pcap_set_tstamp_precision(3PCAP) man page
Updated: 23 August 2018 • View in plain text • Return to Main Contents
pcap_set_tstamp_precision - set the time stamp precision returned in captures
#include <pcap/pcap.h> int pcap_set_tstamp_precision(pcap_t *p, int tstamp_precision);
pcap_set_tstamp_precision() sets the precision of the time stamp desired for packets captured on the pcap descriptor to the type specified by tstamp_precision. It must be called on a pcap descriptor created by pcap_create(3PCAP) that has not yet been activated by pcap_activate(3PCAP). Two time stamp precisions are supported, microseconds and nanoseconds. One can use options
to request desired precision. By default, time stamps are in microseconds.
pcap_set_tstamp_precision() returns 0 on success if the specified time stamp precision is expected to be supported by the capture device,
if the capture device does not support the requested time stamp
if called on a capture handle that has been activated.
This function became available in libpcap release 1.5.1. In previous releases, time stamps from a capture device or savefile are always given in seconds and microseconds.
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