Re:How to convert existing web extensions for Safari
by gorhill on Thursday January 07, 2021 @10:54AM
(#25672413)
You can observe `Cookie` header with a webRequest.onHeadersReceived listener.
Documentation about what can be observed or not is all available online, there is no need to make any assumption:
Firefox: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/Web...
Chromium: https://developer.chrome.com/docs/extensions/reference/webRe...
That should answer all questions regarding what can be observed.
I am unfamiliar, so please feel free to correct me. Thanks for uBO!