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

[Edwin Vandamme (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-25659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=231276#comment-231276 ] 

Edwin Vandamme commented on ASTERISK-25659:
-------------------------------------------

Clearly there are some leftovers from CentOS, but I am not 100% sure that by now I removed everything correctly.
There still is the folder /usr/lib64/openssl/engines, wich apears to have old libraries in it.

In any case, I had to change the line : {code}./config --prefix=/usr/local --openssldir=/usr/local/openssl{code}
to : {code}./config --prefix=/usr --openssldir=/usr/include/openssl{code}
Next I rebooted and recompiled Asterisk.
The RTP error has gone, but now I have the following error : {color:red}*chan_sip.c: Got SIP response 603 "Failed to get local SDP" back from...*{color}

I assume there still is a conflict between the CentOS OpenSSL en the openssl.org OpenSSL, as soon as I figured that one out I am ready to escalate this to CentOS or RedHat.


> 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
>
>
> 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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