Add intercept req/res modifiers to proxy module, and build UI/UX to manage it.

[dstotijn]

• Allow changing request before it's sent.
• Allow changing response before it's written to client.

[adityathebe]

I think this is an absolute must required feature

[kenriortega]

I was reading this article golang-http-client-interceptors from dev.to. It`s very interesting apply this feature #23 (comment)

[dstotijn]

The proxy package already has a mechanism for a middleware chain for request and response modifiers (ref and ref), which will also be used for allowing users to modify requests via the UI. I’ll add this feature in the following weeks. Stay tuned!

[minanagehsalalma]

The proxy package already has a mechanism for a middleware chain for request and response modifiers (ref and ref), which will also be used for allowing users to modify requests via the UI. I’ll add this feature in the following weeks. Stay tuned!

@dstotijn Would that feature work for WebSockets? As most if not all proxies i tried wasn't able to auto modify websockets... Especially since the content lengh is needed and a bit random

A useful link

https://www.blackhillsinfosec.com/how-to-hack-websockets-and-socket-io/