Can custom forward_proxy for caddy2 support multi basic-auth config

[bash99]

which is fine in caddy1.

But I got error message like this:
run: adapting config using caddyfile: parsing caddyfile tokens for 'route': Caddyfile_vx:13 - Error during parsing: parsing caddyfile tokens for 'forward_proxy': Caddyfile_vx:7 - Error during parsing: Multi-user
basicauth is not supported

which with

    basicauth user1 pass1
    basicauth user2 pass2

Configs

[mattieross]

try

    basic_auth user1 pass1
    basic_auth user2 pass2

[bash99]

try

    basic_auth user1 pass1
    basic_auth user2 pass2

I use @mixcool's binary before build one for myself, his binary is basicauth. but this is not the problem.

I've found upstream forward_proxy don't support multi-user
https://github.com/caddyserver/forwardproxy/blob/caddy2/forwardproxy.go:731

			// TODO: Support multiple basicauths.
			if h.BasicauthUser != "" || h.BasicauthPass != "" {
				return d.Err("Multi-user basicauth is not supported")
			}

[beeperman]

Maybe not a good fix but I think you can just use multiple forward_proxy calls to achieve it. Something like

forward_proxy {
basic_auth user1 pass1
hide_ip
hide_via
probe_resistance
}
forward_proxy {
basic_auth user2 pass2
hide_ip
hide_via
probe_resistance
}

[klzgrad]

This issue should be redirected to upstream caddyserver/forwardproxy#81.

[klzgrad]

Multiple auth is fixed here https://github.com/klzgrad/forwardproxy/releases/tag/v2.7.6-naive