Changes that enables ICE-TCP support #1802
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Description
This PR contains changes from these PRs:
#1627
#1692
and replaces them
It enables ICE-TCP support both on BE and FE. Both previous PRs did not offer/answer with TCP and server reflex candidates correctly. In particular, they didn't contain passive/active and raddr/rport information in their candidates. For example, BE offered candidates
Both of them are not correct. The first one doesn't contain tcptype information (active/passive). Another doesn't have raddr/rport data for srflx. The same for relay candidates
Also, this PR contains the latest version of adapter.js taken from https://github.com/webrtc/adapter/blob/master/release/adapter.js. This change fixes the issue when TCP candidates were not offered by FE
These changes were verified by blocking UDP traffic using iptables and using Wireshark for making sure that media is running through TCP.
Also, these changes have been tested with libnice. However, these changes contain nicer modifications as well, but I didn't verify it
Changes in Client or Server public APIs
No changes in APIs