[Interest] Using QWebSocketServer in a thread other than the GUI thread?

[Rainer Wiesenfarth]

Am 27.05.2015 um 15:49 schrieb Jérôme Godbout:
> Before making the moveToThread(), remove the parent of the object,
> ->setParent(nullptr);
> Once moved, you can reparent with object into that Thread.

The QWebSocketServer does not have a parent. The problem does not occur 
with this class itself, but with QNativeSocketEngine, which seems to 
exist somewhere in the depth of Qt.

The QNativeSocketEngine was created by Qt internals in the GUI thread 
context, but is now used by the QWebSocketServer which lives in a 
separate thread. Seems these two classes do not expect this to happen...

> [...]
> On Wed, May 27, 2015 at 3:43 AM, Rainer Wiesenfarth
> <Rainer_Wiesenfarth at trimble.com <mailto:Rainer_Wiesenfarth at trimble.com>>
> wrote:
>
>     (Qt 5.3.2 Windows msvc-2010 64bit)
>
>     I would like to add a QWebSocketServer to an existing application. I
>     would like to have all its operation handled by a thread different
>     from the GUI thread to get communication separated from the GUI part.
>
>     However, when I use moveToThread with the QWebServerSocket, I get
>     these warnings on incoming connections:
>
>        QObject: Cannot create children for a parent that is in a different
>          thread.
>          (Parent is QNativeSocketEngine(0x1b12ab0),
>            parent's thread is QThread( GUI_thread ),
>            current thread is QThread( communication_thread )
>
>     In addition, the disconnect event never comes through, probably as a
>     consequence of the warning.
>
>     Question: Is it possible to use QWebSocketServer in a thread other
>     than the GUI thread? How?
>
> [...]

Best Regards / Mit freundlichen Grüßen
Rainer Wiesenfarth

-- 
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