网络编程01

//服务端
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;

namespace learn
{
    class Program
    {
        const int portNo = 500;

        static void Main(string[] args)
        {
            IPAddress localAdd = IPAddress.Parse("127.0.0.1");

            TcpListener listener = new TcpListener(localAdd, portNo);
            listener.Start();

            TcpClient tcpClient = listener.AcceptTcpClient();

            NetworkStream ms = tcpClient.GetStream();
            byte[] data = new byte[tcpClient.ReceiveBufferSize];

            int numBytesRead = ms.Read(data, 0,System.Convert.ToInt32(tcpClient.ReceiveBufferSize));

            Console.WriteLine("Receiced:" + Encoding.ASCII.GetString(data, 0, numBytesRead));
            Console.ReadLine();
        }
    }
}

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

namespace Client_CS
{
    class Program
    {
        const int portNo = 500;
        static void Main(string[] args)
        {
            TcpClient tcpclient = new TcpClient();

            tcpclient.Connect("127.0.0.1", portNo);

            NetworkStream ns = tcpclient.GetStream();
            byte[] data = Encoding.ASCII.GetBytes("Hello");

            ns.Write(data, 0, data.Length);
        }
    }
}