Probing wrong protocol & port

[joke]

Hi,

I've got a working gateway with a listener on port 443 (https) and a matching knative configuration.
I did not specify the service on purpose so the gateway status address should be used.

  external-gateways: |
    - class: istio
      gateway: istio-ingress/public
      supported-features:
      - HTTPRouteRequestTimeout

apiVersion: gateway.networking.k8s.io/v1
kind: Gateway
metadata:
  name: public
  namespace: istio-ingress
spec:
  gatewayClassName: istio
  listeners:
  - name: https
    port: 443
    protocol: HTTPS
    allowedRoutes:
      namespaces:
        from: All
    tls:
      mode: Terminate
      certificateRefs:
      - name: nlb-ingress-cert
  addresses:
  - value: public.istio-ingress.svc.cluster.local
    type: Hostname
status:
  addresses:
    - type: Hostname
      value: k8s-istioing-public-47f7af8222-33cca740264846c1.elb.eu-central-1.amazonaws.com

If I create a knative service the controller tries to probe with the correct external url but as http with port 80.

severity: ERROR
timestamp: '2024-10-07T15:48:22.538456762Z'
logger: net-gateway-api-controller
caller: 'status/status.go:462'
message: >-
  Probing of http://echo-pub--joke.cps-cloud-dev.eventim.com/ failed, IP:
  k8s-istioing-public-47f7af8222-33cca740264846c1.elb.eu-central-1.amazonaws.com:80,
  ready: false, error: error roundtripping
  http://echo-pub--joke.cps-cloud-dev.eventim.com/: context deadline exceeded
  (depth: 0)
commit: b4f1050-dirty
knative.dev/controller: knative.dev.net-gateway-api.pkg.reconciler.ingress.Reconciler
knative.dev/kind: networking.internal.knative.dev.Ingress
knative.dev/traceid: 33da7790-3c6f-4598-9ba3-ccf0902b9428
knative.dev/key: joke/echo-pub
stacktrace: "knative.dev/net-gateway-api/pkg/status.(*Prober).processWorkItem\n\tknative.dev/net-gateway-api/pkg/status/status.go:462\nknative.dev/net-gateway-api/pkg/status.(*Prober).Start.func1\n\tknative.dev/net-gateway-api/pkg/status/status.go:341"

If I specify a service in the configuration

  external-gateways: |
    - class: istio
      gateway: istio-ingress/public
      service: istio-ingress/public
      supported-features:
      - HTTPRouteRequestTimeout

Then the controller tries to probe service pod and switches to port 443 but it still seems to use the http protocol

severity: INFO
timestamp: '2024-10-07T16:02:25.240270755Z'
logger: net-gateway-api-controller
caller: 'status/status.go:416'
message: >-
  Processing probe for http://echo-pub--joke.cps-cloud-dev.eventim.com/, IP:
  100.64.131.97:443 (depth: 0)
commit: b4f1050-dirty
knative.dev/controller: knative.dev.net-gateway-api.pkg.reconciler.ingress.Reconciler
knative.dev/kind: networking.internal.knative.dev.Ingress
knative.dev/traceid: a5d3e48b-6e82-45ab-a4b0-6c6fb0b45144
knative.dev/key: joke/echo-pub

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