Wins: reduced GeoIP memory usage (moved off heap), CircuitClosed→NotConnected
error change (affects our handler error paths), DATA-cells-on-closed-streams
fix, and a flow-control sidechannel mitigation bug fix. Nothing here directly
addresses the stuck-Tor recovery work in the prior commits, but it's a clean
overdue bump while we're in this code.
Wrapper changes required by the bump:
- arti-client + tor-rtcompat: 0.41 → 0.42 to match the new crate versions
shipped with arti-v2.3.0.
- arti-v2.3.0's tor-rtcompat no longer installs a rustls CryptoProvider
implicitly (changelog: "if the application fails to install a rustls
CryptoProvider, tor-rtcompat no longer installs one itself"). Add a direct
`rustls = "0.23"` dep with the `ring` feature and `install_default()` it
inside INIT_ONCE before runtime creation — otherwise create_bootstrapped
panics on the first TLS handshake. Keeping `ring` (same as 2.2.0
effectively used) rather than 2.3.0's new default `aws-lc-rs`, which is
heavier on Android and has known build.rs pain on aarch64-linux-android.
Heads-up for the next bump: arti-v2.4.0 will explicitly wrap TorClient in
Arc rather than implicitly having Arc-like semantics. We already wrap
explicitly so the migration is a no-op aside from potential Arc<Arc<...>>
cleanup.
Rebuilds: libarti_android.so for arm64-v8a + x86_64.
All features and APIs verified present in 0.41:
- tokio, rustls, compression, onion-service-client, static-sqlite
- TorClient::create_bootstrapped, from_directories, connect()
https://claude.ai/code/session_01BApgDd5udqBzMqysSRMpZu
The Guardian Project's arti-mobile-ex AAR has three problems:
1. No 16KB page-aligned binaries (required for Google Play)
2. ArtiProxy's stop()+start() causes state file lock conflicts
(lock is tied to TorClient object lifetime, released only on GC)
3. ~140MB AAR size
Replace with a custom JNI bridge built from Arti source, following
BitChat's proven approach:
Build tooling (tools/arti-build/):
- build-arti.sh: Clones official Arti, compiles with cargo-ndk
for ARM64 + x86_64, NDK 25+ for 16KB page alignment
- Cargo.toml: Minimal deps with size-optimized release profile
- src/lib.rs: Custom SOCKS5 proxy with proper lifecycle:
- initialize() creates TorClient once (holds state lock forever)
- startSocksProxy() binds port and accepts connections
- stopSocksProxy() aborts listener only (TorClient stays alive)
This cleanly separates "stop routing traffic" from "destroy client"
Kotlin side:
- ArtiNative.kt: JNI declarations + ArtiLogCallback interface
- TorService.kt: Uses ArtiNative directly, start() initializes +
starts proxy, stop() only stops proxy (no lock issues)
- TorManager.kt: Restored stop() calls for OFF/EXTERNAL modes
since our native stop is now safe
Removed: arti-mobile-ex dependency from build.gradle and version catalog
Native libraries must be built separately:
cd tools/arti-build && ./build-arti.sh
https://claude.ai/code/session_01BApgDd5udqBzMqysSRMpZu
Claude