Setting gRPC status in http response

[wagenet]

Is this possible? It looks like the underlying interface may support it, but it doesn’t seem to be public.

[juanmolle]

Do we need to expose? maybe instead of return -1 https://github.com/proxy-wasm/proxy-wasm-rust-sdk/blob/master/src/hostcalls.rs#L721 we can map http code to the closest grpc code

[juanmolle]

@PiotrSikora let us know what you think about this please