[SR-Users] limit the length of Via branch parameter

[Henning Westerholt]

Hello Patrick,

then you probably need to change the code of Kamailio.

The length of the Via branch parameter is not restricted in RFC 3261. The relevant section only states:

https://www.rfc-editor.org/rfc/rfc3261#section-8.1.1.7

   The branch parameter value MUST be unique across space and time for
   all requests sent by the UA. [..]
   The branch ID inserted by an element compliant with this
   specification MUST always begin with the characters "z9hG4bK".  [..]
   Beyond this requirement,
   the precise format of the branch token is implementation-defined.

Cheers,

Henning

--
Henning Westerholt - https://skalatan.de/blog/
Kamailio services - https://gilawa.com<https://gilawa.com/>

From: Patrick Karton <patrickarton at hotmail.com>
Sent: Tuesday, March 15, 2022 1:40 AM
To: Henning Westerholt <hw at gilawa.com>; Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
Subject: RE: limit the length of Via branch parameter

hello ,
he one that is generated from Kamailio
________________________________
De : Henning Westerholt <hw at gilawa.com<mailto:hw at gilawa.com>>
Envoyé : lundi 14 mars 2022 11:39
À : Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org<mailto:sr-users at lists.kamailio.org>>
Cc : Patrick Karton <patrickarton at hotmail.com<mailto:patrickarton at hotmail.com>>
Objet : RE: limit the length of Via branch parameter


Hello,



not sure why one wants to do this, but anyway - do you mean the value that is processed from Kamailio, or the one that is generated from Kamailio?



Cheers,



Henning



--

Henning Westerholt - https://skalatan.de/blog/

Kamailio services - https://gilawa.com<https://gilawa.com/>



From: sr-users <sr-users-bounces at lists.kamailio.org<mailto:sr-users-bounces at lists.kamailio.org>> On Behalf Of Patrick Karton
Sent: Sunday, March 13, 2022 10:44 AM
To: sr-users at lists.kamailio.org<mailto:sr-users at lists.kamailio.org>
Subject: [SR-Users] limit the length of Via branch parameter



Hello,



i would like to know if there is a way or option to limit the length of the value of branch parameter in Via header ?



Thanks.
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