$ grpcurl --plaintext --proto ./api/pb/api.proto localhost:9900 pb.Service.Put
ERROR:
Code: Unknown
Message: DUMMY ERROR
$ grpcurl --plaintext \
-d '{"key": "plop", "value": "plip", "force": true}' \
--proto ./api/pb/api.proto \
localhost:9900 pb.Service.Put
# with reflection, no need to pass proto file
$ grpcurl -d '{"key": "plop", "value": "plip", "force": true}' --plaintext localhost:9900 pb.Service.Put
{
"success": true
}