Add support for gRPC

[rochdev]

Related: #312

[ebenoist]

I'd be happy to test this out!

[ebenoist]

I was able to create an interceptor for this!

https://gist.github.com/ebenoist/00c8695e8750138f76ef3f4b97b135a1

[rochdev]

Thanks for this @ebenoist! I'm not very familiar with gRPC, are interceptors documented somewhere? Also, are they available on the server as well?

[ebenoist]

It depends on the implementation. Client interceptors were added to grpc node core in version 1.11. Server interceptors in node are planned, but not currently implemented AFAIK. I've used the Proxy API in the past to fake this behavior, but it's than ideal.

I used these docs to write the implementation we are currently using.