We concluded the last article by generating a gRPC Gateway service to act as a proxy in front of our gRPC chat service. This service would convert familiar REST/HTTP requests from clients to/from our gRPC services. We also briefly discussed how the protoc utility orchestrates various plugins to generate various artifacts: solely via stdin and stdout.
In the same vein, our REST/HTTP gateway was generated by using the grpc-gateway plugin and annotating our RPC methods by http method, bindings, and parameter details (for further customization). We also generated OpenAPI specs for our generated gateway service so it could be consumed via the SwaggerUI, too.