forwarder

func New ¶

func New(cfg *config.Config) *Forwarder

New return forwarder.

Accepted forwarder_servers formats:

• "1.1.1.1:53" — plain UDP (TCP fallback on TC)
• "tls://1.1.1.1:853" — DoT (RFC 7858) over TCP-TLS
• "https://1.1.1.1/dns-query" — DoH (RFC 8484) with IP literal
• "https://dns.example.com/dns-query" — DoH with hostname (bootstrapped via the system resolver once at startup; resolved IPs are pinned for the process lifetime, no per-query DNS dependency)

DoH servers honour cfg.Timeout (per-IP dial budget) and cfg.QueryTimeout (full request budget) — operators tune both via the existing top-level config keys, no DoH-specific knob.

Each entry is parsed independently; a malformed or unreachable entry is logged and skipped so one bad upstream does not abort startup if others are usable.