#ifndef __NTP_H__
#define __NTP_H__

#include "timestamp.h"
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

#include <netinet/in.h>

#define NTP_LEN 48  /* size of sntp message */

struct ntp_msg {
  uint8_t leap;
  uint8_t version;
  uint8_t mode;
  uint8_t stratum;
  uint8_t poll;
  uint8_t precision;
  uint32_t delay;
  uint32_t dispersion;
  struct in_addr reference;
  struct timestamp reference_ts;
  struct timestamp originate_ts;
  struct timestamp receive_ts;
  struct timestamp transmit_ts;
};

void init_req(struct ntp_msg* msg, struct timestamp *current);
void ntp_msg_read(struct ntp_msg *dest, unsigned char* buf, int offset);
void ntp_msg_write(struct ntp_msg* src, unsigned char* buf, int offset);
void fprint_ntp_msg(FILE* f, struct ntp_msg* msg);
#define print_ntp_msg(_msg) fprint_ntp_msg(stdout, _msg)

#endif /* __NTP_H__ */