Building a Cross-Platform WebRTC Video Calling Solution in .NET MAUI | Community Feed

Real-time audio and video is now a core feature, not a nice-to-have. This guide shows how to build your own WebRTC-based calling platform in .NET MAUI so you control quality, security, network handling, and UX across Android, iOS, Windows, and MacCatalyst.

What you’ll learn

WebRTC fundamentals and why separating signaling from media transport keeps the architecture clean
The full component set: signaling server (SignalR/WebSockets), STUN for address discovery, and TURN for relaying through firewalls
The offer/answer SDP handshake and ICE candidate exchange, plus an IVideoCallService abstraction over native platform APIs
Capturing and rendering local/remote video, screen sharing, and peer-to-peer data channels for chat, whiteboards, and file transfer
A CallState machine with MVVM integration, adaptive bitrate, echo cancellation, and security via DTLS/SRTP and authenticated signaling
Scaling from mesh to SFU for group calls, plus real enterprise scenarios and future AI enhancements

A comprehensive blueprint if you’re building serious real-time communication into a MAUI app.