[SOLVED] QLocalSocket::flush returns false, but sends data

[nikitablack]

Greetings,

In our project we're using server and socket for interprocess communication. But there's a strange thing occurs - sometimes QLocalSocket::flush() returns false. But data succesfully outgoes (I receive that data on client). Socket's errorString method returns "Unknown error". What can it be?

[andreyc]

"bool QLocalSocket::​flush()":http://doc.qt.io/qt-5/qlocalsocket.html#flush returns true If any data was written; otherwise false is returned.

So, in your case it means that flush did not send any data to a socket.
Why? Because all data already been sent by OS.

[EDIT]: "Unknow socket error" is a default value for socketError

[nikitablack]

Got this. Thank you.