22 Dec
2024
22 Dec
'24
12:38 p.m.
On 22 Dec 2024, at 16:45, Alex Balashov via sr-users
<sr-users(a)lists.kamailio.org> wrote:
Although I admire Nick's work, and his gift for making complex concepts accessible to
a lay audience--I've learned quite a bit from his posts myself--some of the
misinformation and simplification in this one is unforgivable, e.g.
"A Transaction Stateful proxy stores state from the initial INVITE until a 200 OK
is
received. As soon as the session is setup it forgets everything. This means we won’t
have any state information when the BYE is eventually received."
This is radioactively wrong.
Apart from missing the ACK, what do you think is wrong with this?
/O
-- Alex
On Dec 22, 2024, at 10:03 am, Alexis Fidalgo via
sr-users <sr-users(a)lists.kamailio.org> wrote:
Yes i did, concept is clear, what is not clear (to me) is why in a transaction, if i
reply a 302, it’s retransmitted 3 times until the transaction is released.
--
Alex Balashov
Principal Consultant
Evariste Systems LLC
Web: https://evaristesys.com
Tel: +1-706-510-6800
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On 21 Dec 2024, at 8:35 PM, Sergio Charrua via
sr-users <sr-users(a)lists.kamailio.org> wrote:
You probably know this article, already, but Nick vs Networking has this nice
explanation:
Stateless, Stateful, Dialog Stateful and Transaction Stateful SIP Proxies | Nick vs
Networking
Atenciosamente / Kind Regards / Cordialement / Un saludo,
Sérgio Charrua
On Sat, Dec 21, 2024 at 5:31 PM Alexis Fidalgo via sr-users
<sr-users(a)lists.kamailio.org> wrote:
Hello, after the discussion regarding http and http_async, I started some labs to make a
comparison and see what’s the trade off and the associated cost.
Main problem (to me) is im not clear on how transactions behave. Im running some fast
tests now before I start to deploy the final scenarios and
1. A new transaction is created before the http_async call (as the module example shows
for http_async_query function
2. The http_async_query call is executed, receives a response and the HTTP_REPLY route
for http_async_query is executed.
3. As we need to redirect the call, im adding Contact information with append_to_reply
and then calling t_reply(302,”Redirect)
Up to here INVITE is received, a 100 is answered and then the 302 with the expected
Contact information (collected and built from the http_async_query response), problem is
that the 302 is retransmitted 3 more times.
So, im not even sure that im doing the correct actions to process the call this way. Is
there a document/book/reference I can read to understand transactions better?
By now I can not handle the call to be processed correctly (without the retransmissions)
and finish the transaction the correct way.
Any help, link, guide, will be appreciated.
Regards.
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