[OpenSIPS-Users] Error on 487 Cancel - no 'to' tag

[Bogdan-Andrei Iancu]

Yeah, just ignore it, anyhow there is nothing we can do about it.

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   https://www.opensips-solutions.com
OpenSIPS Summit 2019
   https://www.opensips.org/events/Summit-2019Amsterdam/

On 05/22/2019 12:39 PM, Yury Kirsanov wrote:
> Hi Bogdan,
> Nice to hear from you again, you are always very helpful :)
> Unfortunately, I doubt that Microsoft would listen to my request, 
> they're bending RFCs the way they like it, for example - using FQDN in 
> 'Contact' field and no 'to' tag in this 487 reply. I assume it's quite 
> safe to ignore this behaviour? Thanks!
>
> Regards,
> Yury.
>
> ср, 22 мая 2019 г. в 18:37, Bogdan-Andrei Iancu <bogdan at opensips.org 
> <mailto:bogdan at opensips.org>>:
>
>     Hi Yury,
>
>     No need to call any script function - all you need to do is to
>     point your carrier to read the RFC3261 -> any final SIP reply MUST
>     have a TO-tag.
>
>     Regards,
>
>     Bogdan-Andrei Iancu
>
>     OpenSIPS Founder and Developer
>        https://www.opensips-solutions.com
>     OpenSIPS Summit 2019
>        https://www.opensips.org/events/Summit-2019Amsterdam/
>
>     On 05/22/2019 11:19 AM, Yury Kirsanov wrote:
>>     Hi,
>>     My upstream carrier is replying back to CANCEL request with a 487
>>     Call Cancelled message that doesn't have a 'to' tag in its
>>     headers. So, I'm getting these errors in OpenSIPS logs:
>>
>>     ERROR:dialog:push_reply_in_dialog: [487] reply in dlg state [2]:
>>     missing TAG param in TO hdr
>>
>>     But dialogs are closing correctly on BYE and I don't see any
>>     dialogs hanging in any state when the call is finished. Is it
>>     something I should be worried about or can I just ignore this
>>     error? Is there any way to avoid it by OpenSIPS script processing
>>     logic? Maybe I need to call some function to fix this dialog? Thanks!
>>
>>     Regards,
>>     Yury.
>>
>>
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