Getting Started

Echo is a peer-to-peer file transfer tool over UDP, designed for simplicity and speed. You can use it interactively or with command-line flags.

1. Download Echo

Visit the GitHub Releases and download the binary for your system.

Make it executable if needed:

chmod +x echo

2. Run Echo (Interactive Mode)

If you run Echo with no arguments, it will guide you through the setup:

./echo

You’ll be prompted to:

• Select send or receive
• Enter your local port
• Enter the peer’s address
• (If sending) Provide a file path

3. Run Echo (CLI Mode)

To use Echo non-interactively:

Send a file:

./echo --mode send --port 9000 --remote 192.168.1.5:9001 --file mydoc.pdf

Receive a file:

./echo --mode receive --port 9001 --remote 192.168.1.4:9000

4. Verify Operation

Make sure:

• The ports are open on both ends.
• Both peers run the compatible version.
• They're on reachable networks (LAN or port-forwarded public IP).

5. Help

See available flags:

./echo --help