各个rules里代码分析

InternalChannelRule

private static class NoInternalChannelPredicate implements Predicate {
        
        /**
         * 
         */
        public NoInternalChannelPredicate() {
            super();
        }
    
        public boolean evaluate(Object obj) {
            if(obj == null){
                return false;
            }
            if(obj instanceof MessageEnvelope){
                obj = ((MessageEnvelope)obj).getRequest();
            }
            if( obj instanceof SSHXMessage){
              if(Internal_Channel_Name.equalsIgnoreCase(((SSHXMessage)obj).getChannel())){
                  return false;
              }
            }
            return true;
        }
    }

LinkedList list = new LinkedList();
        for(Iterator itr = new FilterListIterator(results.getResults().listIterator(),new NoInternalChannelPredicate()); itr.hasNext();){
            list.add(itr.next());
        }