WebRTC Peer Connection

WebRTC Peer Connection (RTCPeerConnection API) is the core browser API for establishing direct peer-to-peer connections between browsers. It handles the complex network negotiation (ICE candidate exchange, STUN/TURN, SDP offer/answer) so developers can focus on application logic. Once connected, you can transmit audio, video, and arbitrary data with minimal latency. The connection requires a signaling mechanism (separate from WebRTC)—usually a WebSocket server—to exchange SDP offers/answers and ICE candidates. After connection is negotiated, data flows peer-to-peer.