rpc_dart_grpc_reflection

gRPC Server Reflection (v1 and v1alpha) for rpc_dart, so grpcurl, Postman and other gRPC tooling can discover the services registered on an endpoint.

• ServerReflectionContract — the responder contract to register on an endpoint.
• RpcReflectionRegistry — holds the FileDescriptorProto bytes to serve.
• Descriptor builders (RpcMessageDescriptor, RpcMethodDescriptor, ...) for hand-written schemas; rpc_dart_generator can emit the same bytes from an annotated contract.

Usage

import 'package:rpc_dart_grpc_reflection/rpc_dart_grpc_reflection.dart';

final registry = RpcReflectionRegistry()..addFileDescriptor(descriptorBytes);
responderEndpoint.registerServiceContract(ServerReflectionContract(registry));

Caveat

Reflection describes a protobuf schema. It is only truthful when the payloads on the wire really are protobuf — i.e. when the contract uses RpcBinaryCodec with protoc-generated messages. With the default CBOR codec the descriptors are advisory: tools will list and describe the service, but cannot decode the payloads.