PCAP_CREATE(3PCAP) PCAP_CREATE(3PCAP)

NAME

pcap_create - create a live capture handle

SYNOPSIS

#include <pcap/pcap.h>

char errbuf[PCAP_ERRBUF_SIZE];

pcap_t *pcap_create(const char *source, char *errbuf);

DESCRIPTION

pcap_create() is used to create a packet capture handle to look at
packets on the network. source is a string that specifies the
network device to open; on Linux systems with 2.2 or later kernels, a
source argument of "any" or NULL can be used to capture packets from
all interfaces. errbuf is a buffer large enough to hold at least
PCAP_ERRBUF_SIZE chars.

The returned handle must be activated with pcap_activate(3PCAP)
before packets can be captured with it; options for the capture, such
as promiscuous mode, can be set on the handle before activating it.

RETURN VALUE

pcap_create() returns a pcap_t * on success and NULL on failure. If
NULL is returned, errbuf is filled in with an appropriate error
message.

SEE ALSO

pcap(3PCAP)

30 November 2023 PCAP_CREATE(3PCAP)