Trailing slash is not being removed before request is forwarded to backend

[martinklepsch]

Do you want to request a feature or report a bug?

Bug

What did you do?

• I used this traefik.toml and started Traefik using traefik --configFile=traefik.toml.

  curl https://git.io/fp2aJ -o traefik.toml; traefik --configFile=traefik.toml
  

• I started the referenced backend using:

  cd $(mktemp -d); echo "ping http1" > ping; python3 -m http.server 8003
  

• I used curl to retrieve the ping file via Traefik, intentionally adding a trailing slash:

  curl http://localhost:80/ping/
  

What did you expect to see?

As I understand keepTrailingSlash with it's default value of false requests with a trailing slash should be stripped of trailing slashes before being forward to the backend.

If this is working as intended then the bug might be in the documentation :)

What did you see instead?

The request arrived at the backend containing the trailing slash. Causing a 404 response.

~ curl -si http://localhost:80/ping/ | head -n1
HTTP/1.1 404 Not Found
~ curl -si http://localhost:80/ping | head -n1
HTTP/1.1 200 OK

Traefik Version

Version:      dev
Codename:     cheddar
Go version:   go1.11.2
Built:        I don't remember exactly
OS/Arch:      darwin/amd64

Reported as 1.7.4 in /dashboard. Installed via brew install traefik. Wanted to use a Docker image but couldn't get host networking set up.

Environment

see above

Debug Logs

http://sprunge.us/qPdLm4

[martinklepsch]

Started looking into this, complete beginner with regards to Go but will try to at least create a failing test case here: https://github.com/martinklepsch/traefik/tree/fix-4247.

If you want to help me contribute/get this done, I'm also @martinklepsch in the Traefik Slack.

[pascalandy]

I understand that "keepTrailingSlash"" is not relevant anymore in Traefik V2 right?

[rtribotte]

Hello,

This issue was for the v1, but as described in our deprecation notices the v1 is not supported anymore.
Accordingly, we are closing this issue.