原文地址:https://www.cnblogs.com/sdyinfang/p/5519708.html
关于C#socket通信,分为同步和异步通信,本文简单介绍一下同步通信。
通信两端分别为客户端(Client)和服务器(Server):
(1)Cient:
1:建立一个Socket对像;
2:用socket对像的Connect()方法以上面建立的EndPoint对像做为参数,向服务器发出连接请求;
3:如果连接成功,就用socket对像的Send()方法向服务器发送信息;
4:用socket对像的Receive()方法接受服务器发来的信息 ;
5:通信结束后一定记得关闭socket;
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Net.Sockets; using System.Net; namespace Client { class Program { static Socket ClientSocket; static void Main( string [] args) { String IP = "127.0.0.1" ; int port =8885 ; IPAddress ip = IPAddress.Parse(IP); //将IP地址字符串转换成IPAddress实例 ClientSocket = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp); //使用指定的地址簇协议、套接字类型和通信协议 IPEndPoint endPoint = new IPEndPoint(ip, port); // 用指定的ip和端口号初始化IPEndPoint实例 ClientSocket.Connect(endPoint); //与远程主机建立连接 Console.WriteLine( "开始发送消息" ); byte [] message = Encoding.ASCII.GetBytes( "Connect the Server" ); //通信时实际发送的是字节数组,所以要将发送消息转换字节 ClientSocket.Send(message); Console.WriteLine( "发送消息为:" + Encoding.ASCII.GetString(message)); byte [] receive = new byte [1024]; int length = ClientSocket.Receive(receive); // length 接收字节数组长度 Console.WriteLine( "接收消息为:" + Encoding.ASCII.GetString(receive)); ClientSocket.Close(); //关闭连接 } } } |
客户端返回结果:
(2)Server:
1:建立一个Socket对像;
2:用socket对像的Bind()方法绑定EndPoint;
3:用socket对像的Listen()方法开始监听;
4:接受到客户端的连接,用socket对像的Accept()方法创建新的socket对像用于和请求的客户端进行通信;
5:用新的socket对象接收(Receive)和发送(Send)消息。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Net.Sockets; using System.Net; using System.Threading; namespace Server { class Program { static Socket ReceiveSocket; static void Main( string [] args) { int port = 8885; IPAddress ip = IPAddress.Any; // 侦听所有网络客户接口的客活动 ReceiveSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); //使用指定的地址簇协议、套接字类型和通信协议 <br> ReceiveSocket.SetSocketOption(SocketOptionLevel.Socket,SocketOptionName.ReuseAddress,true); //有关套接字设置 IPEndPoint endPoint = new IPEndPoint(ip,port); ReceiveSocket.Bind( new IPEndPoint(ip, port)); //绑定IP地址和端口号 ReceiveSocket.Listen(10); //设定最多有10个排队连接请求 Console.WriteLine( "建立连接" ); Socket socket = ReceiveSocket.Accept(); byte [] receive = new byte [1024]; socket.Receive(receive); Console.WriteLine( "接收到消息:" + Encoding.ASCII.GetString(receive)); byte [] send = Encoding.ASCII.GetBytes( "Success receive the message,send the back the message" ); socket.Send(send); Console.WriteLine( "发送消息为:" +Encoding.ASCII.GetString(send)); } } } |
服务器返回结果: