【17】Socket一个简单示例

• 1.建立两个项目SocketProgram服务器端，SocketClient客户端

• 2.服务器端代码

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

namespace SocketProgram
{
    class Program
    {
        static void Main(string[] args)
        {
            int port = 17000;
            string host = "127.0.0.1";
            IPAddress ip = IPAddress.Parse(host);
            IPEndPoint ipe = new IPEndPoint(ip, port);

            Socket sSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            sSocket.Bind(ipe);
            sSocket.Listen(10);
            Console.WriteLine("监听已经打开，请等待");

            //receive
            Socket serverSocket = sSocket.Accept();
            Console.WriteLine("连接已经建立");
            string recStr = "";
            byte[] recByte = new byte[4096];
            int bytes = serverSocket.Receive(recByte, recByte.Length, 0);
            recStr += Encoding.ASCII.GetString(recByte, 0, bytes);

            //send
            Console.WriteLine("服务器获得信息：{0}", recStr);
            string sendStr = "send to client : hello";
            byte[] sendByte = Encoding.ASCII.GetBytes(sendStr);
            serverSocket.Send(sendByte, sendByte.Length, 0);
            serverSocket.Close();
            sSocket.Close();
            Console.ReadLine();
        }
    }
}

• 3.客户端代码

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

namespace SocketClient
{
    class Program
    {
        static void Main(string[] args)
        {
            int port = 17000;
            string host = "127.0.0.1";

            IPAddress ip = IPAddress.Parse(host);
            IPEndPoint ipe = new IPEndPoint(ip, port);

            Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            clientSocket.Connect(ipe);

            //send
            string sendStr = "send to server : hello world";
            byte[] sendBytes = Encoding.ASCII.GetBytes(sendStr);
            clientSocket.Send(sendBytes);

            //receive
            string recStr = "";
            byte[] recBytes = new byte[4096];
            int bytes = clientSocket.Receive(recBytes, recBytes.Length, 0);
            recStr += Encoding.ASCII.GetString(recBytes, 0, bytes);
            Console.WriteLine(recStr);

            clientSocket.Close();
            Console.ReadLine();
        }
    }
}

• 4.先运行服务器端，然后运行客户端