InvalidSessionDescriptionError: Invalid description, no ice-ufrag attribute

Question

I'm trying to get asterisk 11.20.0 running with WebRTC (sip.js 0.72 which I believe is a fork of jssip), but I'm seeing the following (and the called party rings, but when the phone is answered the call gets hung up).

This is my setup:

What I see:

In the CLI:

[2015-11-24 01:01:53] NOTICE[43619][C-00000002]: res_rtp_asterisk.c:4441 ast_rtp_read: Unknown RTP codec 95 received from '(null)'

In Firefox:

InvalidSessionDescriptionError: Invalid description, no ice-ufrag attribute

Attachments:

• SIP Dialogue (Asterisk CLI)
• Webphone Log
• Config Files (httpd.conf, sip.conf, rtp.conf)
• Asterisk Compiled with Libuuid & Friends

What I've tried so far:

• Changed webRTC implementations (tried chrome and firefox both with SIPML and SIP.JS)
• Set the STUN server to null on the client side (stunServers: ['stun:null'])
• Configured properly (I hope) my sip.conf and rtp.conf and httpd.conf
• Made sure I have libuuid, uuid and their -devel companions and after i've recompiled asterisk.

What I've read:

• http://forums.asterisk.org/viewtopic.php?p=201702
• https://wiki.asterisk.org/wiki/display/AST/Asterisk+WebRTC+Support
• https://wiki.asterisk.org/wiki/display/AST/WebRTC+tutorial+using+SIPML5
• http://jssip.net/documentation/misc/interoperability/asterisk/
• http://sipjs.com/guides/server-configuration/asterisk/
• https://kunjans.wordpress.com/2015/01/09/web-sip-client-sipml5-with-asterisk-13-on-centos-6-6/
• http://forums.digium.com/viewtopic.php?f=1&t=89798

Please, if you can, give me a hand. I'm about to smash my box with a sledge hammer.

Answer 1

Faced same issue and followed instruction in http://forums.digium.com/viewtopic.php?f=1&t=90167 realise that:

This issue is caused because you asterisk don't have ICE support, you can solve that by installing the uuid/libuuid and uuid-devel/libuuid-devel packages on your system. Then recompile asterisk(be sure to rerun the configure script before the make command).

I did recompile my Astersik 11.16.0 with patch for ECDH support and fallback to prime256v1 https://issues.asterisk.org/jira/browse/ASTERISK-25265 and looks like lost uuid support at that time. Reverting back to non-patched version (with uuid support, use to be compiled before) resolved my issue with "no ice-ufrag attribute" error in Firefox console and calls are going well now from WebRTC client SIPML5 based to asterisk, but not in opposit direction