Google L7 load balancing issue reproduction attempt

This is a minimal gRPC streaming demo. The server is in src/dotnet/LbIssue.ApiHost, and listens on:

• 5001 - HTTP/1.1, used for the GET /send method for sending messages
• 5002 - HTTP/2, the gRPC endpoint that the client connects to

The src/dotnet/LbIssue.Client is a command-line app that we can dotnet run -- https://url.to.deployment to set up a stream listener.

Infrastructure Setup

The L4 load balancer was created by the istio-ingressgateway Service which is of type LoadBalancer. The L7 load balancer was created by a GKE Ingress. Both GCP load balancers point to the istio-ingressgateway Service that's deployed on the GKE cluster.

Istio has a Gateway configured to listen on port 443 for HTTPS traffic. The VirtualService is what routes traffic to the right port based on the hostname.

This architecture is the same as the one referenced here.