[asterisk-users] PJSIP to Twilio over TLS - wildcard cert problem

Dan Jenkins dan at nimblea.pe
Thu Dec 2 10:50:35 CST 2021


As far as I'm aware Josh, it doesnt stop a call from happening - I've had
the same "errors" pop up when using Twilio and Simwood but calls continue
just fine.

On Thu, Dec 2, 2021 at 2:30 PM Joshua C. Colp <jcolp at sangoma.com> wrote:

> On Thu, Dec 2, 2021 at 10:18 AM James Cloos <cloos at jhcloos.com> wrote:
>
>> >>>>> "KT" == Kingsley Tart <kingsley at dns99.co.uk> writes:
>>
>> KT> I can't get Asterisk to send a SIP call to Twilio over TLS
>> KT> because it complains about Twilio's wildcard certificate.
>>
>> the sip rfc claims that wildcard certs should be invalid for sip.
>>
>> digium insisted on following that advise as set in stone, and so
>> asterisk refuses such certs.  i doubt that stance is different
>> under sangoma.
>>
>> the only workaround is to remind twil of the rfc and get them to
>> replace the wildcard with an rfc-copliant cert.  at least for the
>> sip ports.
>>
>
> To be specific, this is in PJSIP land. There was no insisting or anything
> and it wasn't a decision we originally made. It's the way that Teluu
> implemented the TLS transport in PJSIP and since we use PJSIP then it
> applies to us. If someone contributed a change to Asterisk to make it
> configurable in some way, then we'd certainly review it. At this point
> though noone has done such a thing.
>
> --
> Joshua C. Colp
> Asterisk Technical Lead
> Sangoma Technologies
> Check us out at www.sangoma.com and www.asterisk.org
> --
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