[Interest] Win:TLS error/OSX:backward compatibility

[Alexander Carôt]

> > Make sure QSslSocket::supportSsl() returns true. You have to ship the OpenSSL 
> > 1.1 libraries yourself, they are not part of Qt, not even of the pre-built 
> > binaries.
> 

Done - work like a charm. Simply needed to include 

libeay32.dll
ssleay32.dll


into the main app's folder. Thanks a lot !

 
> > Qt 5.9 cannot do SSL/TLS in 2020 outside of a Mac. You must upgrade to 5.10 at 
> > a minimum. 


This issue is still existent: I failed with my build of 10.13 (missing symbol __chkstk_darwin in libSystem.B.dylib) despite specifying QMAKE_MACOSX_DEPLOYMENT_TARGET=10.13 - if anyone has further hits please let me know.

Best

Alex


 
> > Gesendet: Sonntag, 02. August 2020 um 19:31 Uhr
> > Von: "Thiago Macieira" <thiago.macieira at intel.com>
> > An: interest at qt-project.org
> > Betreff: Re: [Interest] Win:TLS error/OSX:backward compatibility
> >
> > On Saturday, 1 August 2020 00:13:21 PDT Alexander Carôt wrote:
> > > Hello all,
> > > 
> > > my software's websocket server is now running in secure mode including
> > > certificate integration. This works great apart from two details.
> > > 
> > > 1.) On some Windows machines I get the following error:
> > > 
> > > qt.network.ssl: QSslSocket::startServerEncryption: TLS initialization failed
> > > 
> > > I believe there are some missing libs on these machine but I am not sure how
> > > to resolve this issue conveniently.
> > 
> > That warning is printed when you try to use one of the QSslSocket functions 
> > that require OpenSSL and the OpenSSL libraries are not found.
> > 
> > Make sure QSslSocket::supportSsl() returns true. You have to ship the OpenSSL 
> > 1.1 libraries yourself, they are not part of Qt, not even of the pre-built 
> > binaries.
> > 
> > > 2.) In order to provide backward compatibility on OSX I am typically
> > > providing two versions: 10.15 and 10.14 are being compiled with the recent
> > > version of Qt. This binary launches with 10.13 but throws an errors about
> > > missing symbols in libSystem.B.dylib
> > 
> > Are you sure you built Qt with a minimum target version of 10.13?
> > 
> > > For 10.12 and lower I am compiling my app with Qt version 5.9 which works a
> > > usual but the new encryption calls obviously don't. With this version the
> > > SSL handshake between browser and app fails.
> > 
> > Qt 5.9 cannot do SSL/TLS in 2020 outside of a Mac. You must upgrade to 5.10 at 
> > a minimum. On a Mac, because Qt has used SecureTransport for years, it can 
> > work. But it could have issues I am not aware of.
> > 
> > Either way, Apple stopped supporting 10.12 last year.
> > 
> > > Can anyone send me hint how to provide backward compatibility at least to
> > > 10.13 (fixing the symbol issue) or lower (fixing the SSL issue) ?
> > 
> > You didn't say what symbols they were.
> > 
> > -- 
> > Thiago Macieira - thiago.macieira (AT) intel.com
> >   Software Architect - Intel DPG Cloud Engineering
> > 
> > 
> > 
> > _______________________________________________
> > Interest mailing list
> > Interest at qt-project.org
> > https://lists.qt-project.org/listinfo/interest
> >
> _______________________________________________
> Interest mailing list
> Interest at qt-project.org
> https://lists.qt-project.org/listinfo/interest
>