学习记录——C#实现简单网络通信

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace TcpServer
{
    class Program
    {
        static void Main(string[] args)
        {
        //建立连接
            Socket tcpServer = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);//使用IPV4插口,流类型进行数据传输，使用TCP协议

            IPAddress ipAddress = new IPAddress(new byte[] { 192, 168, 42, 104 });//ip地址

            IPEndPoint ipEndPoint = new IPEndPoint(ipAddress, 7788);//端口号

            tcpServer.Bind(ipEndPoint);

            tcpServer.Listen(100);
        //检测客户端的连接
            Console.WriteLine("服务器已启动");
            Socket client = tcpServer.Accept();
            Console.WriteLine("一个客户端连接过来了");

        //接收到消息并输出
            byte []data =new byte[1024];
            int length = client.Receive(data);
            string message = Encoding.UTF8.GetString(data, 0, length);
            Console.WriteLine("接收到客户端的消息："+message);
        //关闭连接  
            client.Close();
            tcpServer.Close();
        }
    }
}

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace TcpClient
{
    class Program
    {
        static void Main(string[] args)
        {
        //建立连接
            Socket tcpClient = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);

            IPAddress ipAddress = new IPAddress(new byte[] { 192, 168, 42, 104 });//ip地址

            IPEndPoint ipEndPoint = new IPEndPoint(ipAddress, 7788);//端口号

            tcpClient.Connect(ipEndPoint);
            Console.WriteLine("连接到服务器...");
            //tcpClient.Receive(new byte[]{22});
        //发送消息
            string message = "客户端发出了一条消息";
            tcpClient.Send(Encoding.UTF8.GetBytes(message));
        //关闭连接
            tcpClient.Close();
        }
    }
}

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace UDPServer
{
    class Program
    {
        static void Main(string[] args)
        {
        //建立连接
            Socket Udpserver = new Socket(AddressFamily.InterNetwork,SocketType.Dgram,ProtocolType.Udp);//连接，socket类型，协议类型

            IPAddress ipAddress = new IPAddress(new byte[] { 192, 168, 42, 104 });//ip地址

            IPEndPoint ipEndPoint = new IPEndPoint(ipAddress, 7788);//端口号

            Udpserver.Bind(ipEndPoint);
            
            Console.WriteLine("UDP服务器端已开启...");
         //接收数据
            IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 0);
            EndPoint ep = (EndPoint) ipep;
            byte[] data = new byte[1024];
            int length = Udpserver.ReceiveFrom(data,ref ep);
            Console.WriteLine("接收到的数据："+ Encoding.UTF8.GetString(data, 0, length));
        //关闭连接
            Udpserver.Close();
        }
    }
}

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace UdpClient
{
    class Program
    {
        static void Main(string[] args)
        {
        //建立连接
            Socket UdpClient = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);//连接，socket类型，协议类型
            IPAddress ipAddress = new IPAddress(new byte[] { 192, 168, 42, 104 });//ip地址
            IPEndPoint ipEndPoint = new IPEndPoint(ipAddress, 7788);//端口号
        //发送数据
            byte[] data = Encoding.UTF8.GetBytes("你好，UDP客户端上线了");
            UdpClient.SendTo(data, ipEndPoint);
        //关闭连接
            UdpClient.Close();
        }
    }
}