Imports github.com/golang/protobuf/jsonpb github.com/golang/protobuf/proto github.com/golang/protobuf/protoc-gen-go/descriptor github.com/golang/protobuf/ptypes/duration github.com/golang/protobuf/ptypes/timestamp github.com/julienschmidt/httprouter Standard library imports bytes encoding/base64 encoding/json fmt io io/ioutil log math net/http net/url reflect regexp strconv strings time