| 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 | Package grpc implements an RPC system called 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/tls/certprovider | Package certprovider defines APIs for Certificate Providers in gRPC. |
| google.golang.org/grpc/credentials/tls/certprovider/meshca | |
| google.golang.org/grpc/credentials/tls/certprovider/pemfile | Package pemfile provides a file watching certificate provider plugin implementation which works for files with PEM contents. |
| google.golang.org/grpc/grpclog | Package grpclog defines logging for grpc. |
| google.golang.org/grpc/internal | Package internal contains gRPC-internal code, to avoid polluting the godoc of the top-level grpc package. |
| google.golang.org/grpc/internal/credentials/xds | Package xds contains non-user facing functionality of the xds credentials. |
| 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/internal/grpcsync | Package grpcsync implements additional synchronization primitives built upon the sync package. |
| google.golang.org/grpc/xds/internal/balancer | Package balancer installs all the xds balancers. |
| google.golang.org/grpc/xds/internal/client | |
| google.golang.org/grpc/xds/internal/client/bootstrap | |
| google.golang.org/grpc/xds/internal/client/v2 | |
| google.golang.org/grpc/xds/internal/client/v3 | |
| google.golang.org/grpc/xds/internal/resolver | Package resolver implements the xds resolver, that does LDS and RDS to find the cluster to use. |
| net | Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |