, ref ep);
stringData = Encoding.ASCII.GetString(data, 0, recv);
Console.WriteLine("received: {0} from: {1}",
stringData, ep.ToString());
sock.Close();
}
}
