C# Socket 例子（控制台程序）

服务器代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.IO;namespace TCPListener
{class Program{static void Main(string[] args){const int BufferSize = 1024;Console.WriteLine("Sever is running....");IPAddress IP = new IPAddress(new byte[] { 127, 0,0,1 });TcpListener lister = new TcpListener(IP,8500);lister.Start();Console.WriteLine("Start Listering....");TcpClient remoteClient = lister.AcceptTcpClient();Console.WriteLine("Client Connected！{0} <-- {1}", remoteClient.Client.LocalEndPoint, remoteClient.Client.RemoteEndPoint);NetworkStream streamToClient = remoteClient.GetStream();try{while (true){byte[] buffer = new byte[BufferSize];int bytesRead = streamToClient.Read(buffer, 0, BufferSize);Console.WriteLine("Reading data {0} bytes....", bytesRead);// 获得请求的字符串string msg = Encoding.Unicode.GetString(buffer, 0, bytesRead);Console.WriteLine("Received: {0}", msg);//将字符串转换为大写msg = msg.ToUpper();buffer = Encoding.Unicode.GetBytes(msg);lock (streamToClient) {streamToClient.Write(buffer, 0, buffer.Length); }Console.WriteLine("Sent: {0}", msg);}}catch(Exception e) {remoteClient.Close();}//}Console.WriteLine("\n\n输入\"Q\"键退出。");streamToClient.Dispose();remoteClient.Close();ConsoleKey Key;do{Key = Console.ReadKey(true).Key;} while (Key != ConsoleKey.Q);}}
}

客户端代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;namespace TCPconnect
{class Program{static void Main(string[] args){string msg;const int BufferSize = 1024;IPAddress SeverIP =  IPAddress.Parse("127.0.0.1");Console.WriteLine("TCPClient is running");TcpClient Client;//for (int i = 0; i <= 2; i++)//{try{Client = new TcpClient();Client.Connect(SeverIP, 8500);}catch (Exception e){Console.WriteLine(e.Message);return;}Console.WriteLine("Sever Connected! {0}-->{1}", Client.Client.LocalEndPoint, Client.Client.RemoteEndPoint);//}Console.WriteLine("请输入发送的内容");NetworkStream StreamToSever = Client.GetStream();ConsoleKey key;Console.WriteLine("Menu: S - Send, X - Exit");do{key = Console.ReadKey(true).Key;if (key == ConsoleKey.S){msg = Console.ReadLine();byte[] buffer = Encoding.Unicode.GetBytes(msg);//获取缓存lock (StreamToSever){StreamToSever.Write(buffer, 0, buffer.Length);}Console.WriteLine("Sent:{0}", msg);int bytesRead;buffer = new byte[BufferSize];lock (StreamToSever){bytesRead = StreamToSever.Read(buffer, 0, BufferSize);}msg = Encoding.Unicode.GetString(buffer, 0,bytesRead);Console.WriteLine("Received: {0}", msg);}} while (key != ConsoleKey.X);Console.WriteLine("\n\n输入\"Q\"键退出。");ConsoleKey Key;do{Key = Console.ReadKey(true).Key;} while (Key != ConsoleKey.Q);}}
}