if ( copy != null ){
for (int i=0;i<copy.size();i++){
DHTSpeedTesterListener listener = (DHTSpeedTesterListener)copy.get(i);
listeners.add( listener );
for ( int j=0;j<active_pings.size();j++){
activePing ping = (activePing)active_pings.get(j);
if ( ping.isInformedAlive()){
try{
listener.contactAdded( ping );
}catch( Throwable e ){
Debug.printStackTrace(e);
}