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關於C#socket通訊,分為同步和非同步通訊,本文簡單介紹一下同步通訊。
通訊兩端分別為用戶端(Client)和伺服器(Server):
(1)Cient:
1:建立一個Socket對像;
2:用socket對像的Connect()方法以上面建立的EndPoint對像做為參數,向伺服器發出串連請求;
3:如果串連成功,就用socket對像的Send()方法向伺服器發送資訊;
4:用socket對像的Receive()方法接受伺服器發來的資訊 ;
5:通訊結束後一定記得關閉socket;
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); //將IP地址字串轉換成IPAddress執行個體 ClientSocket = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);//使用指定的地址簇協議、通訊端類型和通訊協定 IPEndPoint endPoint = new IPEndPoint(ip, port); // 用指定的ip和連接埠號碼初始化IPEndPoint執行個體 ClientSocket.Connect(endPoint); //與遠程主機建立串連 Console.WriteLine("開始發送訊息"); byte[] message = Encoding.ASCII.GetBytes("Connect the Server"); //通訊時實際發送的是位元組數組,所以要將發送訊息轉換位元組 ClientSocket.Send(message); Console.WriteLine("發送訊息為:" + Encoding.ASCII.GetString(message)); byte[] receive = new byte[1024]; int length = ClientSocket.Receive(receive); // length 接收位元組數組長度 Console.WriteLine("接收訊息為:" + Encoding.ASCII.GetString(receive)); ClientSocket.Close(); //關閉串連 } }}
用戶端返回結果:
(2)Server:
1:建立一個Socket對像;
2:用socket對像的Bind()方法綁定EndPoint;
3:用socket對像的Listen()方法開始監聽;
4:接受到用戶端的串連,用socket對像的Accept()方法建立新的socket對像用於和請求的用戶端進行通訊;
5:用新的socket對象接收(Receive)和發送(Send)訊息。
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; // 偵聽所有網路客戶介面的客活動 ReceiveSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//使用指定的地址簇協議、通訊端類型和通訊協定
ReceiveSocket.SetSocketOption(SocketOptionLevel.Socket,SocketOptionName.ReuseAddress,true); //有關通訊端設定 IPEndPoint endPoint = new IPEndPoint(ip,port); ReceiveSocket.Bind(new IPEndPoint(ip, port)); //綁定IP地址和連接埠號碼 ReceiveSocket.Listen(10); //設定最多有10個排隊串連請求 Console.WriteLine("建立串連"); Socket socket = ReceiveSocket.Accept(); byte[] receive = new byte[1024]; socket.Receive(receive); Console.WriteLine("接收到訊息:" + Encoding.ASCII.GetString(receive)); byte[] send = Encoding.ASCII.GetBytes("Success receive the message,send the back the message"); socket.Send(send); Console.WriteLine("發送訊息為:"+Encoding.ASCII.GetString(send)); } }}
伺服器返回結果:
C#socket通訊