[asterisk-dev] Issue of DTLS setup issue in some webrtc calls

[Abhay Gupta]

As I have checked the state remains in “before/accept initialisation” . For the time being I have hangup the call with such a issue , will wait for the fragmentation issue resolution and will test the same after such resolution .

Regards,

> On 12-Jun-2019, at 7:35 PM, Abhay Gupta <abhay at avissol.com> wrote:
> 
> Ok seems that in that particular case of ASTERISK-28018 all calls to a ISP fails but in my case only 1-2% calls get this issue and in that case garbage is recorded in asterisk mix monitor and chrome shows Failed to unprotect RTP packet and this is similar to ASTERISK-27826
> 
> I also understand that before/accept initialization is a intermediate signalling state so I will try on test setup with a for loop of 5 times with 1 microsecond sleep and see if the state changes .
> 
> Regards
> 
>> On 12-Jun-2019, at 6:54 PM, Joshua C. Colp <jcolp at digium.com> wrote:
>> 
>> On Wed, Jun 12, 2019, at 10:17 AM, Abhay Gupta wrote:
>>> I was looking at the bug ASTERISK-27826 and found that in file 
>>> res_rtp_asterisk.c and function __rtp_recvfrom in call with the issue 
>>> ssl state is  "before/accept initialization" and in successful cases 
>>> the state is "SSL negotiation finished successfully" 
>>> 
>>> The function is called twice in block "if ((*in >= 20) && (*in <= 63))" 
>>> wherein first instance the state is unknown and then if negotiation is 
>>> successful the call is fine and if it remains in before/accept 
>>> initialisation the same is never called again and results in no voice .
>>> 
>>> How can we ensure that SSL negotiation is successful in all cases . 
>> 
>> A quick glance shows the problem may be fragmentation related, at least for the original user. I'm actively working on such a thing and it is being tracked on another issue[1]. For your specific case it may or may not be the same.
>> 
>> [1] https://issues.asterisk.org/jira/browse/ASTERISK-28018
>> 
>> -- 
>> Joshua C. Colp
>> Digium - A Sangoma Company | Senior Software Developer
>> 445 Jan Davis Drive NW - Huntsville, AL 35806 - US
>> Check us out at: www.digium.com & www.asterisk.org
>> 
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