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grpc-gateway

grpc-gateway is another technology for creating RESTful JSON APIs from gRPC services. It uses the same .proto annotations to map HTTP concepts to gRPC services.

It uses code generation to create a reverse-proxy server, and the reverse proxy translates RESTful calls into gRPC+Protobuf and sends the calls over HTTP/2 to the gRPC service. The benefit of this approach is the gRPC service doesn't know about the RESTful JSON APIs. Any gRPC server can use grpc-gateway.

https://github.com/grpc-ecosystem/grpc-gateway

https://grpc-ecosystem.github.io/grpc-gateway/ https://blog.logrocket.com/guide-to-grpc-gateway/