feat(telnet): implement telnet protocol support#138
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jonwiggins merged 1 commit intomainfrom Mar 28, 2026
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…52, 1548) Add telnet:// protocol handler implementing RFC 854 with: - Raw bidirectional TCP pipe for batch-oriented transfers - IAC escaping on send (0xFF → 0xFF 0xFF) - IAC stripping on receive (command sequences removed from data) - Telnet negotiation responses (refuse all options: DO→WONT, WILL→DONT) - Subnegotiation handling (IAC SB ... IAC SE stripped) - Upload support via --upload-file / -T - Timeout support via --max-time / -m (exit code 28) - -t / --telnet-option CLI flag accepted (parsed but not yet negotiated) Wiring: - Add pub mod telnet to protocol/mod.rs - Add "telnet" arm in easy.rs scheme dispatch - Add "telnet" to --version Protocols line (critical for test discovery) - Add telnet:// to include_headers suppression list in transfer.rs - Add -t short flag mapping and --telnet-option handling in args.rs - Symlink *.py test scripts in run-curl-tests.sh (for negtelnetserver.py) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Test plan
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