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google-cloud-platformgrpchttp2google-cloud-rungoogle-anthos

Configure Cloud Run on Anthos to forward HTTP2

How do you make Cloud Run for Anthos forward incoming HTTP2 requests to a Cloud Run service as HTTP2 instead of HTTP/1.1?

I'm using GCP with Cloud Run for Anthos to deploy a Java application that runs a GRPC server. The Cloud Run app is exposed publicly. I have also configured Cloud Run for Anthos with an SSL cert. When I try to use a GRPC client to call my service, client sends request over HTTP2 which the load balancer accepts but then when the request is forwarded to my Cloud Run service (a Java application running GRPC server), it comes in as HTTP/1.1 and gets rejected by the GRPC server. I assume somewhere between the k8 load balancer and my k8 pod, the request is being forwarded as HTTP/1.1 but I don't see how to fix this.

Solution

  • https://github.com/knative/docs/blob/master/docs/serving/samples/grpc-ping-go/README.md

    Describes how to configure named port to make HTTP/2 work