Couldn't you just pipe a response file to netcat running on 80?

cat response.html | nc -lp 80

That's what I used to do :P, one of the features that httplab offer, is that you can inspect the request

Or redirect the standard input of netcat to the response file.

    nc -lp 80 < response.html

Today I learned something fantastic, thank you! :o)

What's the correct command for BSD nc (on macOS)? For the `-l` option, the manual says "It is an error to use this option in conjunction with the -p, -s, or -z options".

I think nc -l 80 should do it

Not if you want a UI.

Another related tool is mitmproxy https://mitmproxy.org/

If your use cases allow for graphical apps, there's a couple that are heavily used by the web app. security testing community and have quite a bit of useful functionality for inspecting/modifying HTTP(s) requests.

OWASP ZAP Proxy - https://www.owasp.org/index.php/OWASP_Zed_Attack_Proxy_Proje...

Burp Suite - https://portswigger.net/

Looks like a great tool for ad hoc testing of HTTP clients. Exactly what I often need during development of the client you use in the demo :)

:P

This is really cool. Any plans for HTTPS support? This could be a really powerful tool for network based reverse engineering (even more so if there was support for predefined request-response pairs so more elaborate cases could be done)

definitively: https://github.com/gchaincl/httplab/issues/4 can u elaborate on the predefined request-response case?

For those who'd like a GUI instead of tabbing fields, I'm a big fan of Insomnia. [1]

https://insomnia.rest

But insomnia is a http client. This is a server. Also insomnia is more expensive than Paw and is also subscription based. There is also Postman - https://chrome.google.com/webstore/detail/postman/fhbjgbifli... which is also a great tool and free too.

good job. a similar tool called wuzz [0] was released like a month ago.

[0] https://github.com/asciimoo/wuzz/

The README for HTTPLab says it is heavily inspired by wuzz.

I think I've heard of something like this as an Emacs mode. Does that exist?

it does! love it too.

https://github.com/pashky/restclient.el

I was looking for something like this a couple of days back. Looks cool.

Heh This is pretty cool.

this is pretty impressive. can you add HTTPS support please.

I'll work on it here: https://github.com/gchaincl/httplab/issues/4