Retry failed proxy connections with a fresh random proxy on each
attempt (configurable via retries setting, proxy_source only).
Track connection metrics and log summary every 60s and on shutdown.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Asyncio-based SOCKS5 server that tunnels connections through
configurable chains of SOCKS5, SOCKS4/4a, and HTTP CONNECT proxies.
Tor integration via standard SOCKS5 hop.
