A header file of NTP utility functions. More...

#include <stdint.h>
#include <time.h>

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Functions
int64_t	ntputil_get_epoch (uint32_t hnums, char *hnames, uint16_t ports)
	Get NTP timestamps from the given or public NTP servers. More...

uint32_t	_convert_to_host_byte_order (uint32_t in)
	Converting network byte order to host byte order. More...

Detailed Description

A header file of NTP utility functions.

Definition in file ntputil.h.

Function Documentation

uint32_t _convert_to_host_byte_order ( uint32_t in )

Converting network byte order to host byte order.

Note: There is a problem in mocking ntohl in GMock, so the wrapper function is temporarily used.

Converting network byte order to host byte order.

Definition at line 125 of file ntputil.c.

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Get NTP timestamps from the given or public NTP servers.

Parameters

[in]	hnums	A number of hostname and port pairs. If 0 is given, the NTP server pool will be used.
[in]	hnames	A list of hostname
[in]	ports	A list of port

Returns: an Unix epoch time as microseconds on success, negative values on error

Note: ntp_timestamp_t recv_ts in ntp_packet_t means the timestamp as the packet left the NTP server. 'sec' corresponds to the seconds passed since 1900 and 'frac' is needed to convert seconds to smaller units of a second such as microsceonds. Note that the bit/byte order of those data should be converted to the host's endianness.; NTP uses an epoch of January 1, 1900 while the Unix epoch is the number of seconds that have elapsed since January 1, 1970. For this reason, we subtract 70 years worth of seconds from the seconds since 1900

Definition at line 140 of file ntputil.c.

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