[Devel] High availability Openser proof of concept

lariny guy guylariny at yahoo.ca
Wed Jun 20 12:15:38 CEST 2007

   I have to do a saforum proof of concept for openser like the proof of concept made to asterisk (http://www.networksystemsdesignline.com/showArticle.jhtml?articleID=199204005). It consists to make openser highly available with the saforum specifications. 
   so can you tell me where the openser call state is saved. I have to replicate this state on two nodes, one standby and the other active for high availabilty purposes. I have to replicate the OK response to INVITE and the BYE request. In case of crash, an other server come up and continue the transaction at OK or INVITE.
    For example, In the Asterisk SIP module, the call-state information is saved in the handle_response() function as part of the INVITE and BYE processing. The the channel control blocks (struct ast_channel, struct ast_channel_pvt) and the SIP private control block (struct sip_pvt).
    For the case of openser, i don't know where the state call is saved!
   Please take a look for the article below in order to understand my problem:
   Which modules are concerned?
    Thank you in advance
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