Caddy as HTTP proxy servicing some content from folders

Help
1

1. The problem I’m having:

I want to use Caddy as an HTTP proxy accepting CONNECT requests, but for a certain website (HTTP, so no HTTPS MITM attempts) I want Caddy to serve content by himself if it’s present in a corresponding file path, if this fails serving it by having caddy connect on the requested HTTP server while using a SOCKS5 proxy

3. Caddy version:

2.6.2-5

4. How I installed and ran Caddy:

apt install caddy

a. System environment:

Debian bookworm

2

That’s a very old version. Please use the latest, v2.8.4. You should use our official installation instructions Install — Caddy Documentation

Then you’re looking for a forward proxy. Caddy doesn’t have this built-in, but you can use GitHub - caddyserver/forwardproxy: Forward proxy plugin for the Caddy web server

1 Like
3

Hi, been a bit busy here, in the meantime I’ve took a look at the project you linked, it simply acts as a forward proxy, you can’t even set a local server to fetch resources from or even set per-domain rules, I’d like to use caddy for substituting privoxy on my setup if possible, and the central point of my question was using caddy as a connect server while servicing content from it’s own file set when possible

4

Right, that’s what CONNECT is. See CONNECT - HTTP | MDN

Yes, you can do that with Caddy built with the forwardproxy plugin. You can set up request matchers to split traffic however you need.

5

But I don’t see any instructions to set traffic splitters on request matches in the README

Also how would redirecting traffic help in servicing files through caddy?

6

It’s just another HTTP handler. You can use Caddy’s request matchers to make some requests use other handlers Request matchers (Caddyfile) — Caddy Documentation