2007-01-25
- OpenSER 1.2.0 has now the capability to do DNS based failover, according to RFC3263 ...

OpenSER development version can do failover based on DNS response. From the announcement: 

" The SIP resolver was enhanced to to be able to save and resume later the DNS queries in order to get all possible IP destinations. The resolving process is step-by-step done (get next IP only on demand) to minimize the total number of DNS queries. So having this support does not imply, in normal processing, more load on the DNS server. Additional queries are done only when needed (after failure detected).

The scanning for new IP destinations is done by the SIP resolver on all DNS levels: NAPTR, SRV, A.

Both core and TM are using this new feature. "

See full announcement:

http://openser.org/pipermail/users/2007-January/008803.html