[Freeswitch-users] Unset variable in dialstring

Markus Bönke mbodbg at gmx.net
Wed Feb 5 09:52:09 UTC 2020


I made a couple of more tests and found out that it depends on the cid_type. 
So if the sip_cid_type is set to rpid (or not set as the default is rpid) 
then the deletion of the Privacy header works:


EXECUTE [depth=0] sofia/internal/+4999999999999 at 192.168.12.13 bridge({sip_cid_type=rpid,_nolocal_sip_h_Privacy=}sofia/gateway/asterisk/+4933333333332)

INVITE sip:+4933333333332 at 192.168.12.18 SIP/2.0
Via: SIP/2.0/UDP 192.168.12.2;rport;branch=z9hG4bK55vN1XK3UZNHQ
Max-Forwards: 69
From: "+4999999999999" <sip:+4999999999999 at 192.168.12.2>;tag=Fyr8m981N4Dea
To: <sip:+4933333333332 at 192.168.12.18>
Call-ID: 0f549364-c29d-1238-6baf-001c42a16581
CSeq: 15893737 INVITE
Contact: <sip:gw+asterisk at 192.168.12.2:5060;transport=udp;gw=asterisk>
User-Agent: FreeSWITCH-mod_sofia/1.10.2-release-13-f7bdd3845a~64bit
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY
Supported: timer, path, replaces
Allow-Events: talk, hold, conference, refer
Content-Type: application/sdp
Content-Disposition: session
Content-Length: 220
Remote-Party-ID: "+4999999999999" <sip:+4999999999999 at 192.168.12.2>;party=calling;screen=yes;privacy=off


but when the cid_type is set to pid, setting "_nolocal_sip_h_Privacy=" has no effect, the Privacy header is kept.

EXECUTE [depth=0] sofia/internal/+4999999999999 at 192.168.12.13 bridge({sip_cid_type=pid,_nolocal_sip_h_Privacy=}sofia/gateway/asterisk/+4933333333332)


INVITE sip:+4933333333332 at 192.168.12.18 SIP/2.0
Via: SIP/2.0/UDP 192.168.12.2;rport;branch=z9hG4bK2aHBvc1r44jSm
Max-Forwards: 69
From: "+4999999999999" <sip:+4999999999999 at 192.168.12.2>;tag=Dc6pHK7tUj18j
To: <sip:+4933333333332 at 192.168.12.18>
Call-ID: c34ec1cd-c29c-1238-6baf-001c42a16581
CSeq: 15893673 INVITE
Contact: <sip:gw+asterisk at 192.168.12.2:5060;transport=udp;gw=asterisk>
User-Agent: FreeSWITCH-mod_sofia/1.10.2-release-13-f7bdd3845a~64bit
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY
Supported: timer, path, replaces
Allow-Events: talk, hold, conference, refer
Privacy: none
Content-Type: application/sdp
Content-Disposition: session
Content-Length: 220
P-Asserted-Identity: "+4999999999999" <sip:+4999999999999 at 192.168.12.2>


Is this by design or a bug?

