如何在 C# 中创建 UDP 服务器?

How do I make a UDP Server in C#?(如何在 C# 中创建 UDP 服务器?)
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问题描述

可能重复:
C#如何制作一个简单的UDP服务器

我想用 C# 制作一个 UDP 服务器.我怎么做?如何自定义监听哪个端口(即 1212)?

I want to make a UDP server in C#. How do I do that? How can I customize which port it listens on (namely 1212)?

推荐答案

这里有一个 C#中的示例:

/*
C# Network Programming 
by Richard Blum

Publisher: Sybex 
ISBN: 0782141765
*/
using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

public class UdpSrvrSample
{
   public static void Main()
   {
      byte[] data = new byte[1024];
      IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);
      UdpClient newsock = new UdpClient(ipep);

      Console.WriteLine("Waiting for a client...");

      IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);

      data = newsock.Receive(ref sender);

      Console.WriteLine("Message received from {0}:", sender.ToString());
      Console.WriteLine(Encoding.ASCII.GetString(data, 0, data.Length));

      string welcome = "Welcome to my test server";
      data = Encoding.ASCII.GetBytes(welcome);
      newsock.Send(data, data.Length, sender);

      while(true)
      {
         data = newsock.Receive(ref sender);

         Console.WriteLine(Encoding.ASCII.GetString(data, 0, data.Length));
         newsock.Send(data, data.Length, sender);
      }
   }
}

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