套接字通信有关问题!救命用-C#教程-爱易网页

套接字通信有关问题!救命用

日期：2014-05-18　浏览次数：20826 次

套接字通信问题!救命用
我用的是UDP连接,在本地或者局域网都没有问题,可是放到服务器就不行了,怎么回事?

另外还有一个诡异的现象,另一个朋友编译的文件放在服务器当接收的,我自己这边发送就能收到
他的源码我编译一下,送到服务器上,就接收不到,各位帮我看看,是不是我写错了??

服务端:

C# code


using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace Test2
{
    class Program
    {
        static void Main(string[] args)
        {
            int recv;
            byte[] data = new byte[1024];

            //构建TCP 服务器

            //得到本机IP，设置TCP端口号         
            IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 63338);
            using (Socket newsock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp))
            {
                newsock.Bind(ipep);
                Console.WriteLine("绑定网络地址 {0}", Dns.GetHostName());
                Console.WriteLine("等待客户机连接");
                IPEndPoint aaa = new IPEndPoint(IPAddress.Any, 0);
                EndPoint Remote = (EndPoint)aaa;
                data = new byte[1024];
                recv = newsock.ReceiveFrom(data, ref Remote);
                Console.WriteLine("收到:" + Encoding.ASCII.GetString(data).Trim('\0'));
                string welcome = "Welcome ! ";
                data = Encoding.ASCII.GetBytes(welcome);
                newsock.SendTo(data, data.Length, SocketFlags.None, Remote);
                System.Threading.Thread.Sleep(200);
            }


        }
    }
}

客户端:

C# code


using System;
using System.Net;
using System.Net.Sockets;
using System.Text; 


namespace Test
{
    class Class1
    {

        static void Main(string[] args)
        {

            byte[] data;
            string input = "hee";
            string stringData;
            IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("223.4.21.***"), 63338);
            
            Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

            while (true)
            {
                Console.WriteLine("请输入!");
               input = Console.ReadLine();
                data = Encoding.ASCII.GetBytes(input);
                server.SendTo(data, data.Length, SocketFlags.None, ipep);

                IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
                EndPoint Remote = (EndPoint)sender;
                
                data = new byte[1024];
                int recv = server.ReceiveFrom(data, ref Remote);
                stringData = Encoding.ASCII.GetString(data, 0, recv);
                Console.WriteLine("收到:" + stringData);
            }
        }

    }
}

------解决方案--------------------
测了下你的客户端，没问题，服务器端改下

C# code


 public static void Main()
  {
   int recv;
   byte[] data = new byte[1024];
   IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);
   Socket newsock = new Socket(AddressFamily.InterNetwork,
           SocketType.Dgram, ProtocolType.Udp);
   newsock.Bind(ipep);
   Console.WriteLine("Waiting for a client...");
   IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
   EndPoint Remote = (EndPoint)(sender);
   recv = newsock.ReceiveFrom(data, ref Remote);
   Console.WriteLine("Message received from {0}:", Remote.ToString());
   Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
   string welcome = "Welcome to my test server";
   data = Encoding.ASCII.GetBytes(welcome);
   newsock.SendTo(data, data.Length, SocketFlags.None, Remote);
   while(true)
   {
     data = new byte[1024];
     recv = newsock.ReceiveFrom(data, ref Remote);
   
     Console.WriteLine(Encoding.ASCII.GetString(data, 0,

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