FFL

🚀 What's New in v3.9.7

This release focuses on edge-case bug fixes, internationalization compatibility, and making advanced streaming workflows incredibly resilient—even under extremely poor network conditions.

🐛 Bug Fixes & Improvements

• International Filename Support: Fixed an issue where files with specific non-ASCII characters (such as the Russian filename технический) could not be found or resolved correctly by the system.
• WebRTC Network Resilience: Fixed a bug where WebRTC transfers could hang indefinitely waiting for peer responses in highly unstable network environments. The connection recovery process is now much faster and more reliable.
• Duplicate Receipts: Resolved an issue that occasionally caused the --receipt download completion email to trigger twice.
• WebRTC Completion Tracking: Improved the reliability of the /complete signal during WebRTC transfers to prevent completion statuses from being lost at the very end of a download.

🛠️ Advanced Streaming: Zero-Disk Fallback

• Support for --stdin-cache off + --e2ee + WebRTC Fallback: This is a major technical improvement for DevOps and high-speed streaming. Previously, if you piped data in with --stdin-cache off (to avoid writing to disk) alongside End-to-End Encryption (--e2ee), a dropped WebRTC connection meant the transfer would fail. Because there was no disk cache, the system couldn't fall back to HTTP relay to resume.

  We have implemented a short-lived, in-memory sliding window buffer. Now, even with zero disk footprint, ffl retains just enough context in memory to seamlessly fall back to HTTP and resume the encrypted stream if the P2P connection drops. You get maximum speed, maximum security, and zero disk I/O—without sacrificing reliability.

Windows (native)

• x86_64 → ffl-v3.9.7-x86_64-windows.zip
  Unzip to get ffl.exe.

Linux (native)

We publish two glibc baselines. Pick the highest baseline that does not exceed your system glibc:

• glibc 2.39+ — smaller & faster

  • ffl-v3.9.7-manylinux_glibc2.39-x86_64-linux.tar.gz
  • Best for newer distros (e.g., Ubuntu 24).

• glibc 2.28+ — widest compatibility

  • ffl-v3.9.7-manylinux_glibc2.28-x86_64-linux.tar.gz
  • Works on older distros (e.g., Ubuntu 20); larger due to additional internal linking.

⚠️ If your system is musl-based (e.g., Alpine) or you’re unsure about glibc, prefer APE ffl.com.

macOS (native)

• Apple Silicon (arm64) → ffl-v3.9.7-aarch-darwin.tar.gz
• Intel (x86_64) → ffl-v3.9.7-x86_64-darwin.tar.gz

The archive unpacks to a single ffl binary.

🧰 APE (cross-platform single file, zero external deps)

• ffl.com — Single-file build that runs natively on Linux, macOS, Windows, FreeBSD, OpenBSD 7.3, NetBSD, BIOS, and Android (Termux).
• fflo.com — Alternative APE build that is exactly aligned with the open-source repo (no additional/proprietary addons).
  As a result, features that require closed-source components—such as upload to server (e.g., --upload)—are not available.

For a deeper comparison between native and APE, see the README’s notes.