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 11.8k 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.
  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #31

    Still the same error or another one ?

    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
      #32

      Same error: TLS initialization failed

      1 Reply Last reply
      0
      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #33

        Did you check whether you can connect to another https resource and if it triggers the same 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
        0
        • M Offline
          M Offline
          Mikeeeeee
          wrote on last edited by
          #34

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

          jsulmJ Pablo J. RoginaP 2 Replies Last reply
          0
          • 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!
            1 Reply Last reply
            0
            • 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

                                          • Login

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