| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/envoyproxy/go-control-plane/envoy/config/core/v3 | |
| github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3 | |
| github.com/golang/protobuf/proto | Package proto provides functionality for handling protocol buffer messages. |
| google.golang.org/grpc | Package grpc implements an RPC system called gRPC. |
| google.golang.org/grpc/internal/grpclog | Package grpclog provides logging functionality for internal gRPC packages, outside of the functionality provided by the external `grpclog` package. |
| google.golang.org/grpc/xds/internal/client | |
| google.golang.org/grpc/xds/internal/version | |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |