gday

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

Installation

To run the executable directly:

1. Download an executable from releases.
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

• No limit on the size of files and folders sent.

• Files are sent directly, without relay servers. A server is only used to exchange socket addresses at the beginning.

• Automatically resumes interrupted transfers. Just gday send the same files, and partial downloads will be detected and resumed.

• Doesn't require port forwarding. Instead, uses TCP Hole Punching to traverse NATs. This may not work on very restrictive NATs. If that happens, enable IPv6 or move to a different network.

• If a contact exchange server is down, just uses a different one from the default list. Or specify your own with --server.

• Server connection encrypted with TLS and file transfer end-to-end encrypted with ChaCha20Poly1305.

• Automatically tries both IPv4 and IPv6.

• Resistant to malicious servers impersonating your peer. Uses SPAKE2 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            Connect to server with TCP instead of TLS
  -v, --verbosity <VERBOSITY>  Verbosity. (trace, debug, info, warn, error) [default: warn]
  -h, --help                   Print help
  -V, --version                Print version

Similar Projects

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Related

• 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.