pcap_open_live(3PCAP) man page
Updated: 6 December 2017
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pcap_open_live - open a device for capturing
pcap_t *pcap_open_live(const char *device, int snaplen,
int promisc, int to_ms, char *errbuf);
is used to obtain a packet capture handle to look
at packets on the network.
is a string that specifies the network device to open; on Linux systems
with 2.2 or later kernels, a
argument of "any" or
can be used to capture packets from all interfaces.
specifies the snapshot length to be set on the handle.
specifies whether the interface is to be put into promiscuous mode.
is non-zero, promiscuous mode will be set, otherwise it will not be set.
specifies the packet buffer timeout, as a non-negative value, in
for an explanation of the packet buffer timeout.)
on success and
is filled in with an appropriate error message.
may also be set to warning text when
succeeds; to detect this case the caller should store a zero-length string in
and display the warning to the user if
is no longer a zero-length string.
is assumed to be able to hold at least
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