question: public boolean isOpen ( ) { if ( secureChannelId == - 1 ) return false ; long expireTime = ( ( long ) ( tokenLifetime * 1.25 ) ) + tokenIssueTime ; long currentTime = System . currentTimeMillis ( ) ; return expireTime > currentTime ; }
target:  Return true if the secure channel has been opened and is not (hopefully) closed on the server. Secure channel is open as long as it as security token that is alive,  even if its transport layer connection is disconnected.