[Freeswitch-users] SIP Header Modification / Manipulation

Steven Ayre steveayre at gmail.com
Wed Dec 17 12:17:02 MSK 2014


If the INVITE comes from A then on answering the call the response to A
will be 200 OK, not another invite.

The To header in the 200 OK has to match the value in the INVITE, as
they're part of the same dialog. The rules of the SIP protocol mean needs
you to reply to A within the call using the values you were originally sent
in the original INVITE.

If you need to provide information back to A I suggest you look at the
sip_rh_ family of variables. They'll allow you to send extra headers (eg X-
headers) in the 200 OK.



On 16 December 2014 at 01:16, Ahmed Habiba <ahabiba at gmail.com> wrote:
>
> Thanks you really Michael.
>
> My point is as below:
> 1-when FS get Invite from A number the TO is as below:
> To: <sip:2020 at 71.233.135.12>
>
> 2-and when I run answer application, FS send invite to A number with TO as
> below:
> To: <sip:2020 at 71.233.135.12>
>
> 3-I want when I run answer application to edit the TO header and to add
> some prefix like 505 as below:
> To: <sip*:505*2020 at 71.233.135.12>
>
> is this possible, by editing sip header, and if so how can I do so?
>
> Your kind usual support will be appreciated.
>
>
> *From: *Michael Jerris <mike at jerris.com>
> *To: *FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
> *Date: *December 13, 2014 at 12:37:42 AM GMT+3
> *Reply-To: *FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
> *Subject: **Re: [Freeswitch-users] SIP Header Modification / Manipulation*
>
>
> if you are looking to update the display of the number that is being
> called on the caller phone, you want to be looking at display udpates, and
> callee_id_name and callee_id_number params.
>
> On Dec 12, 2014, at 2:39 PM, Ahmed Habiba <ahabiba at gmail.com> wrote:
>
> Dears,
>
> Kindly help me on how can I modify the SIP header in the re-invite in the
> below scenario:
>
>
> [A Number] <———>[FreeSWitch]<———>[B Number]
>
>
> 1-A Number Call B Number (Sip Invite sent from A number)
> 2-B number is not registered.
> 3-Call logic let FreeSwitch answer the call( Freeswitch send re-invite to
> A number)
>
> in the part number 3 I like to do modification on the SIP headers, by for
> example changing the From or To.
>
>
> Your help will be appreciated.
>
>
> _________________________________________________________________________
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>
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