microsoft
[How-to guide]: Attach proxy to a browser instance
Currently we ask users to setup a global proxy, however this might not be the best approach for developers.
It is possible to launch Chromium-based browsers (demonstrated by @waldekmastykarz on Graph Field call) and attach the proxy directly to a browser instance.
The approach I've been using seems like to be working only in Chrome specifically. It seems like Edge is not exposing the necessary options and the only way to use a proxy with it is through system settings. At least that's what I've been able to find out. If there's a way to specify a proxy just for Edge, it would be very helpful.
That is consistent with my experiments too. Still, it would be good to have that documented so that folks have the option.
The approach I've been using seems like to be working only in Chrome specifically.
Interesting, I had assumed that as they are both Chromium based that it would also apply to Edge, thanks for letting me know.
Theoretically, the engine would support it, but the Edge executable is not exposing the proxy configuration option on the command line, which is why you can't set it up the same way as you can with Chrome.