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TCP 同步传输:客户端发送,服务器段接收

1、服务器端程序

  可以在TcpClient上调用GetStream()方法来获的链接到远程计算机的网络流NetworkStream。当在客户端调用时,他获的链接服务器端的流;当在服务器端调用时,他获得链接客户端的流。

 

  

class Program    {        static void Main(string[] args)        {            const int BufferSize = 8192;//缓存大小            Console.WriteLine("server is running ...");            IPAddress ip = new IPAddress(new byte[] { 192, 168, 1, 102 });//IP            TcpListener listener = new TcpListener(ip, 8500);            listener.Start();//开始侦听            Console.WriteLine("start listener ...");                    //获取一个链接中断方法            TcpClient remoteclient = listener.AcceptTcpClient();            //打印链接到客户端的信息            Console.WriteLine("client connected ! Local:{0}<-- Client:{1}", remoteclient.Client.LocalEndPoint, remoteclient.Client.RemoteEndPoint);                   //获取流,并写入Buffer中            NetworkStream streamToClient = remoteclient.GetStream();            byte[] buffer = new byte[BufferSize];            int bytesRead = streamToClient.Read(buffer, 0, BufferSize);            //获得请求字符串            string msg = Encoding.Unicode.GetString(buffer, 0, bytesRead);            Console.WriteLine("Received:{0}[{1}bytes]", msg, bytesRead);            Console.WriteLine("\n\n输入\"Q\"键退出。");            ConsoleKey key;            do            {                key = Console.ReadKey(true).Key;            } while (key != ConsoleKey.Q);        }    }
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  如果传递的数据字节比较大,如图片、音频等,则采用“分次读取然后转存”的方式,代码如下:

 

//获取字符串byte [] buffer = new byte[BufferSize];int bytesRead; //读取的字节数MemoryStream ms =new  MemoryStream();do{     bytesRead = streamToClient.Read(buffer,0,BufferSize);     ms.Write(buffer,0,bytesRead);       }while(bytesRead > 0);buffer = msStream.GetBuffer();string msg = Encoding.Unicode.GetString(buffer);
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2、客户端程序

  客户端向服务器发送字符串的代码与服务器端类似,先获取链接服务器端的流,将字符串保存到buffer缓存中,再写入流,写入流的过程就相当于将消息发送到服务器端。

 

class Program    {        static void Main(string[] args)        {            Console.WriteLine("client is running ...");            TcpClient clint;            try            {                clint = new TcpClient();            //与服务器建立连接                clint.Connect(IPAddress.Parse("192.168.1.102"), 8500);            }            catch (Exception ex)            {                Console.WriteLine(ex.Message);                return;            }         //打印连接到服务器端的信息            Console.WriteLine("client connected ! Local:{0}<-- Client:{1}", clint.Client.LocalEndPoint, clint.Client.RemoteEndPoint);        //要发送的信息            string msg = "hello";            NetworkStream streamToServer = clint.GetStream();            //获取缓存            byte[] buffer = Encoding.Unicode.GetBytes(msg);            //发送            streamToServer.Write(buffer, 0, buffer.Length);            Console.WriteLine("Sent:{0}", msg);            Console.WriteLine("\n\n输入\"Q\"键退出。");            ConsoleKey key;            do            {                key = Console.ReadKey(true).Key;            } while (key != ConsoleKey.Q);        }    }
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 这样就可以成功的发送和接收一个字符串了,如果想完成一些复杂的不间断的交互就需要自己做一些调整了。