traefik custom rule PathStrip does not match - traefik

Question

TRying out custome rule in traefik ..
it should
Remove /code from the url and send remaining to backend based on the other matcher
Example url : /code/rr ;
only /rr should be sent to backend .. Looks like only /code is sent to backend.
Below is my rule , but not working ..
[frontends.f_rr]
entrypoints = ["http","https"]
priority = 10
passHostHeader = true
backend = "b_co"
[frontends.f_co.routes.test_1]
rule = "PathStrip: /code/; Path:/rr"

Answer 1

You should use the PathPrefixStrip: /code rule (and only this rule). It catches all requests for the /code path prefix but strips it prior to forwarding to the backend.
See also the documentation at https://docs.traefik.io/basics/#frontends, in particular the subsection titled Path Matcher Usage Guidelines.

Answer 2

Faced same issue with stripprefix middleware. The way to go about it, is after you define the router and the middleware, you actually need to assign the middleware to the router for it to be usable. Otherwise it will be defined and created but not used (You can use traefik dashboard to see if the middleware is being used by any router)
Using docker provider:
traefik.enable: true
traefik.port: 9101
# define router
traefik.http.routers.my-router.rule: PathPrefix(`/my-router`)
# only if accepts htpps
traefik.http.routers.my-router.tls: true
# strippath middleware
traefik.http.middlewares.my-router-strip.stripprefix.prefixes: '/my-router'
# assign to router, do n ot forget this bit
traefik.http.routers.my-router.middlewares: my-router-strip#docker
traefik.http.middlewares.my-router.stripprefix.forceslash: false
traefik.http.routers.my-router.entrypoints: https, http