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Full Discussion: pcap.h
Top Forums Programming pcap.h Post 302077694 by matrixmadhan on Sunday 25th of June 2006 02:28:59 AM
Old 06-25-2006
first check whether you have the packet capture library

and pcap.h available under /usr/include

else you cannot use it
 

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PCAP_OPEN_OFFLINE(3PCAP)												  PCAP_OPEN_OFFLINE(3PCAP)

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) 5 April 2008 PCAP_OPEN_OFFLINE(3PCAP)
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