Socket TCP 完整实例

（提示：优快云资源下载会自动增长积分，本来自己写的Socket.Helper 想免费分享一下，结果积分一直在涨，所以把实例发出来。遇到问题可以直接留言）

Soket 基本操作：
1、socket()函数
2、bind()函数
3、listen()、connect()函数
4、accept()函数
5、read()、write()函数等
6、close()函数

一 客户端：

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

namespace Client
{
    public partial class Client : Form
    {
        public Client()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            CheckForIllegalCrossThreadCalls = false;
            SocketConnection();
        }
        Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        IPEndPoint point = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 1024);
        //socket连接服务端
        public void SocketConnection()
        {
            client.Connect(point);
            ShowMsg("连接成功!");
            Thread th = new Thread(Receive);
            th.IsBackground = true;
            th.Start();
        }
        //接收数据
        void Receive()
        {
            while (true)
            {
                byte[] buff = new byte[1024 * 1024];
                int count = client.Receive(buff);
                string resuit = Encoding.ASCII.GetString(buff, 0, count);
                ShowMsg(client.RemoteEndPoint.ToString() + ":" + resuit);
            }
        }
        //数据展示
        void ShowMsg(string msg)
        {
            txtListen.AppendText(msg + "\r\n");
        }
        //数据发送
        private void btnSend_Click(object sender, EventArgs e)
        {
            byte[] buff = new byte[1024 * 1024];
            buff = Encoding.ASCII.GetBytes(txtSend.Text);
            client.Send(buff);
        }           
    }
}

二 服务端：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Server
{
    public partial class btnDic : Form
    {
        public btnDic()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            timer1.Start();
            Control.CheckForIllegalCrossThreadCalls = false;
            SocketConnection();
        }
        public static Dictionary<string, Socket> dic = new Dictionary<string, Socket>();
        public void SocketConnection()
        {
            Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            IPEndPoint point = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 1024);
            server.Bind(point);
            server.Listen(10);
            ShowMsg("开始监听......");

            Thread th = new Thread(Listen);
            th.IsBackground = true;
            th.Start(server);
        }
        void ShowMsg(string msg)
        {
            txtListen.AppendText(msg + "\r\n");
        }
        void Listen(object o)
        {
            Socket server = o as Socket;
            while (true)
            {
                Socket client = server.Accept();
                string point = client.RemoteEndPoint.ToString();
                ShowMsg(point + ":连接成功！");
                dic[point] = client;
                GetTreeViewData();
                Thread th = new Thread(Receive);
                th.IsBackground = true;
                th.Start(client);
            }
        }
        void Receive(object o)
        {
            Socket server = o as Socket;
            while (true)
            {
                byte[] buff = new byte[1024 * 1024];
                int count = server.Receive(buff);
                string resuit = Encoding.ASCII.GetString(buff, 0, count);
                ShowMsg(server.RemoteEndPoint + ":" + resuit);

            }
        }
        private void btnSend_Click(object sender, EventArgs e)
        {
            dic[treeView1.SelectedNode.Text].Send(Encoding.ASCII.GetBytes(txtSend.Text));
        }
        private void timer1_Tick(object sender, EventArgs e)
        {


        }

        private void huoq_Click(object sender, EventArgs e)
        {
            GetTreeViewData();
        }
   
        private void GetTreeViewData()
        {
            if (this.InvokeRequired)
            {
                CreateNodeDelegate createNodeDelegate = new CreateNodeDelegate(CreateNode);
                this.Invoke(createNodeDelegate);
            }
        }
        public delegate void CreateNodeDelegate();
        private void CreateNode()
        {
            treeView1.Nodes.Clear();

            foreach (var item in dic)
            {
                TreeNode Tn = new TreeNode();
                Tn.Text = item.Key;
                treeView1.Nodes.Add(Tn);
            }
          

        }
      
    }

}

三 界面样式：

多个客户端连接服务器时 ，“获取连接”可以得到连接列表


四 实现实例预览：