TCP 同步传输：客户端发送，服务器段接收_.NET_编程开发_程序员俱乐部

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。

 

　　

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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。