Technical Reference: Base Operating System and Extensions, Volume 1

pcap_snapshot Subroutine

Purpose

Obtains the number of bytes that will be saved for each packet captured.

Library

pcap Library (libpcap.a)

Syntax

#include <pcap.h> int pcap_snapshot( pcap_t * p);

Description

The pcap_snapshot subroutine returns the snapshot length, which is the number of bytes to save for each packet captured.

Note

This subroutine should only be called after successful calls to either the pcap_open_live subroutine or pcap_open_offline subroutine. It should not be called after a call to the pcap_close subroutine.

Parameters

p	Points to the packet capture descriptor as returned by the pcap_open_live or the pcap_open_offline subroutine.

Return Values

The pcap_snapshot subroutine returns the snapshot length.

Related Information

The pcap_close (pcap_close Subroutine) subroutine, pcap_open_live (pcap_open_live Subroutine) subroutine, pcap_open_offline (pcap_open_offline Subroutine) subroutine.