How to connect via API?

[Mikeeeeee]

Qt says: qt.network.ssl: QSslSocket::connectToHostEncrypted: TLS initialization failed
I have api-key: 63YUZ8NP5SW1D302
How can I use the key?

[VRonin]

Qt says: qt.network.ssl: QSslSocket::connectToHostEncrypted: TLS initialization failed

Make sure you have OpenSSL installed

I have api-key: 63YUZ8NP5SW1D302
How can I use the key?

RTFM: https://www.alphavantage.co/documentation/

[Mikeeeeee]

@VRonin said in How to connect via API?:

OpenSSL

This link is nothing about OpenSSL.
OpenSSL need to connect to the project?

[VRonin]

Qt uses OpenSSL to implement TLS and SSL

[Mikeeeeee]

I installed everything in MaintenanceTool. Do I need to download additional OpenSSL?
If you need to install OpenSSL, then how to connect it to Qt?

[SGaist]

Hi,

@Mikeeeeee said in How to connect via API?:

I installed everything in MaintenanceTool. Do I need to download additional OpenSSL?
If you need to install OpenSSL, then how to connect it to Qt?

What OS are you on ? My guess would be Windows.

[Mikeeeeee]

My OS - Windows.

[sierdzio]

@Mikeeeeee said in How to connect via API?:

My OS - Windows.

https://stackoverflow.com/questions/20351155/how-can-i-enable-ssl-in-qt-windows-application

[Mikeeeeee]

downloaded openssl-1.1.1b and put it in the folder with the executable file. Did not help.
In openssl-1.1.1b there is no libeay32.dll.

[Mikeeeeee]

There is a file e_os.h in the main folder of the library .

[SGaist]

What version of Qt are you using ?

[VRonin]

@Mikeeeeee said in How to connect via API?:

I installed everything in MaintenanceTool

Terrible idea

[Mikeeeeee]

I use Qt 5.12.2

[SGaist]

Then try again with the latest version of the 1.0 series.

[Mikeeeeee]

I downloaded openssl-1.0.2r. There is no bin folder. No .exe files. No libeay32.dll. What to do with it?

[Mikeeeeee]

I downloaded libeay32.dll ssleay32.dll and put them to the executable file and the project, but it still does not work.

[SGaist]

Still the same error or another one ?

[Mikeeeeee]

Same error: TLS initialization failed

[SGaist]

Did you check whether you can connect to another https resource and if it triggers the same error ?

[Mikeeeeee]

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

[jsulm]

This post is deleted!

[Mikeeeeee]

How to fix this error?

[Pablo J. Rogina]

@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
}

[Mikeeeeee]

@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.

[Mikeeeeee]

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

[SGaist]

Just to be sure add this to your code:

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

[Mikeeeeee]

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

[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 ?