Tags Tag archive: 'datachannel'

July 2, 2018

How to avoid Data Channel breaking

Contributed by Nils Ohlmeier, Hacking on real time communications since 2002

All the browser with support for negotiating data channels via SDP are using the same format. But the format is based on a specification from 2013. Since the specification has changed a lot since then it’s time to update the implementations to meet the latest spec.

Current status

If you are negotiating a data channel today in Firefox 61 (or current Chrome release) the SDP will looks something this:

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November 3, 2017

Large Data Channel Messages

Contributed by Nils Ohlmeier, Hacking on real time communications since 2002

Until very recently you had to be careful about the maximum message size you could send over a WebRTC data channel. Especially if the data channel had been established between Firefox and Chrome. See here for a very good explanation of the problem.

The good news is that bug 979417, a big contribution by Lennart Grahl, has landed in Firefox 57, which adds EOR handling to Firefox data channels.

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