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Guides and information for WebRTC developers

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ICE

Guide code, ICE, NAT, STUN, symmetric

Am I behind a Symmetric NAT?

WebRTC establishes peer-to-peer connections between web browsers. To do that, it uses a set of techniques known as Interactive Connectivity Establishment or ICE. ICE allows clients behind certain types of routers that perform Network Address Translation, or NAT, to establish direct connections. (See the WebRTC glossary entry for a good introduction.) One of the first problems is […]

Philipp Hancke · May 15, 2017

Reverse-Engineering Blackbox Exploration, ICE, slack, TURN, webrtc-internals

Dear Slack: why is your WebRTC so weak?

  Dear Slack, There has been quite some buzz this week about you and WebRTC. WebRTC… kind of. Because actually you only do stuff in Chrome and your native apps: I’ve been there. Launching stuff only for Chrome. That was is late 2012. In 2016, you need to have a very good excuse to launch something […]

Philipp Hancke · March 3, 2016

Guide code, extension, ICE, ip leakage, Walkthrough

How to stop a leak – the WebRTC notifier

The “IP Address Leakage” topic has turned into a public relations issue for WebRTC. It is a fact that the WebRTC API’s can be used to share one’s private IP address(es) without any user consent today. Nefarious websites could potentially use this information to fingerprint individuals who do not want to be tracked. Why is this […]

Chad Hart · August 4, 2015

Reverse-Engineering apple, Blackbox Exploration, FaceTime, ICE, SDES

Facetime doesn’t face WebRTC

This is the next decode and analysis in Philipp Hancke’s Blackbox Exploration series conducted by &yet in collaboration with Google. Please see our previous posts covering WhatsApp and Facebook Messenger for more details on these services and this series. {“editor”: “chad hart“}   FaceTime is Apple’s answer to video chat, coming preinstalled on all modern iPhones and iPads. It […]

Philipp Hancke · June 9, 2015

Guide DataChannel, ICE, SDP, signaling, TURN, Walkthrough

The Minimum Viable SDP

  One evening last week, I was nerd-sniped by a question Max Ogden asked: That is quite an interesting question. I somewhat dislike using Session Description Protocol (SDP)  in the signaling protocol anyway and prefer nice JSON objects for the API and ugly XML blobs on the wire to the ugly SDP blobs used by […]

Philipp Hancke · March 31, 2015

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