[OpenSIPS-Users] Users Digest, Vol 131, Issue 82

[Yuri Ritvin]

You may try this:
https://www.opensips.org/Documentation/Script-Tran-2-4#ip.resolve


On Fri, Jun 28, 2019 at 12:00 PM <users-request at lists.opensips.org> wrote:

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>    1. Re: Feature request - pseudo-variable for destination IP
>       address (Ben Newlin)
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>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 28 Jun 2019 15:38:01 +0000
> From: Ben Newlin <Ben.Newlin at genesys.com>
> To: OpenSIPS users mailling list <users at lists.opensips.org>
> Subject: Re: [OpenSIPS-Users] Feature request - pseudo-variable for
>         destination IP address
> Message-ID: <9D325F82-E29F-4E7A-98F7-40E229D7486E at genesys.com>
> Content-Type: text/plain; charset=UTF-8
>
> As far as I know, the equivalent variable to $si on the destination side
> is either $dd, which may not always be set, or $rd. Those are not
> guaranteed to be IP addresses, however. If DNS is being used, I don't
> believe OpenSIPS provides the results of the DNS lookup to the script in
> any variable, so I don't think there is a way to find the actual IP aside
> from doing your own DNS lookup (or possibly using the dns_cache module and
> snooping the cache, but I have had issues with this module in the past.)
>
> Ben Newlin
>
> On 6/28/19, 10:16 AM, "Users on behalf of rob.dyck at telus.net" <
> users-bounces at lists.opensips.org on behalf of rob.dyck at telus.net> wrote:
>
>     Unfortunately the address of the interface where the request was
> receeived is private. I am using 1 to 1 NAT.
>
>     ----- Original Message -----
>     From: "Ovidiu Sas" <osas at voipembedded.com>
>     To: "OpenSIPS users mailling list" <users at lists.opensips.org>
>     Sent: Thursday, June 27, 2019 3:31:34 PM
>     Subject: Re: [OpenSIPS-Users] Feature request - pseudo-variable for
> destination IP address
>
>     Check out the $Ri pvar:
>     https://www.opensips.org/Documentation/Script-CoreVar-3-0#toc78
>
>     -ovidiu
>
>     On Thu, Jun 27, 2019 at 6:23 PM rob.dyck at telus.net <rob.dyck at telus.net>
> wrote:
>     >
>     > I was looking for something similar to the $si PV but for the
> destination IP address. Either it doesn't exist or I am blind. I can't find
> things in the refrigerator either.
>     >
>     > The motivation.
>     >
>     > I have a working instance of Opensips with a basic residential
> configuration. I extended it to allow calling UAs on the LAN from the
> outside. It is a typical residential LAN without a fixed IP address.
> Dynamic DNS is working for me. I read the tutorial about Opensips behind
> NAT. Following the recommendations there I was able to setup rtpproxy, the
> advertised address and an alias for my Opensips. Initial testing using a
> softphone on a laptop using either WiFi or a mobile phone tethered to the
> laptop worked well. However it seems that some UAs will not accept a domain
> name in the SDP connection. The UAs that failed could be made to work by
> coding in an IP address. This is not a satisfactory solution because the
> router's address may chaange. There is probably some convoluted way to
> import the needed address into the script.  A pseudo-variable representing
> the destination IP address of the received INVITE or 200 OK could then be
> passed as the advertised address to the rtpproxy module.
>     >
>     > Thank you for having a look.
>     > Rob
>     >
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>
>     --
>     VoIP Embedded, Inc.
>     http://www.voipembedded.com
>
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> End of Users Digest, Vol 131, Issue 82
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