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Simple TLS/SSL supported SMTP client for Qt5

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  • F Offline
    F Offline
    fab_
    wrote on last edited by
    #16

    Hello everyone.
    The last post is kinda long ago so I'm hoping the someone will read this:

    I have an application which is required to send emails. So I setup a local mailserver and pulled bluetiger9's code here:

    https://github.com/bluetiger9/SmtpClient-for-Qt

    I was able to build a shared .dll file in release Mode. Its 120kb in size.

    Could someone kindly help me out now on how I can use this dll in my application?
    Lets say i want to use it in my application in debug Mode. It looks like it isnt enough to put the .dll file in the corresponding folder. Im not sure what extra info to include about what I've done. Please let me know

    1 Reply Last reply
    0
    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #17

      Hi and welcome to devnet,

      Do you mean compile your application to use that library or use it when deploying your application ?

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

      1 Reply Last reply
      0
      • F Offline
        F Offline
        fab_
        wrote on last edited by
        #18

        Hello!

        It's both I guess.
        I want to use the functions that lib gives me in my code for my application.

        When i deploy the application i usually have to provide all neccessary dll files in the same folder (libmysql.dll) for example. So no static linking if thats what you're referring to.

        If you look at the github page of my first post. There is an example of its usage right on the front page. I'm trying to achieve to get this example to run properly.
        https://github.com/bluetiger9/SmtpClient-for-Qt

        After I made my first post I spent the rest of the night tinkering with it and I managed to get something going:

        Following this;
        https://wiki.qt.io/How_to_create_a_library_with_Qt_and_use_it_in_an_application
        I saw that MinGW (I use MinGW)creates a .dll and a .a file. I copied both those files in the folder containing the project where there supposed to be used. I also copied the header files in the same folder.

        Here is my .pro file:

        QT       += core
        QT       -= gui
        
        TARGET = SMTPEmailTestDLL
        CONFIG   += console
        CONFIG   -= app_bundle
        
        TEMPLATE = app
        
        win32:CONFIG (release, debug|release): LIBS += -L$$PWD/ -lSMTPEmail
        else:win32:CONFIG (debug, debug|release): LIBS += -L$$PWD/ -lSMTPEMail
        else:unix: LIBS += -L$$PWD/ -lSMTPEmail
        
        INCLUDEPATH += $$PWD/
        DEPENDPATH += $$PWD/
        
        SOURCES += main.cpp
        

        This actually enabled me to build and run the programm as seen on bluetiger9's github front page.

        But, upon running it either terminates with return value -1073741515 or I get the message that "The process to debug couldnt be adressed: wrong parameter"

        Weirdly, although receiving those messages, the programm sometimes actually sends an Email out to my gmail Account (be it with a wrong timestamp) as intended, but sometimes it just doenst.

        So I might've done something wrong on the way.
        I'm sorry if the information I'm giving is somewhat blurry. I appreciate you taking some time for this SGaist!

        O 1 Reply Last reply
        0
        • F Offline
          F Offline
          fab_
          wrote on last edited by
          #19

          Nevermind, I got it fixed. Turns out you shouldnt rename the dll file after building it. Its name should be the same as specified in TARGET

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          0
          • D Offline
            D Offline
            DoctorD
            wrote on last edited by
            #20

            I am using this with Qt 5.7. The email is successfuly sent but then I get this error in the end :

            Server response code: "221"
            Server response: "221 2.0.0 closing connection y144sm8277194wmd.18 - gsmtp\r\n"
            error QAbstractSocket::RemoteHostClosedError
            stateChanged QAbstractSocket::UnconnectedState
            disconneted
            error "The TLS/SSL connection has been closed"

            1 Reply Last reply
            0
            • MRenM Offline
              MRenM Offline
              MRen
              wrote on last edited by
              #21

              Hi, good one !

              Thanks for sharing !

              1 Reply Last reply
              0
              • N Offline
                N Offline
                nateliv
                Banned
                wrote on last edited by nateliv
                #22
                This post is deleted!
                1 Reply Last reply
                -1
                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #23

                  Did you check whether your server uses an outdated protocol that is either not supported anymore or disabled by default for security reasons.

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

                  1 Reply Last reply
                  0
                  • N Offline
                    N Offline
                    Nyrenthia
                    Banned
                    wrote on last edited by Nyrenthia
                    #24
                    This post is deleted!
                    1 Reply Last reply
                    0
                    • S Offline
                      S Offline
                      sanshow
                      Banned
                      wrote on last edited by
                      #25
                      This post is deleted!
                      1 Reply Last reply
                      0
                      • W Offline
                        W Offline
                        work
                        Banned
                        wrote on last edited by
                        #26
                        This post is deleted!
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                        0
                        • SGaistS SGaist

                          Did you install and openssl on your window machine ? Is your Qt built with SSL support ?

