Ability to filter (show/hide) individual response headers in the response preview

Given a response of

HTTP/1.1 200 OK
Server: nginx
Date: Mon, 07 Dec 2020 21:57:59 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: close
Vary: Accept-Encoding
Content-Length: 807

I would like to specify a document variable in the request to filter the headers that are displayed in the preview window.

# Only these headers are shown in the response preview
@response.show_headers = ["Content-Type", "Content-Length"]

###
GET {{scheme}}://{{host}}/ HTTP/1.1

Example output for above:

HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Content-Length: 807

Alternately, specify headers to be hidden:

@response.hide_headers = ["Server", "Date"]

###
GET {{scheme}}://{{host}}/ HTTP/1.1

And the intended output:

HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: close
Vary: Accept-Encoding
Content-Length: 807

Happy to do this myself and supply a PR, but I need some pointers about how to get at a document’s variables during formatHeaders

[ShonFrazier]

My use case is educational: I need to trim out the noise while demonstrating a new REST API. I feel like the show/hide lists have ultimate flexibility, but I could see the benefit of a flag/switch on displaying response headers whose name matches a request header whose value was set by variable.

I think I prefer the suffix syntax for the flag/switch simply for visibility (the header names would all still be aligned on the left) and editing (I feel it’s easier to add/remove from the end of the line.)

Colorization on flagged request headers would be a nice touch (those with the ‘sensitive’ indicator could change to, say, red to be more obvious), and maybe a button on the preview to reveal hidden headers, and when revealed, ‘hidden’ headers become red also.

[mbronk]

@ShonFrazier - For my own purpose (recording an API demo) I’ve added a very rudimentary “hide headers” functionality (PR above). Not the full implementation you were proposing, but perhaps you would find some use for it anyway.