title: XMPP Getting Room Configuration Change Messages While Offline
body: <p>We are using XMPPFramework for IOS to implement chat functions to our mobile applications.
  We've changing the room name functionality and when an admin changes the room name, server sends  message to all group receipants, when all the receipants are online there is no problem however when a user is not joined to group(not connected at that time) he is not able to receive the message even when he is back and online again.</p>
  
  <p>We are using history parameter to retrieve old messages in group, but  we cannot receive these configuration changes (and also the information of users added or banned from server) messages.
  Do you know how can we solve that?</p>
  
  <pre><code>NSXMLElement *history = [NSXMLElement elementWithName:@"history"];
  [history addAttributeWithName:@"seconds" stringValue:[NSString stringWithFormat:@"%.0f",disconnetSecond]];
  [xmppRoom joinRoomUsingNickname:cusername history:history];
  </code></pre>
  
  <p>Thanks</p>