Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. How to connect via API?
Forum Updated to NodeBB v4.3 + New Features

How to connect via API?

Scheduled Pinned Locked Moved Solved General and Desktop
66 Posts 8 Posters 19.0k Views 3 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • M Offline
    M Offline
    Mikeeeeee
    wrote on last edited by
    #36

    How to fix this error?

    1 Reply Last reply
    0
    • 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

      1 Reply Last reply
      0
      • 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.

        1 Reply Last reply
        0
        • 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?

          1 Reply Last reply
          0
          • 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

            1 Reply Last reply
            1
            • 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"

              1 Reply Last reply
              0
              • 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

                1 Reply Last reply
                0
                • M Offline
                  M Offline
                  Mikeeeeee
                  wrote on last edited by
                  #43

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

                  1 Reply Last reply
                  0
                  • mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #44

                    hi
                    I wonder if it also wants libssl32.dll ?

                    1 Reply Last reply
                    0
                    • 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

                      1 Reply Last reply
                      0
                      • 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]

                        1 Reply Last reply
                        0
                        • 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

                          1 Reply Last reply
                          1
                          • 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
                            }

                            1 Reply Last reply
                            0
                            • 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

                              1 Reply Last reply
                              0
                              • M Offline
                                M Offline
                                Mikeeeeee
                                wrote on last edited by Mikeeeeee
                                #50

                                Nothing comes back. I do not receive json document.

                                1 Reply Last reply
                                0
                                • 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

                                  1 Reply Last reply
                                  0
                                  • M Offline
                                    M Offline
                                    Mikeeeeee
                                    wrote on last edited by
                                    #52

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

                                    1 Reply Last reply
                                    0
                                    • M Offline
                                      M Offline
                                      Mikeeeeee
                                      wrote on last edited by
                                      #53
                                      This post is deleted!
                                      1 Reply Last reply
                                      0
                                      • 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

                                        1 Reply Last reply
                                        1
                                        • M Offline
                                          M Offline
                                          Mikeeeeee
                                          wrote on last edited by
                                          #55

                                          I get "QNetworkReply::NoError"

                                          1 Reply Last reply
                                          0

                                          • Login

                                          • Login or register to search.
                                          • First post
                                            Last post
                                          0
                                          • Categories
                                          • Recent
                                          • Tags
                                          • Popular
                                          • Users
                                          • Groups
                                          • Search
                                          • Get Qt Extensions
                                          • Unsolved