grpc-web VS protoc-gen-validate

A proxy is required to communicate from web clients to a server running gRPC, and there are only two choices for this proxy: a. The Improbable gRPC-Web client or b. The Google gRPC-Web client

I'll have to try the Improbable method (https://github.com/improbable-eng/grpc-web) - as it definitely includes a websocket transport, hopefully this multiplexes requests on that transport and would hence solve the problem. I'll post again once I know...

I think you should check out https://github.com/improbable-eng/grpc-web/tree/master/go/grpcwebproxy

What I like with gRPC is that it allows both client and server side streaming. Twirp seems to not have this feature at all. In contrast the https://github.com/improbable-eng/grpc-web even supports server and client streaming while wrapping gRPC in a HTTP1.1 Web connection.

I highly recommend also to look into https://github.com/improbable-eng/grpc-web in contrast to the 'official' gRPC-web from google the improbable-eng Implementation can do both server side and client side gRPC streaming (when used with their JavaScript client library) and all this on an http1.1/websocket basis...

We use https://github.com/improbable-eng/grpc-web for the server part with https://github.com/protobufjs/protobuf.js on the frontend.

I'm debating whether or not to rely on grpc for all client to API transport using improbable-eng's grpc-web project. The hesitation I'm running into is concern over unforeseen pitfalls. The fact that it isn't widely used is the main cause for my apprehension.

If you use https://github.com/improbable-eng/grpc-web you do not need envoy, you can wrap your golang grpc connection. I then mux the grpc and grpc-web so that I can use the same endpoint to serve http1 and http2 clients. This makes it easy to host on the cloud, eg. google cloud run.

I'm setting up a server portion of a website which uses (g)RPC. My dev setup is a docker-compose.yml that starts up my server on 50051 & another service that runs grpcwebproxy (exposes 8080 and proxies to my server @ 50051).

My understanding is that the powers that be within Google have decided that validating messages is outside the scope of schemas and serialization. protoc-gen-validate provides a portable way to perform validation: https://github.com/bufbuild/protoc-gen-validate

The problem with required fields is it kicks the can down the road when you want to deprecate a field. Keeping everything optional is much, much better for everyone in the long run.

I built a (go) very rough draft to support 3.1 + a json pointer pkg to support a refactor that was in progress before I bailed on the idea. The amount of effort to get a conventional API was dwarfing that of grpc, especially with protoc-gen-validate.

Yes, I am currently using this. I prefer something like this https://github.com/envoyproxy/protoc-gen-validate

We've been using Rust with protobuf, but had to write lots of conversions from protobuf struct to actual DTO, since prost generates Options for nested types, and does not really support custom types. So I extended prost with the options that we needed. I might aim to also support protoc-gen-validate.