Thank you, Marcus. It looks as though it is indeed an SSL issue, and it
appears as though I'm getting close to solving the problem. I got it to
work on my own personal computer - which is good. However, I haven't gotten
it to work on other computers as of yet.
I compiled OpenSSL, and I recompiled Qt 4.8.6 making sure SSL options were
enabled (and I linked the openssl libraries and included the openssl
include file). The QtNetwork4.dll grew about 200 kB in size (I believe
indicating the added SSL features). With all of that done, the network
features with those servers started working on my computer - as long as I
had libeay32.dll and ssleay32.dll in my PATH. I manually added them to the
install for now (for testing) to the AvoCPack.cmake:
file (GLOB libeay_DLL "C:/usr/local/ssl/bin/libeay32.dll")
file (GLOB ssleay_DLL "C:/usr/local/ssl/bin/ssleay32.dll")
install(FILES ${libeay_DLL} DESTINATION bin)
install(FILES ${ssleay_DLL} DESTINATION bin)
However, despite all of this, it doesn't seem to be working yet on the
Windows 7 computer I have here. On the Windows 7
computer, QSslSocket::supportsSsl() still returns true now despite the
https stuff not working (http://doc.qt.io/qt-4.8/qsslsocket.html#supportsSsl
).
I'm not entirely sure where to go from here. I'm going to try to recompile
Qt with the "-openssl-linked" flag (http://doc.qt.io/qt-4.8/ssl.html) to
see if that fixes it. Compiling Qt takes a while, though...
On Wed, Jun 8, 2016 at 8:20 PM, Marcus D. Hanwell <
marcus.hanw...@kitware.com> wrote:
> I can confirm that this used to work on Windows before the server
> changes. I built those binaries, but I also demonstrated the feature
> on a number of Windows machines. I think it is simply an SSL issue,
> and after a quick search found,
>
> http://stackoverflow.com/questions/3516143/qt-ssl-support-missing
>
> We had similar issues with CMake too, where the default binary did not
> distribute with SSL enabled due to export issues (i.e. mainly the US
> government defining strong encryption as a munition subject to export
> controls).
>
> I would suspect that this is the main cause, but it is not something
> that was ever a concern back then - few services used SSL. It looks
> like we would need to find and add Windows SSL DLLs to the
> distribution on Windows.
>
> On Wed, Jun 8, 2016 at 4:42 PM, Geoffrey Hutchison <geo...@pitt.edu>
> wrote:
> > I'm stumped. I had network fetch problems on Mac, but the issue was
> > redirects from HTTP -> HTTPS. That's fixed.
> >
> > I'm not sure where the problem would be for Windows..
> >
> >
> > From: Patrick Avery <psav...@buffalo.edu>
> >
> > Well, I ran a few tests. From what I can tell, the network features
> haven't
> > worked for a while for Windows. We have a lab laptop that runs Windows 7
> on
> > it. My personal laptop has Windows 10.
> >
> > I tested both Avogadro 1.2.0 and Avogadro 1.1.1 via this link:
> >
> http://sourceforge.net/projects/avogadro/files/avogadro/1.1.1/Avogadro-1.1.1-win32.exe/download
> >
> > Neither the IUPAC name nor the import molecule by chemical name worked
> for
> > any combination (Windows 7 Avogadro 1.1.1, Windows 7 Avogadro 1.2.0,
> Windows
> > 10 Avogadro 1.1.1, and Windows 10 Avogadro 1.2.0).
> >
> > So yeah, it doesn't look like the network features have been working for
> > Windows for a while. Perhaps no one noticed because most Windows users
> don't
> > use the network features...
> >
> > Oh, and the urls do use https except for this one:
> >
> https://github.com/cryos/avogadro/blob/50bef6066f81734f62f94e1b2ab06c34b9680dee/libavogadro/src/extensions/networkfetchextension.cpp#L108
> >
> > But that wasn't one I was testing with anyways.
> >
> >
> >
> >
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