View Source GRPC.Client.Resolver.DNS (grpc v0.11.3)

DNS Resolver for gRPC targets, supporting dynamic updates via a GenServer.

Resolves dns://host[:port] targets. Fetches A/AAAA records and optional _grpc_config.<host> TXT records for ServiceConfig.

This implementation maintains an internal cache of addresses and service config, and refreshes them periodically.