C#socket通訊

關於C#socket通訊,分爲同步和異步通訊,本文簡單介紹一下同步通訊。數組

通訊兩端分別爲客戶端(Client)和服務器(Server):服務器

(1)Cient:網絡

1:創建一個Socket對像;異步

2:用socket對像的Connect()方法以上面創建的EndPoint對像作爲參數,向服務器發出鏈接請求;socket

3:若是鏈接成功,就用socket對像的Send()方法向服務器發送信息;spa

4:用socket對像的Receive()方法接受服務器發來的信息 ;對象

5:通訊結束後必定記得關閉socket;blog

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地址字符串轉換成IPAddress實例
            ClientSocket = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);//使用指定的地址簇協議、套接字類型和通訊協議
            IPEndPoint endPoint = new IPEndPoint(ip, port); // 用指定的ip和端口號初始化IPEndPoint實例
            ClientSocket.Connect(endPoint);  //與遠程主機創建鏈接


            Console.WriteLine("開始發送消息");
            byte[] message = Encoding.ASCII.GetBytes("Connect the Server");  //通訊時實際發送的是字節數組,因此要將發送消息轉換字節
            ClientSocket.Send(message);
            Console.WriteLine("發送消息爲:" + Encoding.ASCII.GetString(message));
            byte[] receive = new byte[1024];
            int length = ClientSocket.Receive(receive);  // length 接收字節數組長度
            Console.WriteLine("接收消息爲:" + Encoding.ASCII.GetString(receive));
            ClientSocket.Close();  //關閉鏈接
        }
    }
}

客戶端返回結果:接口

客戶端返回結果

 

(2)Server: ip

1:創建一個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:接受到客戶端的鏈接,用socket對像的Accept()方法建立新的socket對像用於和請求的客戶端進行通訊;

5:用新的socket對象接收(Receive)和發送(Send)消息。

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;  // 偵聽全部網絡客戶接口的客活動
            ReceiveSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//使用指定的地址簇協議、套接字類型和通訊協議   
ReceiveSocket.SetSocketOption(SocketOptionLevel.Socket,SocketOptionName.ReuseAddress,true); //有關套接字設置 IPEndPoint endPoint = new IPEndPoint(ip,port); ReceiveSocket.Bind(new IPEndPoint(ip, port)); //綁定IP地址和端口號 ReceiveSocket.Listen(10); //設定最多有10個排隊鏈接請求 Console.WriteLine("創建鏈接"); 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("發送消息爲:"+Encoding.ASCII.GetString(send)); } } }

 服務器返回結果:

 

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