Ken Johnson
dcbc03e52b
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Multi-file transfer fix (matches binkd sent_fls): - After sending all data for a file, close immediately and add to SentFiles tracking list instead of blocking on M_GOT. Next file starts sending right away — no serial waiting. - M_GOT/M_SKIP now match against SentFiles by filename, not the current TxFile (which may already be on the next file). - EOB only sent when send queue empty AND all SentFiles confirmed. - SessionDone checks SentFiles is empty. - Fixes bidirectional multi-file sessions that were losing files because M_FILE for the next file arrived before previous file's data was fully transmitted. M_FILE receive handler (matches Argus bdrxReceData M_FILE): - When new M_FILE arrives while receiving, finalize current file if data is complete (send M_GOT), or skip if incomplete. - Previously always skipped, discarding completed files. Other changes: - Add 'showkey' command: prints public key from configured private key - Update keygen: show PublicKey as config comment (not parsed at system level) - Replace daemon Sleep(100) with select() on listener socket - Strip trailing NUL bytes from BinkP args (Argus FormatBinkPMsg adds #0) Tested: 5-node simultaneous bidirectional (45 files SHA256 verified), Argus/Radius 4.010 interop (48 files inbound + 5 outbound), BinkIT/sbbs, both BinkP CRAM-MD5+CRYPT and Comet ED25519+ChaCha20 protocols.
Comet Mailer
A modern FidoNet TCP mailer daemon for the 2020s.
Comet provides direct TCP file transfer with a purpose-built protocol while maintaining full BinkP/1.1 (FTS-1026) compatibility. Both protocols are auto-detected on the same port.
Features
- Direct TCP file transfer with SHA-256 verification
- Bidirectional transfer with sliding window flow control
- ED25519 public-key authentication (no shared secrets needed)
- CRAM-MD5 password authentication (passwords never sent in clear)
- X25519 + ChaCha20 encryption (when using ED25519 auth)
- Full BinkP/1.1 compatibility (FTS-1026) with auto-detection
- Inline file requests (Hydra-style, within active sessions)
- FTS-5 nodelist integration (automatic IP/port lookup)
- BSO outbound scanning with point directory support
- Optional zlib compression (per-block, automatic)
- Multi-session daemon with per-node BSY locking
- Config hot-reload (edit config while Comet is running)
- Embeddable in BBS software via log and event callbacks
- Cross-platform: Linux, FreeBSD, DOS, Windows, OS/2
Quick Start
comet keygen # generate ED25519 keypair
comet # run as daemon (listen + poll)
comet call 1:213/723 # single outbound call
comet -c /path/to/comet.cfg # use alternate config file
comet -d call 1:213/723 # debug/trace mode
See COMET.SAM for an annotated sample configuration.
Platforms
| Platform | Status | Notes |
|---|---|---|
| Linux x86-64 | Production | Primary platform |
| FreeBSD x86-64 | Production | Cross-compiled from Linux |
| DOS (FreeDOS) | Production | Requires CWSDPMI + Watt-32 packet driver |
| Windows 64-bit | In progress | WinSock2, needs type compatibility fixes |
| OS/2 | Experimental | FPC OS/2 Sockets unit, untested |
Building
Requires Free Pascal Compiler (FPC) 3.2.x.
make # Linux (default)
make freebsd # FreeBSD cross-compile
make dos # DOS cross-compile
make win64 # Windows 64-bit cross-compile
Documentation
COMET.DOC— Full operator manualCOMET.SAM— Annotated sample configurationFSP-COMET.001— Wire protocol specification
Tested Against
- binkd (reference BinkP implementation)
- Radius/Argus 4.010
- Fimail 0.1.0
Contact
- FidoNet: 1:218/720
- Email: ken@rail-city.net
License
GPL-2.0