| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| github.com/golang/protobuf/proto | Package proto provides functionality for handling protocol buffer messages. |
| go.opentelemetry.io/otel/api/correlation | |
| go.opentelemetry.io/otel/api/global | |
| go.opentelemetry.io/otel/api/kv | |
| go.opentelemetry.io/otel/api/propagation | |
| go.opentelemetry.io/otel/api/trace | |
| google.golang.org/grpc | Package grpc implements an RPC system called gRPC. |
| google.golang.org/grpc/metadata | Package metadata define the structure of the metadata supported by gRPC library. |
| google.golang.org/grpc/peer | Package peer defines various peer information associated with RPCs and corresponding utils. |
| google.golang.org/grpc/status | Package status implements errors returned by gRPC. |
| io | Package io provides basic interfaces to I/O primitives. |
| net | Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
| regexp | Package regexp implements regular expression search. |