XEP-0234: Add missing received and desc elements in schema.

xep-0234.xml

@@ -1017,11 +1017,26 @@ a=file-range:1024-*]]></code>
     </xs:complexType>
   </xs:element>
 
+  <xs:element name='received'>
+    <xs:complexType>
+      <xs:attribute name='creator' use='required'>
+        <xs:simpleType>
+          <xs:restriction base='xs:NCName'>
+            <xs:enumeration value='initiator'/>
+            <xs:enumeration value='responder'/>
+          </xs:restriction>
+        </xs:simpleType>
+      </xs:attribute>
+      <xs:attribute name='name' type='xs:string' use='required'/>
+    </xs:complexType>
+  </xs:element>
+
   <xs:complexType name='fileTransferElementType'>
     <xs:all xmlns:h='urn:xmpp:hashes:2' minOccurs='0'>
       <xs:element name='date' type='xs:date'/>
       <xs:element name='media-type' type='xs:string'/>
       <xs:element name='name' type='xs:string'/>
+      <xs:element name='desc' type='xs:string'/>
       <xs:element name='size' type='xs:positiveInteger'/>
       <xs:element name='range' type='fileTransferRangeType'/>
       <xs:element ref='h:hash' minOccurs='0' maxOccurs='unbounded'/>