Bug reports:

when using RegisterXXXHandlerServer rather than RegisterXXXHandlerFromEndpoint

calling grpc.SendHeader returns following error

rpc error: code = Internal desc = grpc: failed to fetch the stream from the context context.Background.WithValue(type *http.contextKey, val <not Stringer>).WithValue(type *http.contextKey, val 127.0.0.1:8081).WithCancel.WithCancel.WithCancel.WithValue(type metadata.mdIncomingKey, val <not Stringer>)

Steps you follow to reproduce the error:

register any gateway with RegisterXXXHandlerServer and try send header grpc.SendHeader in service.

What did you expect to happen instead:

causes no error

What's your theory on why it isn't working:

grpc.ServerTransportStream was not attached to context when calling service methods directly within memory