SASL Authentication Exception while connecting to openfire XMPP IOS

Question

I'm working on a chat app where we need instant messaging with XMPP. While logging in to app, I'm able to authenticate user with OpenFire. But, in OpenFire logs, I see this

org.jivesoftware.openfire.auth.AuthorizationManager - AuthorizationManager: Trying Default Mapping.map(deep) 
2015.01.17 12:39:05 org.jivesoftware.openfire.auth.DefaultAuthorizationMapping - DefaultAuthorizationMapping: No realm found 
2015.01.17 12:39:05 org.jivesoftware.openfire.auth.AuthorizationManager - AuthorizationManager: Trying Default Policy.authorize(deep , deep) 
2015.01.17 12:39:05 org.jivesoftware.openfire.auth.DefaultAuthorizationPolicy - DefaultAuthorizationPolicy: Checking authenID realm 

I'm not getting what kind of warning this is. But it seems like SASL authentication. And in app, Second time If I try connecting XMPP with Openfire again, I got this in openfire logs

 2015.01.17 12:43:10 org.jivesoftware.openfire.net.SASLAuthentication - SASLAuthentication: SaslException 
javax.security.sasl.SaslException: DIGEST-MD5: digest response format violation. Mismatched response. 
at com.sun.security.sasl.digest.DigestMD5Server.validateClientResponse(Unknown Source) 
at com.sun.security.sasl.digest.DigestMD5Server.evaluateResponse(Unknown Source) 
at org.jivesoftware.openfire.net.SASLAuthentication.handle(SASLAuthentication.java:368) 
at org.jivesoftware.openfire.net.StanzaHandler.process(StanzaHandler.java:176) 
at org.jivesoftware.openfire.nio.ConnectionHandler.messageReceived(ConnectionHandler.java:181) 

Cause of these warnings, I'm unable to perform Send friend request functionality of XMPP.I'm totally confused how to get rid of this kind of warnings. As in android ,we can disable/enable SASLAuthentication. Is there any way to disable in IOS. or if there's any other way to solve these issues. Also,logged in user is not showing online in openfire. Any help would be appreciated. Thanks.