Flow of payment gateway

If it installs fine you can upload it and share the link or try attaching to a forum reply. Anyone using it however would be doing so at ones own risk. Alternatively you can directly email it to us (send to beat and krileon at joomlapolis dot com). I don't know when we'd get around to reviewing it though as our schedule is full working in relaunching our quickstart package.

I have now e-mailed the new plugin.

Yup, received it fine; thank you. I don't know when we'll have time to review it though unfortunately.

How is it possible to use your HTTP API provided for gateways (httpsRequestGuzzle) when the PSP requires a custom 'Accept-Version:v10' in the header ??

If I, as a test hardcode this: directly in the public static function httpsRequestGuzzle, then I can get it to work. Could this custom header option in some way become added to the function, so that it becomes an argument of the function ? or how do I move on from here ?

Any short suggesttion? or is it just not possible to use your API then ?

It's not possible to send custom headers through httpsRequestGuzzle at this time. You do not have to use httpsRequestGuzzle, but you do need to be using Guzzle that is included with CB. CB Quickpay is already calling Guzzle directly in _returnParamsHandler for example where 'Accept-Version' is being passed.