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#ifndef TRACKER_H

#define TRACKER_H



#include <sys/types.h>



#include "./def.h"

#include "./bufio.h"



#ifdef WINDOWS

#include <Winsock2.h>



#else

#include <unistd.h>

#include <sys/time.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <arpa/inet.h>

#include <sys/param.h>

#endif



#define T_FREE 		0

#define T_CONNECTING	1

#define T_READY		2

#define T_FINISHED	3



class btTracker

{

 private:

  char m_host[MAXHOSTNAMELEN];

  char m_path[MAXPATHLEN];

  int m_port;



  struct sockaddr_in m_sin;



  unsigned char m_status:2;

  unsigned char m_f_started:1;

  unsigned char m_f_stoped:1;

  unsigned char m_f_completed:1;



  unsigned char m_f_pause:1;

  unsigned char m_f_reserved:2;





  time_t m_interval;		// 与Tracker通信的时间间隔

  time_t m_last_timestamp;	// 最后一次成功与Tracker通信的时间

  size_t m_connect_refuse_click;



  size_t m_ok_click;	// tracker ok response counter

  size_t m_peers_count;	// total number of peers

  size_t m_prevpeers;	// number of peers previously seen



  SOCKET m_sock;

  BufIo m_reponse_buffer;

  

  int _IPsin(char *h, int p, struct sockaddr_in *psin);

  int _s2sin(char *h,int p,struct sockaddr_in *psin);

  int _UpdatePeerList(char *buf,size_t bufsiz);



 public:

  btTracker();

  ~btTracker();



  int Initial();



  void Reset(time_t new_interval);



  unsigned char GetStatus() { return m_status;}

  void SetStatus(unsigned char s) { m_status = s; }



  SOCKET GetSocket() { return m_sock; }



  void SetPause() { m_f_pause = 1; }

  void ClearPause() { m_f_pause = 0; }



  void SetStoped() { Reset(15); m_f_stoped = 1; m_last_timestamp -= 15;}



  int Connect();

  int SendRequest();

  int CheckReponse();

  int IntervalCheck(const time_t *pnow,fd_set* rfdp, fd_set *wfdp);

  int SocketReady(fd_set *rfdp, fd_set *wfdp, int *nfds);



  size_t GetRefuseClick() const { return m_connect_refuse_click; }

  size_t GetOkClick() const { return m_ok_click; }

  size_t GetPeersCount() const { return m_peers_count; }

};



extern btTracker Tracker;



#endif