TCPClient和TCPServer进行通讯的问题

[vick]

TCPClient和TCPServer进行通讯

程序开启时自动开一个线程开始监听，用的TCPServer

TCPClient发送数据给TCPServer，TCPServer先接收，然后处理，然后直接回复一个结果数据
TCPClient发送完之后立即变成接收状态，接收TCPServer的回复信息

发送程序：
tcpClient.Connect(IP, Port);
networkStream = tcpClient.GetStream();
if (networkStream.CanWrite)
{
byte[] buf = API.GetByteFromString(Context);
if (buf != null && buf.Length != 0)
{
networkStream.Write(buf, 0, buf.Length);
}
buf = new byte[1024];
networkStream.ReadTimeout = 10000;
int lens = 0;
networkStream.Read(buf, 0, buf.Length);


服务程序：
while (!bTerminated)
{
TcpClient client = server.AcceptTcpClient();
//Console.WriteLine("Connected!");

data = null;


// 获取一个数据流对象来进行读取和写入
NetworkStream stream = client.GetStream();
int i;

// 读取报文头35字节
API.ReadBytes(ref data, stream, 35);

//发送回复
string tmp = "1234";
stream.Write(Encoding.Default.GetBytes(tmp),0,4);


这样结果是，networkStream.Read(buf, 0, buf.Length);收不到东西，不设置ReadTimeout那就一直卡死，设置了收不到就到了异常处，是何原因，请指教！

请指点如何进行这种应用，这应该是很普通的应用，发个数据等服务端处理了返回处理结果，在C++里我都是直接发了就开始收等收够，在C#里为啥不行，还是因为这个自带的TCPServer/TCPClient的原因？

[yalan]

//
/*   Server Program    */
                 
using System;
using System.Text;
using System.Net;
using System.Net.Sockets;

public class serv {
    public static void Main() {
    try {
        IPAddress ipAd = IPAddress.Parse("172.21.5.99");
         // use local m/c IP address, and 
         // use the same in the client

/* Initializes the Listener */
        TcpListener myList=new TcpListener(ipAd,8001);

/* Start Listeneting at the specified port */        
        myList.Start();
        
        Console.WriteLine("The server is running at port 8001...");    
        Console.WriteLine("The local End point is  :" + 
                          myList.LocalEndpoint );
        Console.WriteLine("Waiting for a connection.....");
        
        Socket s=myList.AcceptSocket();
        Console.WriteLine("Connection accepted from " + s.RemoteEndPoint);
        
        byte[] b=new byte[100];
        int k=s.Receive(b);
        Console.WriteLine("Recieved...");
        for (int i=0;i<k;i++)
            Console.Write(Convert.ToChar(b[i]));

        ASCIIEncoding asen=new ASCIIEncoding();
        s.Send(asen.GetBytes("The string was recieved by the server."));
        Console.WriteLine("\nSent Acknowledgement");
/* clean up */            
        s.Close();
        myList.Stop();
            
    }
    catch (Exception e) {
        Console.WriteLine("Error..... " + e.StackTrace);
    }    
    }
    
}

---------------------------------------------------------------------------

/*       Client Program      */

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


public class clnt {

    public static void Main() {
        
        try {
            TcpClient tcpclnt = new TcpClient();
            Console.WriteLine("Connecting.....");
            
            tcpclnt.Connect("172.21.5.99",8001);
            // use the ipaddress as in the server program
            
            Console.WriteLine("Connected");
            Console.Write("Enter the string to be transmitted : ");
            
            String str=Console.ReadLine();
            Stream stm = tcpclnt.GetStream();
                        
            ASCIIEncoding asen= new ASCIIEncoding();
            byte[] ba=asen.GetBytes(str);
            Console.WriteLine("Transmitting.....");
            
            stm.Write(ba,0,ba.Length);
            
            byte[] bb=new byte[100];
            int k=stm.Read(bb,0,100);
            
            for (int i=0;i<k;i++)
                Console.Write(Convert.ToChar(bb[i]));
            
            tcpclnt.Close();
        }
        
        catch (Exception e) {
            Console.WriteLine("Error..... " + e.StackTrace);
        }
    }

}

//