Manual Reference Pages - PCAP_SETDIRECTION (3)
pcap_setdirection - set the direction for which packets will be captured
int pcap_setdirection(pcap_t *p, pcap_direction_t d);
pcap_setdirection() is used to specify a direction that packets will be captured.
d is one of the constants
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() isnt necessarily fully supported on all platforms; some platforms might
return an error for all values, and some other platforms might not
This operation is not supported if a savefile is being read.
pcap_setdirection() returns 0 on success and -1 on failure.
If -1 is returned,
pcap_perror() may be called with
p as an argument to fetch or display the error text.
|--> ||PCAP_SETDIRECTION (3) ||5 April 2008 |
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