pcap_setdirection(3) pcap_setdirection(3)
NAME
pcap_setdirection - set the direction for which packets will be cap-
tured
SYNOPSIS
#include <pcap/pcap.h>
pcap_setdirection(3) *p, pcap_direction_t d);
DESCRIPTION
pcap_setdirection(3) is used to specify a direction that packets will be
captured. d is one of the constants PCAP_D_IN, PCAP_D_OUT or
PCAP_D_INOUT. PCAP_D_IN will only capture packets received by the
device, PCAP_D_OUT will only capture packets sent by the device and
PCAP_D_INOUT will capture packets received by or sent by the device.
PCAP_D_INOUT is the default setting if this function is not called.
pcap_setdirection(3) isn't necessarily fully supported on all platforms;
some platforms might return an error for all values, and some other
platforms might not support PCAP_D_OUT.
This operation is not supported if a ``savefile'' is being read.
RETURN VALUE
pcap_setdirection(3) returns 0 on success and -1 on failure. If -1 is
returned, pcap_geterr() or pcap_perror() may be called with p as an
argument to fetch or display the error text.
SEE ALSO
pcap(3), pcap_geterr(3)
5 April 2008 pcap_setdirection(3)
libpcap 1.7.2 - Generated Sat Mar 14 15:48:15 CDT 2015