[Users] Duplicate INVITEs

[Mahesh Paolini-Subramanya]

Well, thats exactly what I thought.
What I see, however, is the following -

When t_relay receives the retransmission, it complains about the transaction already being in process
(ERROR: t_newtran: transaction already in process 0xb672c4e8
)
and returns a negative value
I then proceed to send an sl_reply_error upstream (which is causing the issues)

So, is there something I am missing?  Maybe a flag i'm unaware of that says 'absorb retransmissions' or some such thing (he enquires hopefully)

cheers


----- Original Message -----
From: Klaus Darilion <klaus.mailinglists at pernau.at>
To: mahesh at aptela.com
Cc: users <users at openser.org>
Sent: Thursday, December 14, 2006 2:06:01 AM GMT-0600
Subject: Re: [Users] Duplicate INVITEs

Mahesh Paolini-Subramanya wrote:
> We're seeing sporadic situations where fones 
> a) send an INVITE 
> b) ignore the 100-Trying response, and instead 
> c) send another INVITE with the same sequence number. 
> 
> The question is, What should happen here? 

If the message is completely identical then it is a retransmission. 
Retransmissions should be detected by tm module (e.g. t_relay()) and 
absorbed,

regards
klaus


> Currently, we send back a 500 response (server error). 
> Is this correct? (i think not, cause it invariably causes the fone to go fast busy). 
> Is this some other response that should occur? 
> 
> poring over 3261 resulted in a headache, and no additional clarity... 
> 
> 
> 
> 
> 
> 
> 
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> 
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-- 
Klaus Darilion
nic.at



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