gRPC web support

[kahirokunn]

I want to use gRPC web with Knative serving + Kourier, how do I set it up to work?
Envoy has gRPC web support.

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[kahirokunn]

keep

[ReToCode]

Are you trying anything specific? This should work with setting the container port like this:

        ports:
          - name: h2c

See https://github.com/knative/docs/tree/main/code-samples/serving/grpc-ping-go for a full example.

[kahirokunn]

gRPC Web needs to add a dedicated envoy filter
It doesn't work by itself!

[ReToCode]

Ah I see. We do not currently support custom envoy configuration for Kourier. I'll add this as an RFE.
For now you could try to use https://github.com/knative-sandbox/net-istio as an ingress-controller for Knative. Istio allows to add custom envoy filters as a CR.

[kahirokunn]

Okay. Thx 🙏