Wush — Lightning-Fast File Transfers Without Middlemen

Sound familiar? Need to quickly send a large file to a colleague or connect to a remote server, but all existing solutions are either slow or require complex setup. This is exactly the problem that wush solves — a minimalist tool from the creators of Coder that turns data transfer into a single action.

What's in the Box

Wush is like magic-wormhole, but on steroids. Key advantages:

• Full P2P architecture — no trusted servers for authentication
• Speeds up to 376 MB/s (yes, you read that right)
• Runs over WireGuard — VPN-level security
• Two connection modes — direct UDP or via DERP relays

# Пример передачи файла (2.1 ГБ за секунды!)
$ wush cp huge_file.iso
Uploading "huge_file.iso" 100% |████████████████| (2.1/2.1 GB, 376 MB/s)

How It Works Technically

Under the hood, wush uses:

1. Tailscale tsnet — userspace WireGuard implementation
2. DERP servers as fallback for strict NATs
3. X25519 keys for authentication

Access key structure:

112v1RyL5KPzsbMbhT7fkEGrcfpygxtnvwjR5kMLGxDHGeLTK1BvoPqsUcjo7xyMkFn46KLTdedKuPCG5trP84mz9kx
├─ UDP-адрес (19Б)
├─ Регион DERP (2Б)
├─ Публичный ключ сервера (32Б)
└─ Приватный ключ отправителя (32Б)

Use Cases

1. Emergency log transfer from production server
2. Backup between data centers
3. Remote debugging via SSH session
4. Syncing large datasets in ML projects

Installation — One Step

# Linux/macOS
curl -fsSL https://github.com/coder/wush/raw/main/install.sh | sh

# Или через Homebrew
brew install wush

For maximum speed on Linux:

sudo setcap cap_net_admin=eip $(which wush)

Why This Is a Breakthrough

• 10-100x faster than SCP/SFTP
• No VPN setup required
• Works even behind double NAT
• Compatible with any WireGuard-compatible tools

Limitations

• Requires Go 1.20+
• Strict NATs will only work via DERP
• No GUI yet (CLI only)

Wush is the ideal choice for:

• DevOps engineers tired of slow SCP
• Developers working with large binaries
• Teams that prioritize data transfer security

Try it — sending a gigabyte-sized file will take less time than reading this article!