Race condition when multiple network requests are open, and the remote socket is closed prematurely

QIODevice::write (QTcpSocket): device not open [spurious]

0	QIODevice::write	qiodevice.cpp	1289	0x50ff6ee5	
1	QIODevice::write	qiodevice.h	117	0x50e66773	
2	QHttpProtocolHandler::sendRequest	qhttpprotocolhandler.cpp	319	0x50c5d08f	
3	QHttpNetworkConnectionChannel::sendRequest	qhttpnetworkconnectionchannel.cpp	212	0x50c56393	
4	QHttpNetworkConnectionChannel::_q_connected	qhttpnetworkconnectionchannel.cpp	792	0x50c58281	
5	QHttpNetworkConnectionChannel::qt_static_metacall	moc_qhttpnetworkconnectionchannel_p.cpp	126	0x50c55321	
6	QMetaObject::activate	qobject.cpp	3713	0x5113b189	
7	QMetaObject::activate	qobject.cpp	3578	0x5113abd1	
8	QAbstractSocket::connected	moc_qabstractsocket.cpp	367	0x50cf6d7a	
9	QAbstractSocketPrivate::fetchConnectionParameters	qabstractsocket.cpp	1327	0x50cf95b3	
10	QAbstractSocketPrivate::_q_testConnection	qabstractsocket.cpp	1181	0x50cf8a91	
11	QAbstractSocketPrivate::connectionNotification	qabstractsocket.cpp	845	0x50cf7bbb	
12	QAbstractSocketEngine::connectionNotification	qabstractsocketengine.cpp	177	0x50ce562a	
13	QNativeSocketEngine::connectionNotification	qnativesocketengine.cpp	562	0x50d03baf	
14	QWriteNotifier::event	qnativesocketengine.cpp	1203	0x50d044a0	
15	QCoreApplicationPrivate::notify_helper	qcoreapplication.cpp	1094	0x510f9d2e	
16	QCoreApplication::notify	qcoreapplication.cpp	1038	0x510f82b3	
17	QCoreApplication::notifyInternal	qcoreapplication.cpp	965	0x510f9407	
18	QCoreApplication::sendEvent	qcoreapplication.h	224	0x51101c59	
19	qt_internal_proc	qeventdispatcher_win.cpp	398	0x51189b71	
...	<Mehr>