Socket通信简例

今天实践了Socket通信，不过是简单的控制台示例，在此做个笔记，希望可以帮到一些人，也希望抛砖引玉，得到大神的指点~

先说说Server端

1 . 确定端口及主机IP；

2 . 利用IP初始化IPAddress类型的实例；

3 . 利用端口及IPAddress类型的实例初始化IPEndPoint类的实例；

4 . 新建Socket对象，绑定IPEndPoint类的实例；

5 . Socket开始监听；

6 . 接收到Client端链接，建立新的Socket；

7 . 接收Client端消息；

8 . 返回给Client端消息；

9 . 关闭Step 6中Socket；

10 . 关闭Step 4中Socket；

View code：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Net;

using System.Net.Sockets;

namespace SocketTestServer

{

class Program

{

static void Main(string[] args)

{

//确定服务端端口及IP

int port = 2000;

string host = "127.0.0.1";

//利用IP创建IPAddress类型的实例

IPAddress ip = IPAddress.Parse(host);

//利用端口及IPAddress类型的实例创建IPEndPoint类的实例

IPEndPoint ipe = new IPEndPoint(ip, port);

//创建Socket对象

Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

//绑定IPEndPoint类的实例

s.Bind(ipe);

//Socket实例开始监听

s.Listen(0);

Console.WriteLine("Waiting Client connect Server！");

//接收到Client连接，为此连接建立新的Socket

Socket temp = s.Accept();//为新建连接创建新的socket

Console.WriteLine("Client Connected！");

while (true)

{

//接收Client端消息

string recvStr = "";

byte[] recvBytes = new byte[1024];

int bytes;

bytes = temp.Receive(recvBytes, recvBytes.Length, 0);

recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes);

Console.WriteLine("Server receive message : {0}", recvStr);

//当接收到Client端“exit”消息，则返回给Client端“Exit”消息，并关闭Server端Socket

if (recvStr.Equals("exit"))

{

Console.WriteLine("Client request close connect!");

string sendExitStr = "Exit";

byte[] bs_exit = Encoding.ASCII.GetBytes(sendExitStr);

temp.Send(bs_exit, bs_exit.Length, 0);

goto End;

}

//输入文字，返回给client端

Console.WriteLine("Input your message send to client!");

string sendStr = Console.ReadLine();

byte[] bs = Encoding.ASCII.GetBytes(sendStr);

temp.Send(bs, bs.Length, 0);

}

End:

{

//关闭Server端Socket

temp.Close();

s.Close();

Console.WriteLine("Socket Server closed!");

}

}

}

}

再来看Client端

1 . 确定端口及主机IP；

2 . 利用IP初始化IPAddress类型的实例；

3 . 利用端口及IPAddress类型的实例初始化IPEndPoint类的实例；

4 . 新建Socket对象；

5 . 向Server发送消息；

6 . 接收到Servert端返回的消息；

7 . 关闭Socket；

View code:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Net;

using System.Net.Sockets;

namespace SocketTestClient

{

class Program

{

static void Main(string[] args)

{

//确定Server端端口及IP

int port = 2000;

string host = "127.0.0.1";

//利用IP创建IPAddress类型的实例

IPAddress ip = IPAddress.Parse(host);

//利用端口及IPAddress类型的实例创建IPEndPoint类的实例

IPEndPoint ipe = new IPEndPoint(ip, port);

//创建socket并连接到服务器

Socket c = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

Console.WriteLine("Client Conneting…");

c.Connect(ipe);

while (true)

{

///向Server发送信息

Console.WriteLine("Please input your message!");

string sendStr = Console.ReadLine();

byte[] bs = Encoding.ASCII.GetBytes(sendStr);

Console.WriteLine("Send Message");

c.Send(bs, bs.Length, 0);

///接受从Server返回的信息

string recvStr = "";

byte[] recvBytes = new byte[1024];

int bytes;

bytes = c.Receive(recvBytes, recvBytes.Length, 0);

recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes);

Console.WriteLine("Client get message : {0}", recvStr);

//如果Server返回“Exit”消息，则关闭Client端Socket

if (recvStr.Equals("Exit"))

{

Console.WriteLine("Socket Server closed , Client close now!");

goto End;

}

}

End:

{

//关闭Client端Socket

c.Close();

Console.WriteLine("Client closed!");

}

}

}

}