formally added SDP disco feature

git-svn-id: file:///home/ksmith/gitmigration/svn/xmpp/trunk@1909 4b5297f7-1745-476d-ba37-a9c6900126ab

xep-0176.xml

@@ -900,6 +900,17 @@ INITIATOR                  NAT                  RESPONDER
       <li>urn:xmpp:jingle:transport:ice-udp</li>
     </ul>
   </section2>
+  <section2 topic='Service Discovery Features' anchor='registrar-features'>
+    <p>If an entity supports the SDP offer / answer model described in <cite>RFC 3264</cite> and therefore prefers to receive one "transport-info" action with multiple candidates, it MUST advertise support for the "urn:ietf:rfc:3264" feature.</p>
+    <p>The registry submission is as follows.</p>
+    <code caption='Registry Submission'><![CDATA[
+<var>
+  <name>urn:ietf:rfc:3264</name>
+  <desc>Signals support for the SDP offer / answer model described in RFC 3264</desc>
+  <doc>XEP-0176</doc>
+</var>
+    ]]></code>
+  </section2>
   <section2 topic='Jingle Transport Methods' anchor='registrar-transports'>
     <p>The XMPP Registrar shall include "ice-udp" in its registry of Jingle transport methods. The registry submission is as follows:</p>
     <code><![CDATA[
@@ -979,6 +990,6 @@ INITIATOR                  NAT                  RESPONDER
   ]]></code>
 </section1>
 <section1 topic='Acknowledgements' anchor='ack'>
-  <p>Thanks to Steffen Larsen and Paul Witty for their comments.</p>
+  <p>Thanks to Olivier Cr&#234;te, Tim Julien, Steffen Larsen, Robert McQueen, Mike Ruprecht, and Paul Witty for their feedback.</p>
 </section1>
 </xep>