Socket TCP 完整实例

（提示：CSDN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：