# Constants
FreePortAddress marks the server listens using random free port.
# Variables
Balancer is instance of module Balancer, which manages the load balancer features.
Client is instance of module Client, which manages the client features.
Ctx is instance of module Context, which manages the context feature.
Resolver is instance of module Resolver, which manages the DNS resolving for client.
Server is instance of module Server, which manages the server feature.
# Structs
GrpcServer is the server for GRPC protocol.
GrpcServerConfig is the configuration for server.
Service implements gsvc.Service interface.