Claude/vk proxy captcha fix 18dts3 - #181
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Optimized slider captcha solver to avoid CPU/RAM-heavy image rendering. Added legacy TCP accept support specifically for iSH on linux/386 arch. Fixed 'accept4: function not implemented' error in VLESS mode on iSH.
Fixed 'SIGSYS: bad system call (futex_time64)' by using blocking accept and avoiding Go's time.Sleep in spin-loops. Fixed 'TCP accept error: file file+net ish-conn: file exists' by implementing custom ishConn that bypasses Go's network poller. Fixed 'route ip+net: netlinkrib: invalid argument' by using directNet bypass in TURN client. Fixed 'TCP accept error: bad file descriptor' by retaining os.File reference to prevent GC from closing the FD.
Configure global DNS resolver to use Yandex DNS by default. Apply wrapISHListener to the manual captcha server to fix the missing syscall in iSH.
Implement navigator.sendBeacon for more reliable token delivery. Add server-side success_token extraction in generic_proxy. Make HTTP server shutdown non-fatal on iSH (ignores context deadline exceeded during cleanup) Increase manual captcha timeout to 3 minutes using an independent context Increase global DNS resolver timeout from 5s to 10s to improve stability
Added SavedProfile struct and persistence logic in vk_profile.json. Implemented automatic interception of real browser telemetry (browser_fp, device JSON, headers) during manual captcha solves. Integrated saved profile reuse in automated solve flows to bypass BOT status. Restored dynamic MD5-based fingerprint generation as a fallback mechanism.
Reduce update interval to 10ms for lower latency Increase window size to 4096 to improve bandwidth utilization Bump MTU to 1280
Cache all TURN addresses from VK and select them per stream. Improve iSH socket handling with TCP options and full writes.
Implement multi-lane transport (bonding) for VLESS to aggregate bandwidth from multiple KCP/DTLS sessions. Added environment-based KCP tuning and throughput statistics. - Support multi-lane bonding in client and server - Add KCP profiles (fast, balanced, slow) via VK_TURN_KCP_PROFILE - Auto-detect bonding streams via magic prefix - Add real-time throughput logging for active connections
Co-Authored-By: Nikita <72886646+WINGS-N@users.noreply.github.com>
Port the WRAP layer. Obfuscate DTLS packets before they enter TURN ChannelData with per-packet ChaCha20-XOR, and fail fast on invalid WRAP keys. Co-Authored-By: Anton Monakhov <a48@MacBook-Air-M4.local>
Avoid pinning streams to a TURN endpoint that times out during DTLS setup.
VK's error_code:14 ("Captcha need") response now omits captcha_sid and
captcha_img, providing only redirect_uri with an embedded session_token
for the Smart Captcha v2 flow. ParseVkCaptchaError returned nil on the
missing fields, so the auto-solver was never invoked and every stream
failed auth. Make captcha_sid and captcha_img optional; the v2 solver
only needs redirect_uri + session_token.
Also build Android for all ABIs (arm64 prioritized first, then arm, x86,
x86_64) in CI and release workflows, client and server cores alike.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HhExd8rxbEfhzJjBiawRQH
Under -debug, surface the captcha/auth diagnostics that were previously missing: a redacted breakdown of each error_code:14 challenge (parsed fields, redirect base, session_token preview/length), the chosen solve mode per attempt, the v2 page parse summary (show_type, pow difficulty, slider availability, script URL), and the raw error map whenever an error_code:14 is not recognized as a solvable captcha (so the next VK format change is diagnosable without a code edit). All new lines go through debugThrottledf, which emits at most once per 3s per key, so eight concurrent streams hitting the same challenge no longer flood the log. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01HhExd8rxbEfhzJjBiawRQH
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