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QSslSocket Behaviour Linux vs macOS (possibly LibreSSL incompatibilities?)

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #33

    Looking for something else, I stumble on this bug of Curl which I wonder if it relates to the problem at end.

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    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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    • SGaistS SGaist

      Looking for something else, I stumble on this bug of Curl which I wonder if it relates to the problem at end.

      M Offline
      M Offline
      Markus M.
      wrote on last edited by Markus M.
      #34

      @SGaist said in QSslSocket Behaviour Linux vs macOS (possibly LibreSSL incompatibilities?):

      bug of Curl

      I doubt it: the bug seems to address Yosemite; my issues are for one: on High Sierra and for two: consistent over various platforms (OpenSuSE, Ubuntu; Mac).

      Besides - why curl? I am not knowingly using curl for that project. Is it somehow used by Qt under the hood?

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      • M Markus M.

        @SGaist said in QSslSocket Behaviour Linux vs macOS (possibly LibreSSL incompatibilities?):

        bug of Curl

        I doubt it: the bug seems to address Yosemite; my issues are for one: on High Sierra and for two: consistent over various platforms (OpenSuSE, Ubuntu; Mac).

        Besides - why curl? I am not knowingly using curl for that project. Is it somehow used by Qt under the hood?

        M Offline
        M Offline
        Markus M.
        wrote on last edited by
        #35

        Hello.. as a follow up: I am not aware of the changes that took place under the hood in Qt 5.12.

        However, the issues as described apparently are fixed now; i.e. I am now using Qt 5.12.0 as provided/updated using the Qt Maintenance Tool.

        In more detail: I had to use the custom compiled Qt 5.10.0 in order to be able to connect to my QSsl - based development server under macOS.
        With the latest update to Qt 5.12.0 everything works as intended out of the box, no custom Qt/SSL compilation required any more.

        Thx for fixing this!

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #36

          Glad it's working now and thanks for the feedback !

          Additonal note, I never wrote that this was a curl problem or bug that was affecting your application. Only that the bug report I found could give some additonal clues to look into to fix your problem.

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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          • SGaistS SGaist

            Glad it's working now and thanks for the feedback !

            Additonal note, I never wrote that this was a curl problem or bug that was affecting your application. Only that the bug report I found could give some additonal clues to look into to fix your problem.

            M Offline
            M Offline
            Markus M.
            wrote on last edited by Markus M.
            #37

            @SGaist Actually the post above may have been a bit premature. Not sure what is going on: I updated 2 machines to Qt 5.12.0.

            On my workstation, it is working as intended and described in the previous post.

            Since I assumed the issues have been fixed I also updated my Macbook only to find out the failed handshake still occurs.

            Currently I am in the process of investigating what is going on - mentioned computers installations are very similar. All I know for now is that the handshake failures occur only on one computer with standard Qt installation.
            I suspect the cause is somehow tied to libssl.a/libcrypto.a, perhaps different ssl version or something like that.

            I'll keep you advised if I find out what's going on

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #38

              The one problem I can see is that OpenSSL is not used on macOS since a few Qt versions. Qt use the SecureTransport framework from macOS. You can still use OpenSSL though but you have to build Qt yourself for that as well as get a recent version of OpenSSL.

              Interested in AI ? www.idiap.ch
              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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              • SGaistS SGaist

                The one problem I can see is that OpenSSL is not used on macOS since a few Qt versions. Qt use the SecureTransport framework from macOS. You can still use OpenSSL though but you have to build Qt yourself for that as well as get a recent version of OpenSSL.

                M Offline
                M Offline
                Markus M.
                wrote on last edited by Markus M.
                #39

                @SGaist I know - I did compile Qt with OpenSSL 1.0.2o a couple of months ago (Qt 5.10.0).
                Unfortunately later versions Qt failed to compile using this config - never figured out why; for the lack of time I just went ahead using mentioned custom compiled version.

                Yesterday I randomly checked if my server compiles/works using 5.12.0 - and to my surprise it did (on my workstation).
                It still doesn't on the Macbook what puzzles me...

                otool -L indicates everything is similar. The binary compiled on the workstation also does not work on the notebook - so clearly some dynamically linked library causing this. If only I knew which one

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                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #40

                  Any difference of macOS versions ?

                  Any hint from the logs on the system ?

                  Just in case, IIRC, since 5.10 Qt supports also OpenSSL 1.1

                  Interested in AI ? www.idiap.ch
                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                  • SGaistS SGaist

                    Any difference of macOS versions ?

                    Any hint from the logs on the system ?

                    Just in case, IIRC, since 5.10 Qt supports also OpenSSL 1.1

                    M Offline
                    M Offline
                    Markus M.
                    wrote on last edited by
                    #41

                    @SGaist Nope. Same OS version, same Qt version... hence my surprise. I tried OpenSSL 1.1, but it seems incompatible with earlier versions as well as with the SSL classes in JDK, which my clients use. So no option for now

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                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #42

                      OpenSSL 1.1 requires a different backend. The 1.1 release broke API and ABI compatibility with the 1.0 release, hence you have to do a specific build of Qt or any library/application using OpenSSL.

                      Interested in AI ? www.idiap.ch
                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                      • SGaistS SGaist

                        OpenSSL 1.1 requires a different backend. The 1.1 release broke API and ABI compatibility with the 1.0 release, hence you have to do a specific build of Qt or any library/application using OpenSSL.

                        M Offline
                        M Offline
                        Markus M.
                        wrote on last edited by
                        #43

                        @SGaist I did a fresh macOS install using a VM and can confirm the issue is resolved in stock macOS High Sierra using XCode 9.4.1, Command Line Tools 10.1 for High Sierra and standard Qt 5.12.0 installation.

                        Guess I have to find some path/ssl lib or similar getting in the way on my Macbook, but this should not be any of your concern.

                        Again, thanks for support.

                        Issue solved.

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                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #44

                          You're welcome !

                          Then please mark the thread as solved using the "Topic Tools" button so other forum users may know a solution has been found :)

                          Interested in AI ? www.idiap.ch
                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                          • SGaistS SGaist

                            You're welcome !

                            Then please mark the thread as solved using the "Topic Tools" button so other forum users may know a solution has been found :)

                            M Offline
                            M Offline
                            Markus M.
                            wrote on last edited by Markus M.
                            #45

                            @SGaist Done!

                            Fyi: did not find what was wrong; after a clean install everything is working as intended.

                            Thx

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                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #46

                              Software mysteries... You may have gremlins playing with your machine ;-)

                              Interested in AI ? www.idiap.ch
                              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                              • SGaistS SGaist

                                Software mysteries... You may have gremlins playing with your machine ;-)

                                M Offline
                                M Offline
                                Markus M.
                                wrote on last edited by
                                #47

                                @SGaist Yeh, pretty likely :-)

                                Checked every single dylib, libcrypto.* libssl.*, but no luck. Reinstalling took me half the time in comparison to investigating the issue...

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