1. The Clinical Necessity of Virtual Consultations
In response to physical clinic closures and infection control protocols in early 2020, healthcare providers required zero-install, browser-based telehealth portals. Patients and doctors needed instant, encrypted peer-to-peer audio/video consultations that operated natively across mobile and desktop browsers.
2. WebRTC Peer-to-Peer Protocol Architecture
WebRTC provides sub-second latency video streaming without third-party plugins. The architecture consists of three core components: a Node.js/WebSocket signaling server for exchanging SDP offers and ICE candidates, public STUN servers for NAT discovery, and Coturn TURN servers providing media relay fallbacks when symmetric NATs prevent direct peer-to-peer UDP connections.
3. HIPAA and End-to-End Encryption Compliance
WebRTC enforces mandatory cryptographic protocols: Datagram Transport Layer Security (DTLS) negotiates key exchange, while Secure Real-time Transport Protocol (SRTP) encrypts real-time voice and video packets using AES-128 or AES-256 ciphers. No unencrypted clinical video streams exist in transit.
4. Clinical Workflow Integration
Integrating WebRTC rooms with Hospital Information Systems (HIMS) requires dynamic JWT-authenticated room tokens, preventing unauthorized patient eavesdropping and archiving call metadata directly into the Electronic Health Record (EHR).
