Is RequestPort always supposed to be a dash?

Traefik Traefik v2 (latest)
1

This is what my static config looks like.

log:
  level: INFO
  format: json
accessLog:
  format: json
  fields:
    defaultMode: drop
    names:
      RequestPort: keep

But when I check the logs, I see this.

"RequestPort":"-"

I would except this to be something like "RequestPort":"443". But, maybe I'm misunderstanding the feature.

I tried with curl like this, just in case it made a difference, but it didn't. RequestPort is still -.

curl https://example.com:443
2

Try this:

curl https://example.com:443 -H "Host: example.com:443"

3

Oh, I see. RequestPort will always be a dash, unless a port is used in the Host header. Okay. Cool. Thanks!