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PCAP_OPEN_OFFLINE
Section: Misc. Reference Manual Pages (3PCAP)
Updated: 5 April 2008
Index
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NAME
pcap_open_offline, pcap_fopen_offline - open a saved capture file for reading
SYNOPSIS
#include <pcap/pcap.h>
char errbuf[PCAP_ERRBUF_SIZE];
pcap_t *pcap_open_offline(const char *fname, char *errbuf);
pcap_t *pcap_fopen_offline(FILE *fp, char *errbuf);
DESCRIPTION
pcap_open_offline()
is called to open a ``savefile'' for reading.
fname
specifies the name of the file to open. The file can have the pcap file
format as described in
pcap-savefile(5),
which is the file format used by, among other programs,
tcpdump(1)
and
tcpslice(1),
or can have the pcap-ng file format, although not all pcap-ng files can
be read.
The name "-" in a synonym for
stdin.
Alternatively, you may call
pcap_fopen_offline()
to read dumped data from an existing open stream
fp.
Note that on Windows, that stream should be opened in binary mode.
RETURN VALUE
pcap_open_offline()
and
pcap_fopen_offline()
return a
pcap_t *
on success and
NULL
on failure.
If
NULL
is returned,
errbuf
is filled in with an appropriate error message.
errbuf
is assumed to be able to hold at least
PCAP_ERRBUF_SIZE
chars.
SEE ALSO
pcap(3PCAP), pcap-savefile(5)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- SEE ALSO
-
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