A comprehensive guide to building a peer-to-peer video chat application using WebRTC for direct browser communication and NestJS as the signaling server. Covers the complete setup including HTTPS configuration with SSL certificates, WebSocket gateway implementation for handling offers/answers/ICE candidates, and frontend client code. Explains the four-stage WebRTC connection process, signaling requirements, and provides practical code examples for both server and client sides with troubleshooting tips.
Table of contents
Why WebRTC?Why Do We Need a Signaling Server?Project SetupBackend SetupWebRTC Requires HTTPSFrontend SetupBackend LogicWhat Are ICE Candidates?Frontend LogicTestingConclusionSort: