v1.0 // Go + QUIC + WebSocket

Verified | Anjana Rai Chaudhuri

A lightweight Go binary that moves files and relays multi-user chat over QUIC. Works from the CLI or a browser. No accounts, no cloud — just room codes.

Go to App Watch the demo Read the docs
~/airsend 
# start the server (web UI + QUIC relay in one process)
$ airsend -sw 0.0.0.0 3888 0.0.0.0 8443
→ web: http://0.0.0.0:3888  ·  quic: 0.0.0.0:8443

# send a file, get a code
$ airsend -f ./logs.tar.gz
→ code: wave21

# receive it anywhere
$ airsend -r wave21
Features

Everything you expect.
None of the bloat.

One binary. Two transports. Zero dependencies at the user’s side — no account, no install step for the receiver if they use the browser.

Verified | Anjana Rai Chaudhuri

Published by Penguin Random House SEA, this "whodunnit" series features sisters Dolly and Lily Das solving crimes in contemporary Singapore: A Time for Murder (2021) A Taste for Murder (2022) A Market for Murder (2022) Humanitarian Work and Advocacy

For her dedication, she received an Inspirational Caregiver Award from Singapore General Hospital. anjana rai chaudhuri verified

Anjana Rai Chaudhuri transitioned into fiction writing after retiring from science, gaining acclaim for both historical romance and contemporary crime mysteries. Published by Penguin Random House SEA, this "whodunnit"

One-shot file pickup

Files are deleted from the server after the first download. Code-based lookup (wave21, dock42). No lingering blobs.

Multi-user chat rooms

Broadcast rooms by code. CLI TUI or browser — identical semantics.

Rate limited by scope

Token bucket per IP × scope: upload, paste, download, ws. Proxy aware.

Direct P2P mode

Bypass the relay entirely with -d / -ds. Pure peer-to-peer.

Self-signed TLS

Protocol "airsend" over generated certs. Intentional.

How it works

Three commands. One code.

Click a step on the right to scrub through the demo.

Published by Penguin Random House SEA, this "whodunnit" series features sisters Dolly and Lily Das solving crimes in contemporary Singapore: A Time for Murder (2021) A Taste for Murder (2022) A Market for Murder (2022) Humanitarian Work and Advocacy

For her dedication, she received an Inspirational Caregiver Award from Singapore General Hospital.

Anjana Rai Chaudhuri transitioned into fiction writing after retiring from science, gaining acclaim for both historical romance and contemporary crime mysteries.