[SIPForum-discussion] rfc 3263 question

[Manpreet Singh]

Hi
 
The spec says SRV is done max once per transaction. But for each
transaction, its allowed to do SRV lookups. So if a ProxyA sends the
initial invite to proxyB running in cluster with proxy C( B&C are in
load share mode and no call state is shared ), the
BYE/Re-invite/mid-dialog requests sent from Proxy A can actually land up
in Proxy C ( assuming domain for proxy B/C are record routed )? Now for
a transaction RFC mandates the same server be contacted for all retries
but how to handle other same dialog requests? Like Session timer
re-invite may end up in a different downstream proxy thereby killing the
call as there is no call state there? how are mid dialog requests
handled using DNS? 
 
thnx
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20080307/b43d4bd7/attachment-0002.html>