WebRTC. The simplified process of using WebRTC in this example looks like this: both clients obtain their local media streams; once the stream is obtained, each client connects to the signaling server; once the second client connects, the first one receives a ready event, which means that the WebRTC connection can be negotiated

WebRTC is a peer-to-peer communications protocol that makes it very easy for two browsers to establish voice or video communications without the need of an intermediate server. As you might guess this sometimes needs knowledge of a machine's public and local IP address. Why does WebRTC need the local IP? - Information Security This question Why is my internal IP address (private) visible from the Internet? highlights that the Local IP can be accessible from a website because WebRTC needs it.. However it does not answer why WebRTC needs it. From the wiki page of the STUN Protocol : . When a client has evaluated its external address, it can use this as a candidate for communicating with peers by sharing the external WebRTC Leak Test - BrowserLeaks IP address detection using JavaScript. Starting work on WebRTC API, the web browser communicates with the STUN server and shares information about local and public IP addresses even if you are behind NAT and use a VPN or Proxy. This tool will show if your real public IP address is leaking out. CourtCall: WebRTC Troubleshooting Click here to test your Network. Click here to test your Connectivity. Click here to test your Bandwidth. Local Snapshot Console Errors Room Participants Video Statuses Video Windows Audio Statuses Proceedings. WebRTC Troubleshooting.

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PSA: Private IP addresses exposed by WebRTC changing to Summary. WebRTC currently lets web applications discover private IP addresses to enable direct connectivity between hosts on a local network. While private IP addresses do not uniquely identify browser users, they may still be used for tracking purposes.