On Fri, 2010-03-05 at 18:00 -0500, Dale Worley wrote:
> When you construct a SipSubscribeServer, you need to provide it with
> certain subordinate objects that carry out some of its processing:
> SipUserAgent, SipPublishContentMgr, SipSubscriptionMgr, and
> SipSubscibeServerEventHandler.
> 
> For each event type that you want the Subscribe Server to process, you
> have to call SipSubscribeServer::enableEventType.  Within that call, you
> can provide alternative subordinate objects for use when processing the
> specified event type.
> 
> This latter facility is used by no code in sipXecs.  In addition, it is
> problematic to implement, because at various points in processing
> subscriptions, it is difficult for the code to know the event type
> involved, so it must search through all the enabled event types
> attempting to find the object that handles the subscription in question.
> There are also design problems, in that the
> SipSubscribeServerEventHandler's getKeys() method extracts the "real"
> event type from the Event header field in an incoming SUBSCRIBE (usually
> by deleting irrelevant event parameters), but finding the correct
> SipSubscribeServerEventHandler requires (in principle) determining the
> "real" event type.
> 
> I am proposing to simplify this mess by deleting from
> SipSubscribeServer::enableEventType() the ability to specify different
> subordinate objects for different event types.  (And as I said, no code
> uses this facility.)

If it's an elaborate mechanism that's not in use, and removing it would
help you solve a current problem, cut away.


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