I just find out the application is only open for 4317 port (grpc). How can I open other port?

I think this is what I came to ask about as well. I'm trying to cludge together a basic trace exporter in a Google App Script, and I see /traces listens for gRPC. Can we use REST with it at all?

There are both gRPC and HTTP endpoints. The

/v1/traces

is HTTP endpoint.

Ohhh thank you!!