I am still very new to C++/Qt programming. I was hoping that someone could shed some light on something for me:

Qt Code: 
  1. void Thread::run()
  2. {
  3.   //initalize socket, start connection and detect data available
  4.   socket = new QTcpSocket;
  5.  
  6.   if (socket->setSocketDescriptor(sock)) 
  7.   {    
  8.     QString welcomeMsg = QString("Welcome to the middleMan\n\n");     
  9.     QByteArray block;
  10.     QDataStream out(&block, QIODevice::WriteOnly);
  11.     out.setVersion(QDataStream::Qt_4_0);
  12.     out << (quint16)0;
  13.     out << welcomeMsg;
  14.     out.device()->seek(0);
  15.     out << (quint16)(block.size() - sizeof(quint16));
  16.  
  17.     socket->write(block);
  18.   }
  19.  
  20.   while (socket->state() == QAbstractSocket::ConnectedState)
  21.   {
  22.  
  23.     if (socket->bytesAvailable() < 1)
  24.     {
  25.       qDebug("Waiting for data...");
  26.  
  27.       if (!socket->waitForReadyRead())
  28.         break;
  29.     }
  30.  
  31. //    while (socket->bytesAvailable() > 0)
  32. //    {
  33.       if (socket->bytesAvailable() > 0)
  34.       {
  35.         qDebug("Data available");
  36.  
  37.         QByteArray incomingBlock = socket->readAll();
  38.  
  39.         if (incomingBlock.contains("xml") && !incomingBlock.isEmpty())
  40.         {
  41.           dataHandler = new xmlDataHandler;
  42.  
  43.           dataHandler->doParse( &incomingBlock );
  44.         }
  45.  
  46.         /*
  47.         char c;
  48.  
  49.         socket->getChar(&c);
  50.  
  51.         printf("%c", c);
  52.         */
  53.       }
  54. //    }
  55.   }
  56.  
  57.   qDebug("Connection closed");  
  58. }
To copy to clipboard, switch view to plain text mode 

To explain a little bit. This is the run code for a thread that is created and started each time a new connection is requested. I am trying to stream short bits of dynamically created xml like data to the server from a client. I basically want to know when the end of a stream has been reached. How do you figure out the data that is coming across the socket. I assume the beginning of the stream is the header information. Then the data is passed. How do I separate those and only save the data and close the connection after the data is finished streaming? Thanks in advance. Even pointing to a good sockets tutorial would suffice.