Smack Receive Stream-Error ( conflict 409 )

Hi all.i use aSmack.I make xmpp client in android.I check other client connected to xmpp server.I look 409 conflict packet.

19.3.2014 10:08:54 : <stream:error xmlns:stream=“http://etherx.jabber.org/streams”></stream:error>

i dont receive this packet.please help me? i want receive this stream:error packet

Look here: http://stackoverflow.com/questions/16077100/xmpp-streamerror-conflict-on-login-w ith-asmack/