| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| google.golang.org/grpc/codes | Package codes defines the canonical error codes used by gRPC. |
| google.golang.org/grpc/credentials | Package credentials implements various credentials supported by gRPC library, which encapsulate all the state needed by a client to authenticate with a server and make various assertions, e.g., about the client's identity, role, or whether it is authorized to make a particular call. |
| google.golang.org/grpc/credentials/alts/internal | Package internal contains common core functionality for ALTS. |
| google.golang.org/grpc/credentials/alts/internal/handshaker | Package handshaker provides ALTS handshaking functionality for GCP. |
| google.golang.org/grpc/credentials/alts/internal/handshaker/service | Package service manages connections between the VM application and the ALTS handshaker service. |
| google.golang.org/grpc/credentials/alts/internal/proto/grpc_gcp | |
| google.golang.org/grpc/grpclog | Package grpclog defines logging for grpc. |
| google.golang.org/grpc/internal/googlecloud | Package googlecloud contains internal helpful functions for google cloud. |
| 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. |
| net | Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |