Node-based proxy

[paralin]

Some things I am interested in doing:

• Running the proxy in a Node.JS process
• Allowing arbitrary transport to the proxy (websocket, any other two-way link like WebRTC)

[paralin]

Done here: http://github.com/paralin/grpc-bus

Any comments?

[wenbozhu]

Cool. Any doc on the supported transport/protocols?

[paralin]

@wenbozhu supports literally anything. You give it a function for send(message) {} and it expects that message to end up at handleMessage(message) on the server. Also, the thing passed to send() is a ProtoBuf message so it supports binary serialization.

[wenbozhu]

Thanks for the update!

Are you interested in implementing the grpc-web spec in the Node proxy?

https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-WEB.md

There is already a Go proxy from Improbable. We are happy to review the Node proxy implementation and include the Node proxy in grpc-web interoperability test suite.

[lewish]

I've taken a stab at this, because we needed it ourselves for something: https://github.com/dataform-co/dataform/tree/master/tools/grpc-web-proxy

It seems to be working well for unary calls, I haven't had a chance to test it for streaming yet! Would be happy to discuss moving this somewhere official, but not sure I have the time to do that myself.

[stanley-cheung]

@lewish This looks promising! Let us check this out and we can discuss where it's more appropriate to host this later. Thanks!

[petermetz]

@lewish I'm late for the party, your link goes to 404. Did you ever end up finishing that implementation so that it supports streaming as well? :-)

[tiero]

@lewish I'm late for the party, your link goes to 404. Did you ever end up finishing that implementation so that it supports streaming as well? :-)

maybe this? https://github.com/dataform-co/dataform/tree/master/grpc-web-proxy

[petermetz]

@tiero Thank you! Unfortunately it says in the readme on that link that This has only been tested with unary gRPC calls. :-(

[tiero]

@petermetz I tested for my use case where I use grpc-web-text (ie. messages are encoded as base64) and is not supported either, guess is same reason only works for unary calls.