WebRTC:IsolatedNetwork
lastmod 2023-03-23created 2020-07-229 edits
How to use WebRTC in an isolated network environment (Offline).
Abstrtact
If you want to use WebRTC in the Firefox browser while cut off from the outside (an Offline PC), configure it in the following order.
Test environment
- The browser is Firefox.
- The OS is Ubuntu Linux.
- The server is implemented with aiortc, and the client with javascript.
Problems
RTCPeerConnections when the network is down
Creating an RTCPeerConnection object while the network is disconnected produces the following error.
See RTCPeerConnection#Can't create RTCPeerConnections when the network is down. In short, change the network.manage-offline-status setting to false on the about:config page in Firefox.
localhost is not connect
If the STUN server is localhost, the Trickle ICE connection fails.
See Session Traversal Utilities for NAT#stun:localhost is not connect. In short, change the media.peerconnection.ice.no_host setting to true on the about:config page in Firefox.
Bigger problem
In the end, the candidate entries are missing from the SDP during the ICE connection.
Cause under investigation ..
So... create a new interface, switch it to a connected state (the Network interface state must be UP), update the /etc/hosts file, and connect the ICE server to that address. See ip_command#Installing The Linux Dummy-Network Interface for connection details.
See also
Favorite site
Articles
- WebRTC on local network? - Stack Overflow
- networking - Under which conditions and how does Webrtc PeerConnection work without a TURN server? - Stack Overflow
- p2p - webRTC peer to peer on the same physical network - Stack Overflow
- php - Is it possible to do WebRTC within Local Network from Pc to Pc with no use of Internet Access? - Stack Overflow
- WebRTC on isolated LAN without ice/stun/turn server - Stack Overflow