Klaus,
Thank you for this detailed explanation. This is essentially what I figured was happening. I was able to use htable to work around it.
I guess however I am still confused as to where there is any public documentation on this specific bit. Had I've not been working with Kamailio for years I would think this would confuse others.
Let me know if it is somewhere else, otherwise I will add it to the Kamailio wiki.
Sincerely, Brandon Armstead
On Tue, Aug 7, 2012 at 2:32 AM, Klaus Darilion <klaus.mailinglists@pernau.at
wrote:
AVPs are associated with the transaction. If you "spiral" a request through the same proxy, then for the proxy it is a new transaction. Thus, when processing the request a second time, there is a new transaction and you do not have access to the AVPs of the previous transaction.
Workarounds are:
- store data in SIP headers and retrieve it later (ugly)
- use htable module to store data during transaction 1 and retrieve it
during transaction 2. Therefore you need a known "key" which is identical in this 2 transactions only (e.g. use "$ci$ft" as base for the key).
regards Klaus
On 07.08.2012 00:27, Brandon Armstead wrote:
Hello,
I am curious if there is any documentation on how AVP's processingworks in the following scenario below.
UAC 1 -> KAMAILIO -> KAMAILIO -> DEST
It seems that AVP's I set between UAC 1 -> KAMAILIO are lost once I relay back to the same KAMAILIO proxy (self)?
Is there any documentation on why or when this would occur?
Is there a better way to handle such a scenario? i.e. more dynamic internal routing, vs relaying to self.
Thanks as always in advance!
Sincerely, Brandon Armstead
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