Ray client <> Server communication

I see Ray Client <> Server communication is via gRPC.

When Ray client is outside the Network location or Perimeter where Server resides a Proxy may be introduced. Envoy/HAProxy/ngnix.
Has the Ray team done any testing across these products? If so, is there any recommendation?

Relevant post: [Ray Client] Unable to connect to client when utilizing a proxy · Issue #23865 · ray-project/ray · GitHub