class1.cs

tcpip 通信 固定ip 端口

using System;
using System.Net.Sockets;
using System.IO;
using System.Net;

namespace ConsoleApplication1
{
	/// <summary>
	/// Class1 的摘要说明。
	/// </summary>
	class Class1
	{
		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		//		[STAThread]		

		public static bool islink = false;	
		public static NetworkStream netStream;
		public static StreamReader sr;
		public static TcpClient tcpClient;

		static void Main(string[] args)
		{
			
			int port=2005;//本地待侦听端口 
			IPAddress localAddr = IPAddress.Parse("192.168.1.139");
			TcpListener serverListener=new System.Net.Sockets.TcpListener(localAddr,port);//创建TcpListener对象实例 
			serverListener.Start(); //启动侦听 	
			islink=true; 
			while(true)//进入无限循环等待用户端连接 
				{ 
				   try 
					{ 
					   Console.Write("Waiting for a connection... ");					  

						tcpClient=serverListener.AcceptTcpClient();//创建客户端连接对象
 					  
					   Console.WriteLine("\n");

						Console.WriteLine("Connected!");

						netStream=tcpClient.GetStream();//得到网络流 

						sr=new StreamReader(netStream);//流读写器 

						string received=""; 

						received += sr.ReadLine();//读流中一行 

					    Console.WriteLine(received);

						sr.Close(); 

						netStream.Close(); 

						tcpClient.Close(); 			        
				   } 

				 catch(Exception re) 
					{ 
						Console.WriteLine(re.Message);
						Console.Read();
					} 
			
				}			
		}

	}
}