-(void)queryNextProxy0096{XMPPLogTrace();state = STATE_PROXY_DISCO_0096;
//    <iq type='set' id='offer1' to='receiver@domainopenfire/Spark 2.6.3'' from="">
//      <si xmlns='http://jabber.org/protocol/si'
//             id='uuid'
//              mime-type='text/plain'
//                  profile='http://jabber.org/protocol/si/profile/file-transfer'>
//          <file xmlns='http://jabber.org/protocol/si/profile/file-transfer'
//              name='test.txt'
//                  size='1022''>
//              <desc>This is a test. If this were a real file...</desc>
//          </file>
//          <feature xmlns='http://jabber.org/protocol/feature-neg'>
//              <x xmlns='jabber:x:data' type='form'>
//                  <field var='stream-method' type='list-single'>
//                      <option><value>http://jabber.org/protocol/bytestreams</value></option>
//                      <option><value>http://jabber.org/protocol/ibb</value></option>
//                  </field>
//              </x>
//          </feature>
//      </si>
//    </iq>XMPPJID *xmppJid = nil;xmppJid = jid;XMPPIQ *iq  ;NSXMLElement *si = [NSXMLElement elementWithName:@"si" xmlns:@"http://jabber.org/protocol/si"];[si addAttributeWithName:@"id" stringValue:uuid];[si addAttributeWithName:@"mime-type" stringValue:@"text/plain"];[si addAttributeWithName:@"profile" stringValue:@"http://jabber.org/protocol/si/profile/file-transfer"];NSXMLElement *file = [NSXMLElement elementWithName:@"file" xmlns:@"http://jabber.org/protocol/si/profile/file-transfer"];[file addAttributeWithName:@"name" stringValue:[sendFileDic objectForKey:@"name"]];[file addAttributeWithName:@"size" stringValue:[sendFileDic objectForKey:@"size"]];NSXMLElement *des = [NSXMLElement elementWithName:@"desc" stringValue:@"test"];[file addChild:des];NSXMLElement *feature = [NSXMLElement elementWithName:@"feature" xmlns:@"http://jabber.org/protocol/feature-neg"];NSXMLElement *x = [NSXMLElement elementWithName:@"x" xmlns:@"jabber:x:data"];[x addAttributeWithName:@"type" stringValue:@"form"];NSXMLElement *field = [NSXMLElement elementWithName:@"field"];[field addAttributeWithName:@"var" stringValue:@"stream-method"];[field addAttributeWithName:@"type" stringValue:@"list-single"];NSXMLElement *option1 = [NSXMLElement elementWithName:@"option"];NSXMLElement *value1 = [NSXMLElement elementWithName:@"value" stringValue:@"http://jabber.org/protocol/bytestreams"];[option1 addChild:value1];[field addChild:option1];NSXMLElement *option2 = [NSXMLElement elementWithName:@"option"];NSXMLElement *value2 = [NSXMLElement elementWithName:@"value" stringValue:@"http://jabber.org/protocol/ibb"];[option2  addChild:value2];[field addChild:option2];[x addChild:field];[feature addChild:x];[si addChild:file];[si addChild:feature];[self updateDiscoUUID];iq = [XMPPIQ iqWithType:@"set" to:jid elementID:discoUUID child:si];[iq addAttributeWithName:@"from" stringValue:[xmppStream.myJID full]] ;[xmppStream sendElement:iq];
}