Socket 学习（三）.1 tcp 通讯

实现了，局域网客户端 对客户端 的通讯。 实际上这是 一个 客户端 兼 服务端 。

2个阿里云服务器测试 效果图：

本地效果图：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;

namespace 模拟客服端01
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            TextBox.CheckForIllegalCrossThreadCalls = false;//禁止多线程检查
        }

        Socket socket_My;   //  主动建立连接套接字
        Socket socket_Listen; // 监听套接字
        Socket socket_Accept;   // 接收套接字
        Thread thread_Receive;//接收 线程
        Thread thread_Accept; // 发送线程

        public void Accept()
        {
            while (true)
            {
                socket_Accept = socket_Listen.Accept();  // 监听套接字  接收 请求 返回 接收套接字
                textBoxMag.AppendText("客户端连接成功！" + socket_Accept.RemoteEndPoint + "\r\n");
                thread_Accept = new Thread(Receive);
                thread_Accept.IsBackground = true;
                thread_Accept.Start();
            }
        }

        public void Receive()
        {
            while (true)
            {
                try
                {
                    byte[] B = new byte[];
                    socket_Accept.Receive(B);// 接收套接字 接收信息
                    string Message = Encoding.UTF8.GetString(B, , B.Length);
                    if (!string.IsNullOrEmpty(Message))
                    {
                        textBoxMag.AppendText(Message + "\r\n");
                    }
                }
                catch (Exception)
                {
                    textBoxMag.AppendText("连接关闭了" + "\r\n");
                    btn_Conncet.Enabled = false;
                    break;
                }

            }
        }

        private void StartListen_Click(object sender, EventArgs e)
        {
            socket_Listen = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            socket_Listen.Bind(new IPEndPoint(IPAddress.Any, int.Parse(textBoxMyPort.Text)));
            socket_Listen.Listen();
            textBoxMag.AppendText("开始监听" + "\r\n");
            thread_Receive = new Thread(Accept);
            thread_Receive.IsBackground = true;
            thread_Receive.Start();
            StartListen.Enabled = false;
        }

        private void btn_Conncet_Click(object sender, EventArgs e)
        {
            try
            {
                socket_My = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                socket_My.Connect(new IPEndPoint(IPAddress.Parse(textBoxIP.Text), int.Parse(textBoxPort.Text)));
                btn_Conncet.Enabled = false;
            }
            catch (Exception ex)
            {

                textBoxMag.AppendText("连接不上" + "\r\n");
            }
        }

        private void button_Send_Click(object sender, EventArgs e)
        {
            try
            {
                socket_My.Send(Encoding.UTF8.GetBytes(textBoxSend.Text + "\r\n"));
            }
            catch (Exception)
            {
                textBoxMag.AppendText("发送失败" + "\r\n");
            }
        }

    }
}

这里指明了 端口号，和IP ,接下来 ，做一个服务端 记录 它说有客户端的 IP  的通讯端口就好了。