checkorder.hh
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	#ifndef CLICK_CHECKORDER_HH
	#define CLICK_CHECKORDER_HH
	#include <click/element.hh>
	#include <clicknet/tcp.h>
	#include <click/error.hh>
	#include <click/timer.hh>
	#include "util.hh"

	CLICK_DECLS


	class CheckOrder : public Element {

	public:

	CheckOrder();
	~CheckOrder();


	// analyze a TCP flows (timeouts, duplicate acks, etc.)
	// it assumes that sequence number will not wrap, so do not run it too long!

	const char *class_name() const { return "CheckOrder"; }
	const char *port_count() const { return "1/1"; }

	int configure(Vector<String> &, ErrorHandler *);
	int initialize(ErrorHandler *);

	void push(int,Packet *);

	void run_timer(Timer*);

	// Handlers
	void add_handlers();
	static int debug_handler(const String &, Element , void ,ErrorHandler *);
	static int active_handler(const String &, Element , void ,ErrorHandler *);

	void set_active(bool b) {_active=b;}
	void set_debug(bool b) {_debug = b;}
	void set_verb_debug(bool b) {_verb_debug = b;}

	private:

	// TODO: replace IPAddress with flow information (e.g. src_ip:src_port, dst_ip_dst:port)

	bool _debug;
	bool _verb_debug;
	bool _active;
	bool _only_tcp;


	HashTable<IPAddress, uint16_t> _last_empower_seq;
	HashTable<IPAddress, uint32_t> _last_tcp_seq;

	HashTable<IPAddress, int> _received;
	HashTable<IPAddress, int> _received_tcp;
	HashTable<IPAddress, int> _ooo;
	HashTable<IPAddress, int> _ooo_tcp;

	Timestamp _now;

	Timer _timer;




	};



	CLICK_ENDDECLS
	#endif