Caddy: Can't get the desired effect when reverse proxy with a subdirectory

[syaoo]

Describe the bug/problem
I want to use "my.domain.com" to request the application at "127.0.0.1:8001", and use "my.domain.com/a" to request "127.0.0.1:8002". The first one works as I expected, but the second has a problem, Ideally, when visiting "my.domain.com/a" it will get "127.0.0.1:8002", In fact, it is "127.0.0.1:8002\a". Similar configurations are expected under nginx. here is my Caddyfile:

my.domain.com {
    reverse_proxy / 127.0.0.1:8001
    reverse_proxy /a 127.0.0.1:8083
}

and I also try this configuration:

my.domain.com {
    reverse_proxy / 127.0.0.1:8001
    handle /a/* {
        uri strip_prefix /a
        reverse_proxy  127.0.0.1:8083
   }
}

and this

my.domain.com {
    reverse_proxy / 127.0.0.1:8001
    rewrite /a /
    reverse_proxy /a 127.0.0.1:8083
}

my.domain.com {
    reverse_proxy / 127.0.0.1:8001
    route /a/* {
        uri strip_prefix /a
        reverse_proxy  127.0.0.1:8083
   }
}

None of this will solve the problem.

[mholt]

Thanks for your question, and we're glad that you're using Caddy! This looks more like a question about how to use Caddy rather than a bug report or feature request. Since this issue tracker is reserved for actionable development items, I'm going to close this, but we have a community forum where more people will be exposed to your question, including people who may be more expert or experienced with the specific question you're facing. I hope you'll ask your question there, and thanks for understanding!

[francislavoie]

I think this is what you're looking for:

my.domain.com {
    reverse_proxy 127.0.0.1:8001
    handle_path /a* {
        reverse_proxy 127.0.0.1:8083
    }
}

handle_path is the same as handle plus uri strip_prefix.

Note that I'm doing /a* and not /a/*, because /a/* will not match /a because it's looking for that extra /.

Also, / will only match / and not /foo, so I think this is closer to what you actually want, by omitting /, which is the same as *, i.e. match any request.

But as @mholt said, please ask your usage questions on the forums next time :slightly_smiling_face:

[syaoo]

thanks, it's worked. 😄