Subject: [Simple] Event Filtering Issue 1: Multiple filters for a resource

From: [email-masked]
Date: Mon, 31 May 2004 13:57:08 +0300

A SUBSCRIBE request is allowed to carry multiple filters (eg: If the subscribe is for a list). The problem when multiple filters are destined to the same resource.

SUBSCRIBE sip:[email-masked] SIP/2.0
...
 <?xml version="1.0" encoding="UTF-8"?>
      <filter-set xmlns="urn:ietf:params:xml:ns:simple-filter"
                         xmlns:pidf="urn:ietf:params:xml:ns:pidf">
            <filter id="8439" uri="sip:[email-masked]">
               <what>
       	     <include>//pidf:tuple/pidf:status/pidf:basic</include>
   		</what>
            </filter>
            <filter id="999" uri="sip:[email-masked]">
               <what>
       	    <include type="namespace">urn:ietf:params:xml:ns:pidf</include>
       	    <exclude>//pidf:tuple/pidf:note</exclude>
   		</what>
            </filter>
      </filter-set>

We agreed at the interim that we need to add text that disallows more than 1 filter per resource to be specified.

Any objections?

Regards,
Hisham

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