Using as a GRPC server

[slashmili]

Hey 👋🏼

I've been looking for a HTTP 2.0 server that I can use to build a GRPC server. I'm wondering if it's something that you have looked into?

For unary calls the way that Plug works is good enough. request comes and the server serves it.

However for server-streaming something like a genserver is optimal. What I mean is somehow making a request on a route, spawn a genserver and until the process decides that there is no more data need to be transferred.

Any suggestions or thoughts?

[mtrudel]

Hi!

This has been discussed previously at #17; the tl;dr is that Bandit's mandate is to be a Plug (and shortly Sock!) server first and foremost. To the extent that it would be able to serve streaming gRPC clients, I would suggest that those changes be proposed & adopted via the Plug API / project. If the community were able to agree on a standard for this there (which I think is needed, btw), I'd happily implement support for it within Bandit.

I'll also note that this is a thing which would be generally useful beyond gRPC; indeed the project that originally spurred Bandit's development does its own cheap hack to do something similar. It's a generally useful improvement, to be sure, just one that needs to be agreed on elsewhere.

[mtrudel]

I'll also note that the Bandit process which calls Plugs (at least in the HTTP/1 case) is a GenServer, and if you were so inclined you could hack support for server-initiated messages in mostly cleanly (albeit in a manner totally separate from the Plug API). See the link in my previous comment for prior art.

[slashmili]

Thanks for the quick reply! I'm sorry for not searching before creating the issue. I have kept my eyes on this project for over 1 year. Somehow I missed #17 conversation!