socket 服务器端：

1.创建socket

 Socket tcpClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//三个参数分别为枚举类型（网络），Socket类型，协议

2.绑定ip和端口号

IPAddress ipAddress = new IPAddress(new byte[] {192,168,119,1});
EndPoint point =new IPEndPoint(ipAddress,8811);
tcpServer .Bind(point);//绑定方法Bind()，IPEndPoint()封装ip和端口

3.开始监听

tcpServer.Listen(100);//参数为最大连接数

4.接收客户端

Socket clientSocket= tcpServer.Accept();

5.给客户端发信息

string message = "hello welcome!";
byte[] date = Encoding.UTF8.GetBytes(message);//Encoding()转码
clientSocket.Send(date);

6.接收客户端信息

byte[] date2=new byte[1024];
int length = clientSocket.Receive(date2);
string message2 = Encoding.UTF8.GetString(date2, 0, length);
Console.WriteLine("客户端发信息过来："+message2);

代码：

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

namespace SocketServer
{
class Program
{
static void Main(string[] args)
{

Socket tcpServer =new Socket( AddressFamily.InterNetwork,SocketType.Stream, ProtocolType.Tcp);
IPAddress ipAddress = new IPAddress(new byte[] {192,168,191,1});
EndPoint point =new IPEndPoint(ipAddress,8811);
tcpServer .Bind(point);
tcpServer.Listen(100);
Console.WriteLine("开始监听");

Socket clientSocket= tcpServer.Accept();
Console.WriteLine("一个客户端链接过来");
string message = "hello welcome!";
byte[] date = Encoding.UTF8.GetBytes(message);
clientSocket.Send(date);

byte[] date2=new byte[1024];
int length = clientSocket.Receive(date2);
string message2 = Encoding.UTF8.GetString(date2, 0, length);
Console.WriteLine("客户端发信息过来："+message2);

Console.ReadKey();
}
}
}

socket 客户端

1.创建socket

2.发起请求

tcpClient.Connect();

3.接收服务器端信息

4.向服务器端发信息

代码：

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

namespace SocketClient
{
class Program
{
static void Main(string[] args)
{
Socket tcpClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPAddress ipAddress=new IPAddress(new byte[]{192,168,191,1});
EndPoint point =new IPEndPoint(ipAddress,8811);
tcpClient.Connect(point);
byte[] date = new byte[1024];
int length= tcpClient.Receive(date);
string message = Encoding.UTF8.GetString(date, 0, length);
Console.WriteLine("服务器端发过来的信息："+message);

string message2 = Console.ReadLine();
tcpClient.Send(Encoding.UTF8.GetBytes(message2));
Console.ReadKey();
}
}
}

C# socket网络编程 基于TCP协议