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RTCDataChannel is a part of WebRTC and is used for p2p messaging over SCTP.

I'm seeing some answers on stackoverflow where people mention growing browser support https://stackoverflow.com/a/14539939/1267910

However, I'm wondering if browser support should be the main concern when using WebRTC, as it seems that the transport protocol it's running on (SCTP) is not handled very well by many home routers, which aren't getting updated as fast as some of the browsers are. https://stackoverflow.com/a/7359410/1267910

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Georgii Oleinikov
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    WebRTC data channels use [SCTP over DTLS over UDP](http://stackoverflow.com/a/20508055/918910), which means UDP packets are sent. There's also TURN TCP when nothing else will do. – jib Feb 18 '17 at 02:15
  • Thanks, that's what I was looking for! – Georgii Oleinikov Feb 18 '17 at 08:42

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