Very strange socket programming problem

[montylee]

just a wild guess, but can your C code send back the socket descriptor to the GUI code, and then let Qt close the socket?

then perhaps you can do something like this:

int sd = C_CodeFunction();
QUdpSocket *udp = new QUdpSocket;
if(udp->setSocketDescriptor(sd))
{
   QObject::connect(udp, SIGNAL(readyRead()), your_obj, SLOT(your_slot()));
}

int sd = C_CodeFunction();
QUdpSocket *udp = new QUdpSocket;
if(udp->setSocketDescriptor(sd))
{
   QObject::connect(udp, SIGNAL(readyRead()), your_obj, SLOT(your_slot()));
}

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or something to that effect.

wow!!! it worked I can't believe that your suggestion worked. I just passed the socket descriptor from C code to the Qt code and i am now able to read all messages in the Qt code.

Thanks a lot for replying and helping me in this issue

I still have no idea why i was not able to create a new socket and read the messages earlier.