X-Accel-redirect example using Caddy2 server

README.md

Start services:

docker-compose up

Test x-accel-redirect for POST requests:

curl -v -d '{"foo": 2}' http://localhost:8000/test

acl

:8001

log
header X-Accel-Redirect "/back"
respond "Proceed!"

back

:8002

log
respond "I'm back!"

docker-compose.yml

version: "3.5"

services:

  front:
    image: caddy:2.4.6
    restart: unless-stopped
    ports:
      - "8000:8000"
    volumes:
      - ./front:/etc/caddy/Caddyfile
    depends_on:
      - acl
      - back

  acl:
    image: caddy:2.4.6
    restart: unless-stopped
    ports:
      - "8001:8001"
    volumes:
      - ./acl:/etc/caddy/Caddyfile

  back:
    image: caddy:2.4.6
    restart: unless-stopped
    ports:
      - "8002:8002"
    volumes:
      - ./back:/etc/caddy/Caddyfile

front

:8000

log
reverse_proxy * acl:8001 {
        @accel header X-Accel-Redirect *
        handle_response @accel {
                rewrite {http.reverse_proxy.header.X-Accel-Redirect}
                reverse_proxy back:8002
        }
}