[Interest] ThreadedFortune example extending to send message forever

[Viktor Engelmann]

so you got the server running :-)

what was the problem?


Maybe it hangs inside waitForDisconnected? Have you tried waiting for
more than 30 seconds (the default timeout of the method)?

Do you hard-code the client side port number? the same
client-IP/client-Port/server-IP/server-Port combination cannot be used
again within 2 minutes after a disconnect - the operating system
suppresses that. That is to prevent late packets from the old connection
to be falsely passed to the new connection. After 2 minutes, such
packets must have timed out and be dropped, so the same combination can
be reused safely.

Regards

Viktor


Am 03.09.2016 um 18:13 schrieb Nilesh Kokane:
> Hello,
>
> I extended Threaded fortune to send message in infinite loop as below,
> but then it only send once and I get the socket error. I've not
> changed the fortune client but I only press Get fortune once and
> expect the message to be sent continuously which isn't a case.
>
> Is it really needed to abort() the tcpSocket from the client side and
> connectToHost per message? Doing so I get the incomingConnection and
> removing the forever loop of the below function it works as expected?
>
>
>
> void FortuneThread::run()
> {
>
>    forever
>     {
>         QTcpSocket tcpSocket;
>         QString temp_text =  text.at(qrand() % text.size());
>         qDebug() << "text from thread" << temp_text;
>         if (!tcpSocket.setSocketDescriptor(socketDescriptor)) {
>             emit error(tcpSocket.error());
>             qDebug() <<  "socket error";
>             return;
>         }
>         QByteArray block;
>         QDataStream out(&block, QIODevice::WriteOnly);
>         out.setVersion(QDataStream::Qt_4_0);
>         out << temp_text;
>         //! [3] //! [4]
>
>         tcpSocket.write(block);
>         tcpSocket.disconnectFromHost();
>         tcpSocket.waitForDisconnected();
>
>     }
>  }
> }
>
>
> Any clue?
>

-- 


Viktor Engelmann
Software Engineer

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