regular gRPC and gRPC-Web over same port ?

[nikkolasg]

Hi all,

I was wondering if it is possible to use the same port to accept gRPC and gRPC-Web connections ? I have a use case where some servers talks to each other using already gRPC and I'd like to open a external API callable from browsers, so using gRPC-Web but using the same port if possible.
Is it possible already ? Is it possible at all ? and if yes, what would it take to do it ?

Thanks a lot !

PS: I've seen someone talking about it for a Rust impl. tower-rs/tower-grpc#35

[graup]

Definitely possible, but depends on your implementation. For Go, I've had success with this guide, specifically the cmux version.

[johanbrandhorst]

My GopherJS gRPC-Web example does this, the key is to split traffic in a handler: https://github.com/johanbrandhorst/grpcweb-example/blob/master/main.go#L123.

[johanbrandhorst]

This issue is unrelated to the gRPC-Web implementation.