Runtime-verified whether Apple's URLSession honors connectionProxyDictionary
SOCKS settings for Nostr relay traffic (plain HTTPS + URLSessionWebSocketTask),
since the app routes all Nostr traffic through Arti's local SOCKS5 proxy solely
via those keys and Apple does not officially support SOCKS for URLSession on iOS.
Verification harness (scripts/tor-egress-verification/): a minimal SOCKS5 CONNECT
proxy that logs arriving connections, plus a Swift probe that runs an HTTPS GET
and a WebSocket ping through a URLSession configured with the proxy dict. Result:
on macOS (kCFNetworkProxiesSOCKS* constants) and the iOS simulator (raw
"SOCKSProxy"/"SOCKSPort" string keys, the exact app path) BOTH HTTP and WebSocket
are proxied, do remote DNS through the proxy, and the proxied session is
fail-closed (every request errors when the SOCKS proxy is down). The feared
direct-egress leak did not reproduce on the tested platforms.
Defense-in-depth for the platform Apple does not guarantee (physical iOS):
add TorEgressVerifier, which performs a canary request through the proxied
session and asserts the exit is a Tor node (check.torproject.org IsTor==true),
positively detecting a direct egress even if the OS silently ignored the proxy.
Policy: verifiedTor allows (cached for a TTL); notTor refuses (leak detected,
never open relays); unreachable allows-with-warning (session stays fail-closed
by construction). Wired into TorManager.awaitEgressReady() and required by both
NostrRelayManager and GeoRelayDirectory before opening connections. Cache is
invalidated on Tor restart/dormant/shutdown. Never falls back to a direct
connection.
Probe is injected so the policy/caching is unit-tested offline; the live-network
harness lives under scripts/ and is not run by CI.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Package.swift's .process("Noise") resource claim silently excluded all
of bitchatTests/Noise/ from compilation since Oct 2025 - including a
complete official-vector runner (cacophony + snow XX transcripts,
transport messages, handshake hash, byte-identical to upstream).
Narrowing the resource to the JSON file and loading via Bundle.module
brings 51 Noise tests back to life, with a guard asserting each
vector's protocol name matches the app's.
CI gains a performance floor gate: perf-floors.json carries deliberately
generous floors (~25% of measured throughput) that catch algorithmic
regressions without flaking on runner variance; PERF lines reach the
gate via an O_APPEND side-channel file since swift test --parallel
swallows passing tests' stdout.
Tests are now hermetic: FavoritesPersistenceService uses an in-memory
keychain under test (fixes the securityd hang that blocked pipeline
benchmarks locally) and read-receipt persistence uses a wiped scratch
UserDefaults suite instead of .standard.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
