Classes
 ClassDescription
 ConnectionFactory Connection factory If not instructed, connection factory firstly try local service (timout in 2 seconds).
 GroupConnectionStrategy GroupConnectionStrategy: connect to given server one after another Dispatch FactoryEvent.READY when one connection available, data {connection:IConnection} Dispatch FactoryEvent.EXCEPTION_TIMEOUT when all connection tries fail.
 RecorderFactory recorder factory create core requester and recorder as per the available connection
 URLListFactory get url list use method requestURLList() then listen the Event ResultEvent.RESULT on URLListFactory Class instance Dispatch ResultEvent.RESULT when succss.