Thanks

Markus

> Am 05.02.2020 um 07:15 schrieb Markus Bönke <mbodbg at gmx.net>:
> 
> Perfect, that works! 
> 
> Thank you
> 
> Markus
>> Am 04.02.2020 um 23:20 schrieb Vallimamod Abdullah <vma at vallimamod.org>:
>> 
>> Hi,
>> 
>> For sip headers you need to set an empty value to remove them: {sip_h_Privacy=} 
>> 
>> or before the bridge: 
>> 
>> <action application="export" data="_nolocal_sip_h_Privacy="/> 
>> 
>> the "_nolocal_" (or "nolocal:") prefix tells freeswitch to set the var only on b-leg.
>> 
>> Hope this helps.
>> 
>> 
>> 
>> Best Regards,
>> -- 
>> Vallimamod Abdullah
>> SIP Solutions
>> vma at sip.solutions
>> linkedin.com/in/vallimamod
>> .
>> 
>> 
>>> On 4 Feb 2020, at 20:44, Markus Bönke <mbodbg at gmx.net> wrote:
>>> 
>>> Unfortunately I doesn’t work. I tried:
>>> 
>>> <action application="bridge" data="{sip_h_Privacy=_undef_}sofia/gateway/asterisk/+4933333333332" />
>>> 
>>> and see 
>>> 
>>> Privacy: _undef_
>>> 
>>> In the sip INVITE message.
>>> 
>>> Thanks 
>>> 
>>> Markus 
>>> 
>>>> Am 03.02.2020 um 16:48 schrieb Vallimamod Abdullah <vma at vallimamod.org>:
>>>> 
>>>> Hi,
>>>> 
>>>> You can try with _undef_, it works in dialplan as <action application="set" data="variable=_undef_"/>
>>>> 
>>>> 
>>>> Best Regards,
>>>> -- 
>>>> Vallimamod Abdullah
>>>> SIP Solutions
>>>> vma at sip.solutions
>>>> linkedin.com/in/vallimamod
>>>> .
>>>> 
>>>> 
>>>>> On 3 Feb 2020, at 16:07, Markus Bönke <mbodbg at gmx.net> wrote:
>>>>> 
>>>>> Hello NG,
>>>>> 
>>>>> I know it is possible to unset a variable in the dial plan by using the „unset“ application like:
>>>>> 
>>>>> <application="unset" data="variable_name“>
>>>>> 
>>>>> But is it also possible to unset a variable within a bridge command like:
>>>>> 
>>>>> bridge({variable_name="_unset_"}sofia/gateway/mygateway/+49123456789) 
>>>>> 
>>>>> _unset_ does not work with FS 1.10.2 but maybe there is any other „special value“ to unset? 
>>>>> 
>>>>> Thanks and regards
>>>>> 
>>>>> Markus
>>>>> 
>>>>> 
>>>>> 
>>>>> _________________________________________________________________________
>>>>> 
>>>>> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
>>>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
>>>>> Build your next product on our scalable cloud platform.
>>>>> 
>>>>> Join our online community to chat in real time https://signalwire.community
>>>>> 
>>>>> Professional FreeSWITCH Services
>>>>> sales at freeswitch.com
>>>>> https://freeswitch.com
>>>>> 
>>>>> Official FreeSWITCH Sites
>>>>> https://freeswitch.com/oss
>>>>> https://freeswitch.org/confluence
>>>>> https://cluecon.com
>>>>> 
>>>>> FreeSWITCH-users mailing list
>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>> https://freeswitch.com
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> _________________________________________________________________________
>>>> 
>>>> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
>>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
>>>> Build your next product on our scalable cloud platform.
>>>> 
>>>> Join our online community to chat in real time https://signalwire.community
>>>> 
>>>> Professional FreeSWITCH Services
>>>> sales at freeswitch.com
>>>> https://freeswitch.com
>>>> 
>>>> Official FreeSWITCH Sites
>>>> https://freeswitch.com/oss
>>>> https://freeswitch.org/confluence
>>>> https://cluecon.com
>>>> 
>>>> FreeSWITCH-users mailing list
>>>> FreeSWITCH-users at lists.freeswitch.org
>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>> https://freeswitch.com
>>> 
>>> _________________________________________________________________________
>>> 
>>> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
>>> Build your next product on our scalable cloud platform.
>>> 
>>> Join our online community to chat in real time https://signalwire.community
>>> 
>>> Professional FreeSWITCH Services
>>> sales at freeswitch.com
>>> https://freeswitch.com
>>> 
>>> Official FreeSWITCH Sites
>>> https://freeswitch.com/oss
>>> https://freeswitch.org/confluence
>>> https://cluecon.com
>>> 
>>> FreeSWITCH-users mailing list
>>> FreeSWITCH-users at lists.freeswitch.org
>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>>> https://freeswitch.com
>> 
>> 
>> _________________________________________________________________________
>> 
>> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
>> Build your next product on our scalable cloud platform.
>> 
>> Join our online community to chat in real time https://signalwire.community
>> 
>> Professional FreeSWITCH Services
>> sales at freeswitch.com
>> https://freeswitch.com
>> 
>> Official FreeSWITCH Sites
>> https://freeswitch.com/oss
>> https://freeswitch.org/confluence
>> https://cluecon.com
>> 
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> https://freeswitch.com
> 
> 
> _________________________________________________________________________
> 
> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
> Build your next product on our scalable cloud platform.
> 
> Join our online community to chat in real time https://signalwire.community
> 
> Professional FreeSWITCH Services
> sales at freeswitch.com
> https://freeswitch.com
> 
> Official FreeSWITCH Sites
> https://freeswitch.com/oss
> https://freeswitch.org/confluence
> https://cluecon.com
> 
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> https://freeswitch.com




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