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How to connect via API?

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  • M Mikeeeeee

    Not check. I don't know what other resource to connect to.

    jsulmJ Offline
    jsulmJ Offline
    jsulm
    Lifetime Qt Champion
    wrote on last edited by
    #35
    This post is deleted!
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    • M Offline
      M Offline
      Mikeeeeee
      wrote on last edited by
      #36

      How to fix this error?

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      • M Mikeeeeee

        Not check. I don't know what other resource to connect to.

        Pablo J. RoginaP Offline
        Pablo J. RoginaP Offline
        Pablo J. Rogina
        wrote on last edited by
        #37

        @Mikeeeeee you may try a JSON testing site with secure connections, like https://jsonplaceholder.typicode.com

        i.e. https://jsonplaceholder.typicode.com/todos/1 will return:

        {
          "userId": 1,
          "id": 1,
          "title": "delectus aut autem",
          "completed": false
        }
        

        Upvote the answer(s) that helped you solve the issue
        Use "Topic Tools" button to mark your post as Solved
        Add screenshots via postimage.org
        Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

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        • M Offline
          M Offline
          Mikeeeeee
          wrote on last edited by
          #38

          @Pablo-J.-Rogina said in How to connect via API?:

          https://jsonplaceholder.typicode.com/todos/1

          Tried to send to this address and got an old error.

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          • M Offline
            M Offline
            Mikeeeeee
            wrote on last edited by
            #39

            And if you sent"http://json placeholder.typecode.com/todos/1" it works. Why https doesn't work?

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

              Just to be sure add this to your code:

              qDebug() << QSslSocket::supportsSsl();
              qDebug() << QSslSocket::sslLibraryBuildVersionString();
              qDebug() << QSslSocket::sslLibraryVersionString();
              

              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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              • M Offline
                M Offline
                Mikeeeeee
                wrote on last edited by
                #41

                qDebug returns:
                qt.network.ssl: QSslSocket::connectToHostEncrypted: TLS initialization failed
                false
                "OpenSSL 1.0.2p 14 Aug 2018"

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

                  Are you sure you put the OpenSSL 1.0 dlls in the right folder ? Without mixing them with another 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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                  • M Offline
                    M Offline
                    Mikeeeeee
                    wrote on last edited by
                    #43

                    Sure. Here is the contents of the folder:
                    0_1558769898345_1.png

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                    • mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on last edited by
                      #44

                      hi
                      I wonder if it also wants libssl32.dll ?

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                      • I Offline
                        I Offline
                        IRayman
                        wrote on last edited by
                        #45

                        hey @Mikeeeeee,

                        You can try those .dll. I used it few weeks ago when I needed Qt SSL on Windows and it worked fine.

                        https://anonfile.com/m2Z7N6s6nd/dll_zip

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                        • M Offline
                          M Offline
                          Mikeeeeee
                          wrote on last edited by SGaist
                          #46

                          Thanks. https is working.
                          Trying to use the function TIME_SERIES_DAILY_ADJUSTED.
                          https://www.alphavantage.co/documentation/
                          If you do so it works:

                          request.setUrl(QUrl("https://www.alphavantage.co/query?function=TIME_SERIES_DAILY_ADJUSTED&symbol=MSFT&outputsize=compact&apikey=XXXXXXXXXXXXX"));
                          

                          If doing so does not work:

                          request.setUrl(QUrl("https://www.alphavantage.co/query?function=TIME_SERIES_DAILY_ADJUSTED&symbol=MSFT&outputsize=full&apikey=XXXXXXXXXXXXXXX"));
                          

                          It's me doing something wrong or the server is not working?

                          [edit: removed API key SGaist]

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                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #47

                            Since you don't show how you are processing the QNetworkReply object created for your request one can only guess. What signals did you connect from the reply object ? What exactly do you mean by "does not work" ?

                            By the way, I've edited out your api key, it's not a good idea to post such information.

                            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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                            • M Offline
                              M Offline
                              Mikeeeeee
                              wrote on last edited by
                              #48

                              It's my h-file:

                              private slots:
                                  void on_testButton_clicked();
                                  void testSlotFromQDebug();
                                  void onReply(QNetworkReply* reply);
                              
                              private:
                                  Ui::MainWindow *ui;
                                  QNetworkAccessManager *apiQuery = new QNetworkAccessManager;
                              

                              it's cpp-file:```
                              #include "mainwindow.h"
                              #include "ui_mainwindow.h"

                              MainWindow::MainWindow(QWidget *parent) :
                              QMainWindow(parent),
                              ui(new Ui::MainWindow)
                              {
                              ui->setupUi(this);

                              //connect(apiQuery, &QNetworkAccessManager::finished, this, &MainWindow::testSlotFromQDebug);
                              

                              }

                              MainWindow::~MainWindow()
                              {
                              delete ui;
                              }

                              void MainWindow::on_testButton_clicked()
                              {
                              QNetworkRequest request;
                              //request.setUrl(QUrl("https://www.alphavantage.co/query?function=TIME_SERIES_DAILY_ADJUSTED&symbol=MSFT&apikey=demo"));
                              request.setUrl(QUrl("https://www.alphavantage.co/query?function=TIME_SERIES_DAILY_ADJUSTED&symbol=MSFT&outputsize=full&apikey=111111"));
                              //request.setUrl(QUrl("https://www.alphavantage.co/query?function=TIME_SERIES_DAILY_ADJUSTED&symbol=MSFT&outputsize=compact&apikey=1111"));

                              QNetworkReply* reply = apiQuery->get(request);
                              connect(reply ,&QNetworkReply::finished,this,std::bind(&MainWindow::onReply,this,reply ));
                              

                              }

                              void MainWindow::testSlotFromQDebug()
                              {
                              //qDebug()<<"point1";
                              }

                              void MainWindow::onReply(QNetworkReply* reply){
                              QJsonDocument jdoc = QJsonDocument::fromJson(reply->readAll());
                              //qDebug() << QSslSocket::supportsSsl();
                              //qDebug() << QSslSocket::sslLibraryBuildVersionString();
                              //qDebug() << QSslSocket::sslLibraryVersionString();
                              qDebug()<<jdoc;
                              // do something with the jdoc
                              }

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                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #49

                                Again: what do you mean by "it's not working" when using the full output size ?

                                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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                                • M Offline
                                  M Offline
                                  Mikeeeeee
                                  wrote on last edited by Mikeeeeee
                                  #50

                                  Nothing comes back. I do not receive json document.

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                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #51

                                    What about connecting the errors related signals ? That might give you some clues about what is happening.

                                    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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                                    • M Offline
                                      M Offline
                                      Mikeeeeee
                                      wrote on last edited by
                                      #52

                                      But what signals and slots to use to find the error?

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                                      • M Offline
                                        M Offline
                                        Mikeeeeee
                                        wrote on last edited by
                                        #53
                                        This post is deleted!
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                                        • SGaistS Offline
                                          SGaistS Offline
                                          SGaist
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #54

                                          Maybe QNetworkReply::error ?

                                          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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