NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | BACKWARD COMPATIBILITY | SEE ALSO | COLOPHON |
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PCAP_SET_TSTAMP_PRECISION(3PCAP) PCAP_SET_TSTAMP_PRECISION(3PCAP)
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 PCAP_TSTAMP_PRECISION_MICRO and PCAP_TSTAMP_PRECISION_NANO 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, PCAP_ERROR_TSTAMP_PRECISION_NOTSUP if the capture device does not support the requested time stamp precision, PCAP_ERROR_ACTIVATED 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.
pcap(3PCAP), pcap_get_tstamp_precision(3PCAP), pcap-tstamp(7)
This page is part of the libpcap (packet capture library)
project. Information about the project can be found at
⟨http://www.tcpdump.org/⟩. If you have a bug report for this
manual page, see ⟨http://www.tcpdump.org/#patches⟩. This page
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23 August 20P1C8AP_SET_TSTAMP_PRECISION(3PCAP)