Hi all,

On receipt of a valid NOTIFY within an existing dialog and with the 
correct Content-Type, what should the subscriber's behavior be if the 
NOTIFY message content is invalid or malformed?  E.g. for the RFC 
3856-defined presence event package, what should a subscriber do if the 
incoming PIDF document is malformed?

After a scan through RFCs 3265 and 3856 I'm not seeing anything that 
directly addresses this point.  I'm hesitant to just kick back a 4xx 
response because that may cause the subscription to be torn down 
prematurely, and the bad XML may be a one-time thing.  See page 14 of RFC 
3265: "If the NOTIFY request fails (as defined above) due to an error 
response, and the subscription was installed using a soft-state mechanism, 
the notifier MUST remove the corresponding subscription."

Thoughts?

Thanks,
Rhys
_______________________________________
Rhys Ulerich
WebSphere IMS/SIP SOA Enablement Developer
Email: [EMAIL PROTECTED]  Office: 512-838-1428
IBM Software Group - Austin, TX
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