Note: this project is still in early-development, so expect breaking changes.

gday

Command line tool to securely send files (without a relay or port forwarding).

peer_1: gday send image.jpg folder
<Asks for confirmation>
Tell your mate to run "gday get 1.1C30.C71E.A".
Transfer complete.

peer_2: gday get 1.1C30.C71E.A
<Asks for confirmation>
Transfer complete.

Installation

To run the executable directly:

1. Go to releases and download the correct file for your platform.
2. Extract it (on Linux: tar xf <file>).
3. Run it: ./gday

To install with cargo:

$ cargo install gday

To install with brew:

$ brew install manforowicz/tap/gday

Features

• File transfer is always direct, without relay servers. A server is only used to exchange socket addresses at the beginning.
• No limit on the size of files and folders sent.
• Doesn't require port forwarding. Instead, uses TCP Hole Punching to traverse NATs. Note: this may not work on very restrictive NATs.
• Server connection encrypted with TLS and file transfer encrypted with ChaCha20Poly1305.
• Automatically tries both IPv4 and IPv6.
• Immune to malicious servers impersonating your peer. Uses SPAKE2 password authenticated key exchange to derive an encryption key from a shared secret.
• No unsafe Rust in this repository.

Usage

Usage: gday [OPTIONS] <COMMAND>

Commands:
  send  Send files and/or directories
  get   Receive files
  help  Print this message or the help of the given subcommand(s)

Options:
  -s, --server <SERVER>        Use a custom gday server with this domain name
  -p, --port <PORT>            Connect to a custom server port
  -u, --unencrypted            Use raw TCP without TLS
  -v, --verbosity <VERBOSITY>  Verbosity. (trace, debug, info, warn, error) [default: warn]
  -h, --help                   Print help
  -V, --version                Print version

Similar Projects

	No relays	Works beyond LAN	Works through very strict NATs	No port forwarding	Encrypted	Can resume interrupted transfers
gday	✅	✅	❌	✅	✅	✅
magic-wormhole	❌	✅	✅	✅	✅	✅
croc	❌	✅	✅	✅	✅	✅
p2pcopy	✅	✅	❌	✅	❌	❌
iwant	✅	❌	❌	✅	❌	❌
zget	✅	❌	❌	✅	❌	❌
sharedrop	❌	✅	✅	✅	✅	❌
filepizza	❌	✅	✅	✅	✅	❌
Personal SSH or HTTPS	✅	✅	✅	❌	✅	❌
Personal FTP	✅	✅	✅	❌	❌	❌
Dropbox, Google Drive, etc.	❌	✅	✅	✅	✅	❌
Delivering a USB drive	✅	✅	✅	✅	✅	❌

Open an issue to add more projects to this list.

In this repository

• gday - Command line tool for sending files.
• gday_server - Server that lets two peers share their socket addresses.
• gday_hole_punch - Library for establishing peer-to-peer TCP connection.
• gday_file_transfer - Library for transferring files over a connection.
• gday_encryption - Library for encrypting an IO stream.
• gday_contact_exchange_protocol - Library with protocol for two peers to share their socket addresses via a server.

See CONTRIBUTING.md if you'd like to contribute to this project.