How to connect via API?

[SGaist]

Are you sure you put the OpenSSL 1.0 dlls in the right folder ? Without mixing them with another version of OpenSSL.

[Mikeeeeee]

Sure. Here is the contents of the folder:

[mrjj]

hi
I wonder if it also wants libssl32.dll ?

[IRayman]

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

[Mikeeeeee]

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]

[SGaist]

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.

[Mikeeeeee]

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
}

[SGaist]

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

[Mikeeeeee]

Nothing comes back. I do not receive json document.

[SGaist]

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

[Mikeeeeee]

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

[Mikeeeeee]

This post is deleted!

[SGaist]

Maybe QNetworkReply::error ?

[Mikeeeeee]

I get "QNetworkReply::NoError"

[SGaist]

Did you also check QNetworkReply::sslErrors ?

[Mikeeeeee]

But it's a signal. And what should be placed instead of const QList<QSslError> &errors?

[jsulm]

@Mikeeeeee said in How to connect via API?:

But it's a signal

Yes, and you can connect a slot to a signal...
"And what should be placed instead of const QList<QSslError> &errors?" - ?
Nothing, you implement a slot with same parameter and connect it to the signal as usual:

void MyClass::handleSslErrors(const QList<QSslError> &errors)
{
...
}

[Mikeeeeee]

Did so, the slot does not work. So no mistakes.

connect(reply, & QNetworkReply::sslErrors , this,  &MainWindow::testSlotFromQDebug);

[Mikeeeeee]

The server seems to works too, because when you click on the link https://www.alphavantage.co/query?function=TIME_SERIES_DAILY_ADJUSTED&symbol=MSFT&outputsize=full&apikey=demo open the file. Maybe this is due to the fact that the file is large?

[SGaist]

I tested your query on macOS and it worked fine. What exact version of Windows are you using ?