feat: add Tor SOCKS5 proxy support for outbound .onion connections #89
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Implement SOCKS5 protocol in connection.rs to route outbound peer connections through a Tor proxy. This enables LDK nodes to connect to peers at .onion addresses. Changes: - Add tor_socks5_connect() with full SOCKS5 handshake (RFC 1928/1929) - Support Tor stream isolation via random password auth per connection - Add set_tor_proxy_address() on NodeBuilder (FFI-compatible via UDL) - Route OnionV3 addresses through SOCKS5, clearnet through direct TCP - Include base32 encoder for OnionV3 address derivation Based on the approach in upstream ldk-node PR lightningdevkit#778, but with a self-contained SOCKS5 implementation that doesn't depend on unreleased lightning_net_tokio::tor_connect_outbound(). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
connection.rsto route outbound peer connections through a Tor proxy, enabling LDK nodes to connect to peers at.onionaddressesset_tor_proxy_address()onNodeBuilderwith FFI-compatible UDL bindingsOnionV3addresses through SOCKS5 proxy while keeping clearnet addresses on direct TCPDetails
This is a self-contained SOCKS5 implementation (~100 lines) that doesn't depend on unreleased upstream code. It follows the approach of ldk-node #778 but avoids the dependency on
lightning_net_tokio::tor_connect_outbound()which isn't in any released crate version yet.SOCKS5 features:
EntropySource::get_secure_random_bytes())Architecture:
tor_proxy_addresslives onNodeBuilder(notConfig) for UniFFI compatibilityConnectionManagerdetects.onionaddresses and routes them through the proxyTest plan
cargo checkpasses with zero warnings.onionsucceeded🤖 Generated with Claude Code