C# Socket TCP/IP 服务器代码_c#设置本地服务器端口-优快云博客

本文链接：https://blog.youkuaiyun.com/LIN943168247/article/details/103583519

本文介绍了一个基于C#的TCP通信实现，通过Socket编程完成服务器的监听与客户端的连接，详细展示了如何创建Socket、绑定IP地址和端口、监听连接请求、接收数据，并通过线程处理多个客户端连接。

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Net.Sockets;
using System.Threading;

namespace Sqlite2._0//命名空间
{
    class TCP
    {
        Socket socketwatch;
        bool Thread_Remove = false;//可以删掉
        public bool Listening = false;//告诉调用已经监听上了
        //创建一个新的Socket来负责通信
        public Socket socketsend;
        //传输并存储信息
        public string Received_Text
        {
            private set;
            get;
        }

        public event EventHandler OnMessageRecievedEvent;
        /*放在要调用TCP类的类里面，用队列来收集收到的消息
         private void Tcp_OnMessageRecievedEvent(object sender, EventArgs e)
        {
            lock (m_MessageQueue)
            {
                m_MessageQueue.Enqueue(m_Tcp.Received_Text);
            }
        }
       */

        public int TCP_Link(int num)
        {
            socketwatch = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            //创建一个对方的ip变量
            IPAddress ip = IPAddress.Any;
            //创建一个端口号
            IPEndPoint point = new IPEndPoint(ip, Convert.ToInt32(num));
            socketwatch.Bind(point);
            socketwatch.Listen(10);

            //创建线程进行监听
            Thread thread1 = new Thread(Listen);
            thread1.IsBackground = true;
            if (Thread_Remove == false)
            {

                thread1.Start(socketwatch);
                return 1;
            }
            else
            {
                thread1.Abort();
                return 0;
            }
        }


        public void Listen(object o)
        {
            //参数o转换为socket类型
            socketwatch = o as Socket;
            while (true)
            {
            

                socketsend = socketwatch.Accept();

                Thread thread2 = new Thread(Received); //创建线程进行接收
                thread2.IsBackground = true;
                if (Thread_Remove == false)
                {
                    thread2.Start(socketsend);
                    Listening = true;
                }
                else
                {
                    thread2.Abort();
                }
            }
           
        }




        public void Received(object o)
        {
            socketsend = o as Socket;
            try
            {
                while (true)
                {
                    byte[] date = new byte[1024 * 1024 * 3];
                    int count = socketsend.Receive(date);//得到Receive消息的字节数

                    Received_Text = Encoding.UTF8.GetString(date, 0, count);

                    if (OnMessageRecievedEvent != null)
                    {
                        OnMessageRecievedEvent(this, EventArgs.Empty);
                    }
                }
            }
            catch
            {

            }

        }
    }
}