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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON |
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PCAP_CREATE(3PCAP) PCAP_CREATE(3PCAP)
pcap_create - create a live capture handle
#include <pcap/pcap.h>
char errbuf[PCAP_ERRBUF_SIZE];
pcap_t *pcap_create(const char *source, char *errbuf);
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 all supported Linux systems, as well as
on recent versions of macOS and Solaris, a source argument of
"any" or NULL can be used to capture packets from all network
interfaces. The latter should not be confused with all available
capture devices as seen by pcap_findalldevs(3PCAP), which may also
include D-Bus, USB etc. 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.
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.
pcap(3PCAP)
This page is part of the libpcap (packet capture library) project.
Information about the project can be found at
⟨http://www.tcpdump.org/⟩. If you have a bug report for this
manual page, see ⟨http://www.tcpdump.org/#patches⟩. This page was
obtained from the project's upstream Git repository
⟨https://github.com/the-tcpdump-group/libpcap.git⟩ on 2025-02-02.
(At that time, the date of the most recent commit that was found
in the repository was 2025-01-31.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
6 September 2024 PCAP_CREATE(3PCAP)
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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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