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Changelog

All notable changes to this project will be documented in this file.

1.0.0 - 2026-08-17

  • MeshCore 2.3.7 client compatibility: create_serial(port, baudrate=...), create_tcp(host, port), disconnect(), contact resolution, and start_auto_message_fetching().
  • Binary-safe transport: file chunks are sent as AZM1: + base64 text so they survive companion send_msg(dst, msg: str) and stay distinct from chat.
  • Inbound events read MeshCore {pubkey_prefix, text} (legacy Meshtastic-style decoded.payload is still accepted).
  • Auto-reconnect is enabled on serial and TCP companion connections.
  • Daemon auto-receive writes inbound files into incoming_dir using the advertised filename. Optional allowed_senders allowlist.
  • Receive-side max_file_size_bytes enforcement (default 1 MiB). Set 0 to disable. Oversized advertised files are rejected before write. Directory extracts also refuse archives whose uncompressed size exceeds the cap.
  • Stop-and-wait ACKs between DATA blocks, with timed retransmission of the last unacked packet.
  • Invalid JSON configs are no longer overwritten with defaults.
  • Legacy mesh_packet_chunk_size values above the encoded TXT_MSG limit are clamped instead of aborting startup.
  • Packaged as version 1.0.0 (pyproject.toml, --version, console script).
  • CI runs on Python 3.10 and 3.12 and fails on flake8 findings.

Unreleased (folded into 1.0.0)

  • Security: Prevent ZipSlip by validating zip entries before extraction in akita_zmodem_meshcore.receive_directory(); added _safe_extract_zip() to safely extract archives.
  • Concurrency: Offloaded blocking MD5 checksum calculations to background threads with asyncio.to_thread to avoid blocking the event loop during send/receive operations.
  • Reliability: Fixed Sender ACK handling in zmodem.py so the sender correctly updates and seeks to acknowledged offsets, improving resume/retransmit behaviour.
  • Robustness: Added configuration validation and improved error handling for missing MeshCore client, invalid destinations, directory passed to send_file, and file-open failures during receive.
  • Cleanup: Introduced global atexit cleanup for temporary zip files and added optional cleanup flags to directory send/receive methods.
  • Security/maintenance: Iteration loops now copy transfer dict before modification to avoid runtime errors.