[Freeswitch-users] Reading custom SIP headers

[ik]

On Thu, Apr 10, 2014 at 10:45 AM, Dahlberg, David <
david.dahlberg at fkie.fraunhofer.de> wrote:

> Am Mittwoch, den 09.04.2014, 18:42 -0500 schrieb Brian West:
>
> > It it does then we need an NDLB flag (for those not in the know NDLB is
> No Device Left Behind)
>
> Sorry, considering that /any/ header that are not recognised by a
> particular software solution and that does not begin with "X-" or
> "P-" to be of any use is what IMHO requires a NDLB flag.
>
> X-Headers are a RFC 822 (from 1982!) legacy. By now, considering only
> "X-" headers as potentially meaningful would require FS to implement
> /every possible/ standardized extension to the SIP RFCs, which is
> virtually impossible today. E.g. I am quite certain, that you do /not/
> implement RFC 4412 ("Resource-Priority") nor was FS able to support a
> custom extension with the necessary data do process it.
>
> For that reason (or more for the problem of migrating a "well known"
> X-Header to a "standards" header) the IETF finally deprecated the usage
> of "X-" and "P-" prefixes in RFC 6648/BCP 178 and RFC 5727/BCP 67.
>
> Until recently one could write but not read non-X-, non-P- and not known
> headers. Fortunately, now there seems to be a patch (FS-6075) in HEAD,
> which allows the parsing of arbitrary headers at least for SIP invites.
> So please have a look at the most recent git version of FS, Ido.
>

I have found that RFC as well (that;s why I haven't talked first with the
provider), but now I have talked with the provider, and they "fixed" it for
me:

707649a6-3901-472c-9962-7008fa068289 variable_sip_h_X-Gateway: [10]
707649a6-3901-472c-9962-7008fa068289 variable_sip_h_X-Price: [0.5]


>
>
> Cheers,
>         David
>

Thank you :)

Ido


>
> --
> David Dahlberg
>
> Fraunhofer FKIE, Dept. Communication Systems (KOM) | Tel: +49-228-9435-845
> Fraunhoferstr. 20, 53343 Wachtberg, Germany        | Fax: +49-228-856277
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