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qmonkey
15th February 2011, 21:02
I have a client thread is blocked on QTcpSocket's waitForReadyRead(Timeout), other than receiving a message from server or reducing timeout length, how do I get out of the blocked state gracefully(basicly get out of the client waiting loop)?

Thanks in advance.

ars
15th February 2011, 22:32
Maybe you can use QIODevice::readyRead() signal instead of waitForReadyRead().

qmonkey
15th February 2011, 22:44
That's one option, but it requires a new design. I'm looking for a quick solution, if there is one:confused:

Thanks for the reply!

ars
15th February 2011, 23:01
What about (very quick and dirty)


bool dataAvailable = false;
QTime t;
t.start();

do
{
dataAvailable = waitForReadyRead(smallTimeout);
QApplication::processEvents();
}
while(!dataAvailable && (t.elapsed() < Timeout));

if(dataAvailable)
{
// process your data
}
else
{
// process timeout
}


Not a really nice way, but could work if you do not require precise timeout conditions.

qmonkey
16th February 2011, 15:43
ars,

That's not what I wanted. I want it stays blocked waiting for data, not timed out by itself, but have an option to get out at anytime.

drave
16th February 2011, 17:40
Its either waiting or it aint, you cant have it both ways. Close the socket your waiting on.

cheers

qmonkey
16th February 2011, 20:26
Look like non-blocking is the only way out. Thank you guys for the reply!