Event Queue Stop during download

[bmn]

Hello,

I have a file synchronisation class which is responsible to sync files between an local directory and a respository. Within this class I am downloading files.
The problem I am facing is, that the application seems to stop/hang in the event queue while the file is downloading (after that it is proceeding and works as usual).

I used the default setting for connect, Qt::AutoConnection which seems to use a QueuedConnection when used with threads to add it to the threads event loop.
The network is managed with QNetworkAccessManager (_nam).

Signals/slots for all the operations (within the downloader):

_reply = _nam->get(QNetworkRequest(url));
connect(_reply, SIGNAL(finished()), this, SLOT(httpFinished()));
connect(_reply, SIGNAL(readyRead()), this, SLOT(httpReadyRead()));
connect(_reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(httpDownloadProgress(qint64,qint64)));

_reply = _nam->get(QNetworkRequest(url));
connect(_reply, SIGNAL(finished()), this, SLOT(httpFinished()));
connect(_reply, SIGNAL(readyRead()), this, SLOT(httpReadyRead()));
connect(_reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(httpDownloadProgress(qint64,qint64)));

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I tried to shift the the class (fSync contains the downloader class) in another thread:

fSync = new FSyncClass();
fSync->moveToThread(_thread);
connect(_thread, SIGNAL(finished()), _thread, SLOT(deleteLater()));
connect(_thread, SIGNAL(finished()), fSync, SLOT(deleteLater()));
_thread->start();

fSync = new FSyncClass();
fSync->moveToThread(_thread);
connect(_thread, SIGNAL(finished()), _thread, SLOT(deleteLater()));
connect(_thread, SIGNAL(finished()), fSync, SLOT(deleteLater()));
_thread->start();

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GDB shows:

Main Thread-ID: 0xb6781000           //I call currentThreadId() to get this debug output within the main event loop
[New Thread 0xb674b450 (LWP 1254)]        //gdb output
[New Thread 0xb5dff450 (LWP 1255)]         //gdb output
[New Thread 0xb53ff450 (LWP 1256)]         //gdb output
fSync Thread-ID: 0xb5dff450                     //I call currentThreadId() to get this debug output within the class moved to the thread

Main Thread-ID: 0xb6781000           //I call currentThreadId() to get this debug output within the main event loop
[New Thread 0xb674b450 (LWP 1254)]        //gdb output
[New Thread 0xb5dff450 (LWP 1255)]         //gdb output
[New Thread 0xb53ff450 (LWP 1256)]         //gdb output
fSync Thread-ID: 0xb5dff450                     //I call currentThreadId() to get this debug output within the class moved to the thread

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So it seems like the class is really running in a separate thread.


I am running out of ideas and would appreciate any help.

Thank you in advance.