Razvan Dimescu 05baad0cc0 feat: DoT (DNS over TLS) client upstream ...

Adds tls:// upstream support for forwarding queries over DNS-over-TLS
(RFC 7858). Parses tls://IP:PORT#hostname format, with default port 853.

- New Upstream::Dot variant with TLS connector
- forward_dot: length-prefixed DNS over TLS stream
- build_dot_connector: system root CAs via webpki-roots
- parse_upstream handles tls:// prefix

Example config:
  address = ["tls://9.9.9.9#dns.quad9.net"]

2026-04-12 18:35:06 +03:00

62 KiB

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