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Author	SHA1	Message	Date
Razvan Dimescu	5d9a3a809b	feat: DoT client, recursive optimization, bench refactor - Add DoT forwarding client (tls://IP#hostname upstream config) - Recursive: cache NS delegations, serve-stale (RFC 8767), parallel NS queries on cold, no TCP fallback on individual UDP timeouts, 400ms NS/TCP timeout (down from 800/1500ms) - Reduce recursive p99 from 2367ms to 402ms (vs Unbound's 148ms) - Refactor benchmark suite: generic compare_two engine, delete one-off diagnostics (1969 → 750 lines) - Code cleanup: forward_query delegates to _raw, Option<String> for tls_name, saturating_sub for ns_idx	2026-04-12 18:40:46 +03:00
Razvan Dimescu	7efac85836	feat: wire-level forwarding, cache, request hedging, and DoH keepalive Wire-level forwarding path skips DnsPacket parse/serialize on the hot path. Cache stores raw wire bytes with pre-scanned TTL offsets — patches ID + TTLs in-place on lookup instead of cloning parsed packets. Request hedging (Dean & Barroso "Tail at Scale") fires a second parallel request after a configurable delay (default 10ms) when the primary upstream stalls. DoH keepalive loop prevents idle HTTP/2 + TLS connection teardown. Recursive resolver now hedges across multiple NS addresses and caches NS delegation records to skip TLD re-queries. Integration test harness polls /blocking/stats instead of fixed sleep, eliminating the blocklist-download race condition.	2026-04-12 18:39:48 +03:00

Author

SHA1

Message

Date

Razvan Dimescu

5d9a3a809b

feat: DoT client, recursive optimization, bench refactor

- Add DoT forwarding client (tls://IP#hostname upstream config)
- Recursive: cache NS delegations, serve-stale (RFC 8767), parallel
  NS queries on cold, no TCP fallback on individual UDP timeouts,
  400ms NS/TCP timeout (down from 800/1500ms)
- Reduce recursive p99 from 2367ms to 402ms (vs Unbound's 148ms)
- Refactor benchmark suite: generic compare_two engine, delete
  one-off diagnostics (1969 → 750 lines)
- Code cleanup: forward_query delegates to _raw, Option<String>
  for tls_name, saturating_sub for ns_idx

2026-04-12 18:40:46 +03:00

Razvan Dimescu

7efac85836

feat: wire-level forwarding, cache, request hedging, and DoH keepalive

Wire-level forwarding path skips DnsPacket parse/serialize on the hot
path. Cache stores raw wire bytes with pre-scanned TTL offsets — patches
ID + TTLs in-place on lookup instead of cloning parsed packets.

Request hedging (Dean & Barroso "Tail at Scale") fires a second
parallel request after a configurable delay (default 10ms) when
the primary upstream stalls. DoH keepalive loop prevents idle
HTTP/2 + TLS connection teardown.

Recursive resolver now hedges across multiple NS addresses and
caches NS delegation records to skip TLD re-queries.

Integration test harness polls /blocking/stats instead of fixed
sleep, eliminating the blocklist-download race condition.

2026-04-12 18:39:48 +03:00

2 Commits