What is WebRTC?
WebRTC (Web Real-Time Communication) is an open-source project that enables real-time communication directly in web browsers. It powers video calls, voice chat, and file transfers without plugins.
How WebRTC Works
- Signaling: Peers exchange connection information through a signaling server
- ICE Candidates: The best connection path is determined
- DTLS Handshake: Secure connection is established
- Data Transfer: Files flow directly between browsers
WebRTC Security
WebRTC is secure by design:
- DTLS: All data channels are encrypted
- SRTP: Media streams are encrypted
- No Plugins: Reduces attack surface
- Permission-Based: Users must grant access
Advantages for File Transfer
- Speed: Direct connection, no server relay
- Privacy: Files don't touch third-party servers
- No Limits: Transfer any file size
- Cross-Platform: Works on any modern browser
Limitations
- Both parties must be online simultaneously
- NAT traversal can sometimes fail
- Older browsers may not support it
ZainDesk and WebRTC
ZainDesk uses WebRTC's data channels for file transfer, combined with PeerJS for simplified connection management. This provides the perfect balance of security, speed, and ease of use.