How to connect via API?

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

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

Mikeeeeee

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

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

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]