Serverless P2P Video Call - Zero Infrastructure

🔗 Signal Exchange (No Server Required!)

How to Connect

Caller: Click "Create Offer" and copy the signal
Caller: Send the signal to your friend (email, chat, carrier pigeon)
Receiver: Paste the signal in "Their Signal" and click "Accept"
Receiver: Copy YOUR signal and send it back to the caller
Caller: Paste the response and click "Connect"
🎉 You're connected! No servers touched.

📤 Your Signal

📥 Their Signal

QR Code & Shareable Link

Generate a scannable QR code or shareable link with your signal. Send it via any messaging app - the recipient can join instantly!

Click "Generate QR" after creating an offer

Your Signal QR Code

Scan Their QR Code

Ready to scan

🔗 Shareable Link

Share this link directly - no QR scanner needed!

Create an offer first, then generate QR to get shareable link

Audio Tone Signaling (Experimental!)

Encode your signal as audio tones. Play them through speakers, and the other device listens!

⚠️ Works best in quiet environments. Hold devices close together.

Status: Ready

🧠 How This "Impossible" Thing Works

Conventional wisdom says P2P video calls require STUN/TURN servers for NAT traversal. This app proves that's not entirely true. Here's the trick:

WebRTC generates SDP (Session Description Protocol) - a text blob containing your IP, ports, and media capabilities
We exchange SDP manually - via copy/paste, QR codes, or even audio tones
ICE candidates are embedded - your local network candidates are included, enabling direct connection
NAT traversal happens naturally - if both peers are on IPv6 or have compatible NAT types, direct connection works!

⚠️ Caveat: This works ~60-70% of the time. Symmetric NATs and strict firewalls can still block connections. But when it works, you've achieved TRUE peer-to-peer with zero infrastructure!

WebRTC Manual SDP Exchange QRious Library jsQR Scanner Shareable Links Web Share API Audio FSK Modulation Single HTML File