openSSL in QT

saeid0034

sorry if this question asked before
anyone can help me to how use openssl in a project without need to build qt with openssl?
im want to post data to my https site
but its say qt.network.ssl: QSslSocket::connectToHostEncrypted: TLS initialization failed
how can i fix this

SGaist

Hi,

The usual first step is to install OpenSSL.

saeid0034

i want to use it on QNetworkReques and it everytime give me this error
i build openssl by myself and add lib to my project but nothing changed
i try to use precompiled openssl too but i still get same error

SGaist

Which OS ?
Which version of Qt ?
Which version of OpenSSL ?
How did you install Qt ?

saeid0034

@SGaist
window
QT 5.15.0
i test multi version like 1.1.1g, openssl-1.0.2a, and also precompiled openssl-1.1.1g-win64-mingw
i have two version of Qt
one i install normally from site (via installer)
and Qt static

SGaist

So I guess you are also using the MinGW build of Qt ?

saeid0034

@SGaist yes
i have mingw version
i also try openssl from this site

SGaist

Did you check that you have everything from the right architecture ?

saeid0034

@SGaist yes, i build openssl by qt mingw

saeid0034

when i check ssl version of qt with QSslSocket::sslLibraryBuildVersionString() it say "OpenSSL 1.1.1d 10 Sep 2019"
its mean i need to build version 1.1.1d?

saeid0034

i build openssl version 1.1.1d too
and add lib to my project
but still no luck
here my code and error

and also openssl part in pro file

win32: LIBS += -LD:/build/ver-1d-openssl/lib/ -lcrypto
win32: LIBS += -LD:/build/ver-1d-openssl/lib/ -lssl

INCLUDEPATH += D:/build/ver-1d-openssl/include
DEPENDPATH += D:/build/ver-1d-openssl/include

edit: when i add openssl dll in debug folder of my project its work just fine
but i need static

SGaist

Your application does not link to OpenSSL nor does Qt by default.

As for when running your application, the dlls must be findable. The usual way is to copy the files in the same folder as your application or modify the PATH environment variable in the Run part of the Project panel.

saeid0034

@SGaist yes by adding dll in exe folder im able to post data
but there is anyway to include openssl static?

jsulm

@saeid0034 said in openSSL in QT:

but there is anyway to include openssl static?

Not without building Qt by yourself as normal Qt builds load OpenSSL libs at runtime.

saeid0034

@jsulm can anyone tell me i need to pass what in ./configure to build qt with openssl statically
i use this for build qt static for now

configure -opensource -confirm-license -static -platform win32-g++ -optimize-size -opengl desktop -prefix "C:\Qt\static" -skip webengine -nomake tests -nomake examples -qt-zlib -qt-libjpeg -qt-libpng -qt-freetype -qt-pcre -qt-harfbuzz -qt-tiff

i need to add what to build qt static + openssl?

edit: i see this page in wiki
based of this page i need to build qt like this

OPENSSL_LIBS='-L/d/build/ssl/lib -lssl -lcrypto' && configure -opensource -confirm-license -static -platform win32-g++ -openssl-linked -optimize-size -opengl desktop -prefix "C:\Qt\static" -skip webengine -nomake tests -nomake examples -qt-zlib -qt-libjpeg -qt-libpng -qt-freetype -qt-pcre -qt-harfbuzz -qt-tiff

in this configure OPENSSL_LIBS is Location of openssl-1.1.1g i compiled before (with mingw)

its all ok?

jsulm

@saeid0034 said in openSSL in QT:

OPENSSL_LIBS='-L/d/build/ssl/lib -lssl -lcrypto

This looks like linking against shared OpenSSL libs.

saeid0034

@jsulm you say i do not need to set OPENSSL_LIBS?
and by the way i think this 2 lib use for shared version libssl.dll.a & libcrypto.dll.a

and also i use mingw to build openssl and Qt

Markus43

You don't need to rebuild Qt. Just select OpenSSL in the installer, and do what is suggested here:

https://stackoverflow.com/questions/59507538/install-openssl-for-msvc2017-on-64-bit-windows-10

saeid0034

@Markus43 thanks for reply, but i need openssl for static build

Markus43

Then the question is: Does OpenSSL need to be static, too?

If you can live with using OpenSSL dlls while using static Qt, you can just add the following to your configure line (also with OpenSSL from the installer) and you're done.
e.g. for x86 builds:

-openssl -I C:\Qt\Tools\OpenSSL\Win_x86\include -L C:\Qt\Tools\OpenSSL\Win_x86\lib