                          O Offline
                          O Offline
                          opengpu
                          wrote on last edited by
                          #27

                          @SGaist does the Qt-installer with SSL? i donot want to compile Qt by myself

                          1 Reply Last reply
                          0
                          • O Offline
                            O Offline
                            opengpu
                            wrote on last edited by
                            #28

                            @fab_ said in Simple TLS/SSL supported SMTP client for Qt5:

                            Hello everyone.

                            this post is long long ago, so does this is still work for current new version Qt?
                            and is there better SMTP Qt lib?

                            1 Reply Last reply
                            0
                            • F fab_

                              Hello!

                              It's both I guess.
                              I want to use the functions that lib gives me in my code for my application.

                              When i deploy the application i usually have to provide all neccessary dll files in the same folder (libmysql.dll) for example. So no static linking if thats what you're referring to.

                              If you look at the github page of my first post. There is an example of its usage right on the front page. I'm trying to achieve to get this example to run properly.
                              https://github.com/bluetiger9/SmtpClient-for-Qt

                              After I made my first post I spent the rest of the night tinkering with it and I managed to get something going:

                              Following this;
                              https://wiki.qt.io/How_to_create_a_library_with_Qt_and_use_it_in_an_application
                              I saw that MinGW (I use MinGW)creates a .dll and a .a file. I copied both those files in the folder containing the project where there supposed to be used. I also copied the header files in the same folder.

                              Here is my .pro file:

                              QT       += core
                              QT       -= gui
                              
                              TARGET = SMTPEmailTestDLL
                              CONFIG   += console
                              CONFIG   -= app_bundle
                              
                              TEMPLATE = app
                              
                              win32:CONFIG (release, debug|release): LIBS += -L$$PWD/ -lSMTPEmail
                              else:win32:CONFIG (debug, debug|release): LIBS += -L$$PWD/ -lSMTPEMail
                              else:unix: LIBS += -L$$PWD/ -lSMTPEmail
                              
                              INCLUDEPATH += $$PWD/
                              DEPENDPATH += $$PWD/
                              
                              SOURCES += main.cpp
                              

                              This actually enabled me to build and run the programm as seen on bluetiger9's github front page.

                              But, upon running it either terminates with return value -1073741515 or I get the message that "The process to debug couldnt be adressed: wrong parameter"

                              Weirdly, although receiving those messages, the programm sometimes actually sends an Email out to my gmail Account (be it with a wrong timestamp) as intended, but sometimes it just doenst.

                              So I might've done something wrong on the way.
                              I'm sorry if the information I'm giving is somewhat blurry. I appreciate you taking some time for this SGaist!

                              O Offline
                              O Offline
                              opengpu
                              wrote on last edited by
                              #29

                              @fab_

                              opengpu 36 minutes ago

                              anyone ever used libcurl to send email to smtp server?how many milliseconds it need for sending mail one time?is it fast enough to send email by libcurl in mainThread?

                              i tried this one, it works. but it's slow, as it needs about 3000 milliseconds for sending email one time.
                              https://github.com/bluetiger9/SmtpClient-for-Qt

                              aha_1980A 1 Reply Last reply
                              0
                              • O opengpu

                                @fab_

                                opengpu 36 minutes ago

                                anyone ever used libcurl to send email to smtp server?how many milliseconds it need for sending mail one time?is it fast enough to send email by libcurl in mainThread?

                                i tried this one, it works. but it's slow, as it needs about 3000 milliseconds for sending email one time.
                                https://github.com/bluetiger9/SmtpClient-for-Qt

                                aha_1980A Offline
                                aha_1980A Offline
                                aha_1980
                                Lifetime Qt Champion
                                wrote on last edited by
                                #30

                                @opengpu would you please stop spamming every e-mail related thread?

                                you have a concrete question, so ask it. provide example code so others understand your problem.

                                Regards

                                Qt has to stay free or it will die.

                                1 Reply Last reply
                                0
                                • K Offline
                                  K Offline
                                  KAHOOT
                                  Banned
                                  wrote on last edited by
                                  #31
                                  This post is deleted!
                                  1 Reply Last reply
                                  -1
                                  • C Offline
                                    C Offline
                                    carlsen8055
                                    Banned
                                    wrote on last edited by
                                    #32
                                    This post is deleted!
                                    1 Reply Last reply
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