Thread: Cannot read incoming data from socket

Hi

When I run the executable, it first receives the data and displays the data itself and the length of data in bytes. But, when I send another package to the server, it does not display anything!

Here is a prt from server code

Code:

   
char buffer[128];
.....
.....
while(1)
   {            
    if ((newsock=accept( sock,(sockaddr *)&remoteAddr,NULL))==SOCKET_ERROR)
     // some error checking
       int len;
       len=recv(newsock,buffer,sizeof(buffer),0);
     // some error checking
       
       cout << "Received data : "<< buffer << ". " << len << " bytes length." << endl;
       
   }

I think, what this code should does is to display the incoming data and return back to begining of while loop.

Why should I shut down the connection. "sock" is created out of the while loop and used for listening the connection.

The client program has a code like this

Code:

  while(1) {
   cin >> buffer;
   len=send(serverSocket,buffer,strlen(buffer),0);
     cout << len << " bytes sent\n";

   }

When sending first data, everything is ok! After that the server will not display any message that says something about arrival of any data!

The socket is blocking and te data I sent is transmitted successfully (it is 7-8 bytes long).

I tried closesocket() in the server code at the end of the while loop(). The result is the same, when I sent any data with client, it says "blabla bytes data sent", and the server only at first time displays "Received data : data itself comes here. blabla bytes length". But when i try to sent another data, the server does not receive any data.

I write a while(1) loop for the recv() call. That works!

Here is ths complete source code, you can check it. (Written with Dev-C++)
http://www4.gantep.edu.tr/~fni18444/trial.zip