node,ingress_limit: operational hardening — rate limits and opening TTL (closes #22)#33
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…ue 22) - New ingress_limit: sliding-window global and per-peer caps, LRU-capped peer table. - Node.handleReceive rate limit before alloc/copy/decode; ingressRateKey for UDP endpoints. - Config.ingress and outbound_opening_ttl_ms; prune stale opening handshakes on receive. - allocOpeningPingHandshake takes now_ms for created_ms (API change). - Tests for limiter, per-peer cap, and outbound expiry. Closes #22.
- PumpOpts.egress_limiter and pumpOnceEx; pumpOnce delegates with empty opts. - PumpResult enum for stable return type across pumpOnce/pumpOnceEx. - ingress_limit module doc: same limiter for outbound counting. - Node module doc: cross-reference pumpOnceEx egress. - Test: per-peer egress cap blocks second reply to same UDP source.
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Implements #22 (timeouts / rate limits / basic abuse controls).
Inbound (ingress_limit.zig)
Node
Tests
Not covered (follow-ups)