sfn

Small and simple utility to send files over network.

This is the reference implementation of sfn L4 protocol.

Building from source

Requirements:

• D compiler with std.socketstream support. One such compiler is gdc 6.3.0 which can be found in Debian 9 (stretch). LDC and DMD are supported if this module is present.
• GNU make.

Assuming you're preparing Docker build on Debian 9:

sudo docker run --rm -ti -v (pwd):/data debian:stretch bash
cd /data
apt update
apt install make build-essential gdc
make gdc

---

Type make to use DMD (or make ldc, or make gdc) to build sources.

make install will install sfn to /usr/bin/ (other destinations are not supported yet). install also accepts DESTDIR variable allows you to set root folder different from / (for example: make DESTDIR=/tmp/mypkg install).

If you need to rebuild the manpage (typically you don't), install ronn and run make man.

There also is experimental Ninja support. Try ninja and ninja -t clean.

Help

Usage:

sfn --listen [options] [files to send]
sfn --connect <address> [options] [files to send]

sfn will establish a connection, send all the files, receive all the files from another side and then exit.

-l and -s are aliases for --listen, -c is an alias for --connect.

Options:

• --version, -v: Show sfn version and exit.
• --help, -h: Show this text and exit.
• --port, -p: Use specified port. Defaults to 3214.
• --prefix, -f: Add prefix to received files' path and name. For example: /home/user/downloads/, sfn-, /etc/file-.
• --no-external-ip, -n: Don't perform external IP detection and reverse DNS lookup.
• --zenity, -z: Call zenity to select files using standard GTK dialog.
• --no-integrity-check, -e: Disable integrity check after transfer. This option was added for compatibility with older versions of sfn.

Related projects

Take a look at https://github.com/sfn-software for alternative implementations in different languages.