I don't know in that specific output what happened. Your best course of
action is to add further logging or step through the logic with all of the
knowledge you have of the RTP streams to understand what is happening.
On Mon, Apr 17, 2023 at 8:52 PM David Cunningham
wrote:
> Hi Joshua,
>
> Thank you for that. From the code it kind of looks like
> STRICT_RTP_LEARN_TIMEOUT is a minimum, not a maximum:
>
> if (!ast_sockaddr_isnull(>strict_rtp_address)
> && STRICT_RTP_LEARN_TIMEOUT < ast_tvdiff_ms(ast_tvnow(),
> rtp->rtp_source_learn.start)) {
> ast_verb(4, "%p -- Strict RTP learning complete - Locking on source
> address %s\n",
>
> Our call shows:
>
> # grep C-00024cd5 full.log | egrep 'Strict RTP'
> [Feb 22 11:16:41] VERBOSE[29023][C-00024cd5] res_rtp_asterisk.c:>
> 0x2b308c074f80 -- Strict RTP learning after remote address set to:
> xx.xx.154.111:18578
> [Feb 22 11:17:00] VERBOSE[29023][C-00024cd5] res_rtp_asterisk.c:>
> 0x2b315c01cbc0 -- Strict RTP learning after remote address set to:
> xx.xx.0.12:16498
> [Feb 22 11:17:00] VERBOSE[28191][C-00024cd5] res_rtp_asterisk.c:>
> 0x2b308c074f80 -- Strict RTP switching to RTP remote address
> xx.xx.154.111:18578 as source
> [Feb 22 11:17:00] VERBOSE[28191][C-00024cd5] res_rtp_asterisk.c:>
> 0x2b308c074f80 -- Strict RTP learning complete - Locking on source address
> xx.xx.154.111:18578
> [Feb 22 11:17:00] VERBOSE[28194][C-00024cd5] res_rtp_asterisk.c:>
> 0x2b315c01cbc0 -- Strict RTP switching source address to xx.xx.114.237:16498
> [Feb 22 11:17:01] VERBOSE[28194][C-00024cd5] res_rtp_asterisk.c:>
> 0x2b315c01cbc0 -- Strict RTP learning complete - Locking on source address
> xx.xx.114.237:16498
>
> I'm a bit confused because the second "Strict RTP learning after remote
> address set" should reset the rtp_source_learn.start timestamp, and yet the
> "Strict RTP learning complete" messages are less than 5000ms after that.
> What could be happening?
>
> Thanks again.
>
>
> On Tue, 18 Apr 2023 at 10:40, Joshua C. Colp wrote:
>
>> It's probably best if you read the logic[1]. There's an entire comment
>> that talks about how it works.
>>
>> [1]
>> https://github.com/asterisk/asterisk/blob/20/res/res_rtp_asterisk.c#L8158
>>
>> On Mon, Apr 17, 2023 at 7:10 PM David Cunningham <
>> dcunning...@voisonics.com> wrote:
>>
>>> Hi Joshua,
>>>
>>> Could you confirm if the 5 second period for learning a new audio stream
>>> is a minimum or a maximum? The unusual call flow in question results in
>>> Asterisk learning a new audio stream when we don't want it to, and having a
>>> minimum of say 2 seconds of audio would help avoid this.
>>>
>>> Thank you!
>>>
>>>
>>> On Thu, 2 Mar 2023 at 12:32, Joshua C. Colp wrote:
>>>
On Tue, Feb 28, 2023 at 9:51 AM Joshua C. Colp
wrote:
> On Tue, Feb 28, 2023 at 9:50 AM David Cunningham <
> dcunning...@voisonics.com> wrote:
>
>> Hello,
>>
>> Does anyone know if one of the "strictrtp" options disables RTP
>> learning? As far as I can tell from the documentation the values "no" and
>> "seqno" are more permissive in allowing other sources rather than less,
>> but
>> I thought I'd check.
>>
>
> Setting it to "no" disables the learning.
>
Since I haven't gotten the email yet I'll just reply to my own.
The "no" option disables strict RTP protection. Learning is part of
strict RTP protection, it is what determines what the source of media is
and then blocks other packets. There is no ability to set it
per-peer/per-endpoint.
--
Joshua C. Colp
Asterisk Project Lead
Sangoma Technologies
Check us out at www.sangoma.com and www.asterisk.org
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>>>
>>>
>>>
>>> --
>>> David Cunningham, Voisonics Limited
>>> http://voisonics.com/
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>>
>>
>>
>> --
>> Joshua C. Colp
>> Asterisk Project Lead
>> Sangoma Technologies
>> Check us out at
