2014-01-04 16:16:12.537 Zhaocailing[9118:a0b] -[IMRootManager xmppStreamDidDisconnect:withError:] [L118] Error Domain=NSPOSIXErrorDomain Code=61 "Connection refused" UserInfo=0xc1f5c70 {NSLocalizedFailureReason=Error in connect() function, NSLocalizedDescription=Connection refused}