Ticket filled https://issues.qgis.org/issues/17866
> Le 16 janv. 2018 à 09:18, David Marteau <dmart...@3liz.com> a écrit : > > Hi Alessandro > > This is a weird bug, I have also found that once the first request failed, > others requests succeed wathever the url or the provider is (tried with wcs > and wms). > When failing, looking on what append wms server side when we found that no > request is sent. > > I fill a ticket on this. > > >>> The point is: trying to instanciate a wmsprovider will issue a timeout >>> when trying to request the capabilities: the code responsible for that >>> creates its own QEventLoop and manage to do a blocking call (which is >>> expected here). >>> Please have a look at >>> https://github.com/qgis/QGIS/blob/master/src/providers/wms/qgswmscapabilities.cpp#L1964 >>> >>> <https://github.com/qgis/QGIS/blob/master/src/providers/wms/qgswmscapabilities.cpp#L1964>. >>> What we do not understand is why, despite the call of loop.exec() in the >>> c++ code, the request is not processed (my example with the >>> Q(gs)etworkAccessManager >>> shows that it should processed) >>> >>> Actually you cannot instanciate properly a QgsProject with a WMS layer. >>> >>> To convince yourself, try to instanciate a QgsProject in python (in a >>> standalone python script) from a .qgs project having a single wms layer: it >>> will fail to instanciate the layer. >>> >> >> >> Hi David, >> >> I verified this issue, I'm sorry but I don't have an explanation right away >> and it looks like a bug, please file a ticket. >> >> >> -- >> Alessandro Pasotti >> w3: www.itopen.it <http://www.itopen.it/>
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