[asterisk-bugs] [JIRA] (ASTERISK-25659) res_rtp_asterisk: ECDH not negotiated causing DTLS failure occurred on RTP instance

[Alexander Traud (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-25659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=231322#comment-231322 ] 

Alexander Traud commented on ASTERISK-25659:
--------------------------------------------

When it comes about fixing this upstream, I [filed that patch|https://bugzilla.redhat.com/show_bug.cgi?id=1352941] with Red Hat and mentioned you as reporter. If I understand correctly, if an OpenSSL issue is fixed there, the change moves down to CentOS Lunix one day. However, please, double-check. Consequently, everything is done from your and my side. Now, those changes have to be integrated by the project maintainers and released. Even that is on track already.

> res_rtp_asterisk: ECDH not negotiated causing DTLS failure occurred on RTP instance
> -----------------------------------------------------------------------------------
>
>                 Key: ASTERISK-25659
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25659
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_rtp_asterisk
>    Affects Versions: 11.22.0, 13.9.1
>         Environment: Using the following on the server :
> CentOS	  	  	7.2	  	2015-11
> Asterisk	  	  	13.6	  	2015-10
> jansson  	  	  	2.7	  	2014-10-02
> PJSIP (pjproject)	2.4.5	2015-08-12
> sipML5  	  		2.0.2	2015-12
> Using the following on the client :
> CentOS  	  	  	7.2 KDE desktop
> Chrome Version  	47.0.2526.106 (64-bit) 
>            Reporter: Edwin Vandamme
>            Assignee: Alexander Traud
>            Severity: Minor
>         Attachments: asterisk.log, dtls_centos_step_1.patch, dtls_centos_step_2.patch, ecdh.patch, openssl-1.0.1e-ecdh-auto-dtls.patch, openssl.spec.patch
>
>
> This issue has been on the forum for over a week, but I did not get any feedback, http://forums.asterisk.org/viewtopic.php?f=1&t=96461&sid=528c724d236a38e60e868817462c6f26, so I have now escalated this as a bug report.
> Using the described environment, I get the following error in my Asterisk log :
> res_rtp_asterisk.c: DTLS failure occurred on RTP instance '0x7fe8c8024178' due to reason 'missing tmp ecdh key', terminating
> res_rtp_asterisk.c: RTP Read error: Unspecified. Hanging up.
> An earlier bug report listed this as a problem on FireFox : ASTERISK-25265
> It is said to be fixed in 13.6
> WebRTC is not yet in production on my system, due to the constant changes, but in earlier tests everything worked fine. As far as I can tell, it all started when Chrome forced the usage of https over http.
> Dialing from a WebRTC peer to Asterisks works just fine.
> For various reasons I use sip.conf, not pjsip.conf.
> Certificates used are propper certificates, not self signed versions.
> I attached (asterisk.log) part of the Asterisk log file with "sip debug on", start of call till failure.



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