[giow] (1) clarify the precise way an eventsource garbage collection …

…affects the underlying connections

git-svn-id: http://svn.whatwg.org/webapps@6202 340c8d12-0b0e-0410-8428-c7bf67bfef74

complete.html

@@ -78999,7 +78999,17 @@ <h4 id=garbage-collection-1><span class=secno>11.2.8 </span>Garbage collection</
   invoked from to the <code><a href=#eventsource>EventSource</a></code> object itself.</p>
 
   <p>If an <code><a href=#eventsource>EventSource</a></code> object is garbage collected while
-  its connection is still open, the connection must be closed.</p>
+  its connection is still open, the user agent must cancel any
+  instance of the <a href=#fetch title=fetch>fetch</a> algorithm opened by
+  this <code><a href=#eventsource>EventSource</a></code>, discarding any <a href=#concept-task title=concept-task>tasks</a> <a href=#queue-a-task title="queue a
+  task">queued</a> for them, and discarding any further data
+  received from the network for them.</p>
+
+  <p class=note>It's possible for one active network connection to
+  be shared by multiple <code><a href=#eventsource>EventSource</a></code> objects and their
+  <a href=#fetch>fetch</a> algorithms, which is why the above is phrased in
+  terms of canceling the <a href=#fetch>fetch</a> algorithm and not the
+  actual underlying download.</p>
 
 
   <h4 id=iana-considerations><span class=secno>11.2.9 </span>IANA considerations</h4>

source

@@ -89682,7 +89682,18 @@ data:&nbsp;test</pre>
   invoked from to the <code>EventSource</code> object itself.</p>
 
   <p>If an <code>EventSource</code> object is garbage collected while
-  its connection is still open, the connection must be closed.</p>
+  its connection is still open, the user agent must cancel any
+  instance of the <span title="fetch">fetch</span> algorithm opened by
+  this <code>EventSource</code>, discarding any <span
+  title="concept-task">tasks</span> <span title="queue a
+  task">queued</span> for them, and discarding any further data
+  received from the network for them.</p>
+
+  <p class="note">It's possible for one active network connection to
+  be shared by multiple <code>EventSource</code> objects and their
+  <span>fetch</span> algorithms, which is why the above is phrased in
+  terms of canceling the <span>fetch</span> algorithm and not the
+  actual underlying download.</p>
 
 
   <h4>IANA considerations</h4>