Subdomain Gateway not redirecting with companion

Help
1

Hello,

I’m trying to configure the subdomain gateway.
I have changed the following in my config file:

    "PublicGateways": {
        "domain.tld": {
          "UseSubdomains": true,
          "Paths": ["/ipfs", "/ipns"]
        }
    },

My public gateway is ipfs.domain.tld

When I open https://docs.ipfs.tech/ in Firefox which has the IPFS companion extension, I get directed to: https://ipfs.domain.tld/ipns/docs.ipfs.tech/
instead of: https://bafybeib4hi7eombqq2ej675e5z2rhzskhgaxl5beq2tgourztauszqfule.ipfs.domain.tld/ (Which works when opened directly)

Does anyone know if this is something I would need to configure in the companion extension, or the cubo config, in order to make the subdomain gateway work by default?

Relevant reverse proxy config:

    ipfs-gateway-router:
      rule: HostRegexp(`ipfs.domain.tld`, `{subdomain:[a-z0-9]+}.ipfs.domain.tld`)
      entryPoints:
        - web-secure
      middlewares:
      #- local-whitelist
        - security-headers
      service: ipfs-gateway
      tls:
        certResolver: le
        domains:
          - main: "ipfs.domain.tld"
          - sans: "*.ipfs.domain.tld"
2

I have also added a *.ipns.domain.tld wildcard record in my DNS, and appended the following to the Reverse Proxy configuration:

    ipns-gateway-router:
      rule: HostRegexp(`ipns.domain.tld`, `{subdomain:[a-z0-9]+}.ipns.domain.tld`)
      entryPoints:
        - web-secure
      middlewares:
      #- local-whitelist
        - security-headers
      service: ipfs-gateway
      tls:
        certResolver: le
        domains:
          - main: "ipns.domain.tld"
          - sans: "*.ipns.domain.tld"

Still no joy.

3

What did provide joy though, was changing the hostnames to not include ipfs as the “main” subdomain, and including dashes in the HostRegex.

Final traefik configuration:

    ipfs-gateway-router:
      rule: Host(`domain.tld`) && PathPrefix(`/ipfs/`, `/ipns/`) || HostRegexp(`{subdomain:[a-z0-9\-]+}.ipfs.domain.tld`)
      entryPoints:
        - web-secure
      middlewares:
      #- local-whitelist
        - security-headers
      service: ipfs-gateway
      tls:
        certResolver: le
        domains:
          - main: "ipfs.domain.tld"
          - sans: "*.ipfs.domain.tld"

    ipns-gateway-router:
      rule: Host(`domain.tld`) && PathPrefix(`/ipfs/`, `/ipns/`) || HostRegexp(`{subdomain:[a-z0-9\-]+}.ipns.domain.tld`)
      entryPoints:
        - web-secure
      middlewares:
      #- local-whitelist
        - security-headers
      service: ipfs-gateway
      tls:
        certResolver: le
        domains:
          - main: "ipns.domain.tld"
          - sans: "*.ipns.domain.tld"

Everything should be working as intended now:

https://domain.tld/ipns/docs.ipfs.tech → https://docs-ipfs-tech.ipns.domain.tld
also:
https://domain.tld/ipfs/cid → https://cid.domain.tld/