Bilibili Tech
Feb 7, 2025 · Frontend Development
Building a WebRTC Video Call System: Signaling, Direct Connection, and Selective Forwarding
The article explains how to build a WebRTC video‑call system using standard APIs, detailing signaling via SDP exchange, direct peer connections, the transition to a selective‑forwarding server that forwards streams efficiently, and employing a data channel for RPC‑based room and stream management across web, Android, iOS, and Windows clients.
Data ChannelSDPSelective Forwarding
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