Introduction
The WebRTC architecture for desktop (Media/WebRTC/Architecture) is based on a single process model where we can directly access platform resources from the WebRTC code. B2G, however, has a split process architecture (B2G/Architecture) where the renderer/content process runs in a sandbox and has limited access to platform resources. Generally, it accesses them by doing IPC calls via https://developer.mozilla.org/en-US/docs/IPDL
The current architectural split looks like:
