[OpenSIPS-Users] SDES and DTLS mutually exclusive

[Răzvan Crainea]

You should use the SDES-off flag to rtoengine.

Best regards,

Răzvan Crainea
OpenSIPS Core Developer
http://www.opensips-solutions.com

On 7/4/20 10:34 PM, Robert Dyck wrote:
> I have run into an issue with rtpengine and the ICE=force option.
> 
> To quote the rtpengine README
> 
> With `force`, ICE attributes are first stripped, then new attributes are
>         generated and inserted, which leaves the media proxy as the only 
> ICE candidate.
> 
> When using the force option where I think it will be appropriate I found 
> it also adds crypto attributes. I believe this invokes SDES security. If 
> the setup attribute is also present ( DTLS security ) the call fails 
> with bad description. SDES=off does not prevent this behaviour. The 
> error message from the UA says there cannot be both.
> 
> a=crypto:1 AES_CM_128_HMAC_SHA1_80 
> inline:/msDyiV8x6qpcH4m1iEmxo8aqAAhhkGctQbxvkNy
> 
> a=crypto:2 AES_CM_128_HMAC_SHA1_32 
> inline:JgDv7fMfKd1GQcFq9Jn0tMf1C5DE0VaRDe6Js8D6
> 
> a=crypto:3 AES_192_CM_HMAC_SHA1_80 
> inline:CiCkAETMov/tbVsqykp7j3/PB7aUfQjv+nozBQuOUMBnJlrm8bU
> 
> a=crypto:4 AES_192_CM_HMAC_SHA1_32 
> inline:6ktVsgwfiGg4US2BLWuV3XpCt0fvkiuFgcEr8n83KDln8w9ar+c
> 
> a=crypto:5 AES_256_CM_HMAC_SHA1_80 
> inline:l1pr/67vqwthDdnRoSaTbGvRPBNP7uHIhjfeG8InuqWQZjLkumU5MVKz2mAujw
> 
> a=crypto:6 AES_256_CM_HMAC_SHA1_32 
> inline:V+K2bK8Zahr9KX7zswVwM2cpZ+/g8hMD4a5PmJzncH8WgDnCH/xLH0CFRwYKgg
> 
> a=crypto:7 F8_128_HMAC_SHA1_80 
> inline:Z00dhmeQwuttjeRawylGKannT7KbBZhDExDxETNo
> 
> a=crypto:8 F8_128_HMAC_SHA1_32 
> inline:R5Vqt9WQ1wU76GcS7CvDosgbWHRYLV7CRnGre+uV
> 
> a=crypto:9 NULL_HMAC_SHA1_80 inline:TP2aKDSKe8G9E7kd+w7XpOhcItzd0xmBN3g06WC1
> 
> a=crypto:10 NULL_HMAC_SHA1_32 
> inline:xKFUEuwLpexe84KKCulBSThMx75T74U7/K7qJbKi
> 
> a=setup:actpass
> 
> 
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