Mirroring/Shadowing - possibly a feature request

[ldarren (Darren Liew)]

1. Caddy version (caddy version):

2.3.0

2. How I run Caddy:

caddy reverse-proxy --from :8080 --to 127.0.0.1:1337

a. System environment:

Ubuntu 20.04 LTS
systemd: yes
docker: no

b. Command:

caddy reverse-proxy --from :8080 --to 127.0.0.1:1337

c. Service/unit/compose file:

NA

d. My complete Caddyfile or JSON config:

NA

3. The problem I’m having:

We are migrating our reverse proxy from nginx to caddyserver. we use nginx mirror module in several places to mirror requests from production to test server for troubleshooting. this feature seems like not supported in caddyserver yet

4. Error messages and/or full log output:

NA

5. What I already tried:

We have done google search, search in caddyserver github and caddyserver community forum

6. Links to relevant resources:

http://nginx.org/en/docs/http/ngx_http_mirror_module.html

Services - Traefik

Mirroring

[francislavoie]

You may open a feature request on GitHub for this. Seems simple enough to implement.

I figure this would be a list of upstreams to fire the request to, and the responses or failures are ignored.