I turned a code, which i found at a A6-intro video by Andreas Speiss, into a library. I am actually using the code for an A6-GSM module by Ai-Thinkers and found it easyer to implement it that way.
With this library you can easily post data to any website using Http-Post-request.
Here are the files: https://gitlab.me-soldesign.com/Tobias/A6HTTPLibrary
Unfortunately i did not manage to use HTTPS because the A6 only supports clean TCP. One would have to build a SSL-Layer on top of that before being able to use HTTPS. Im looking forward for anyone who sees this and takes the challenge to do just that.
Greetings Tobias from MicroenergyInternational