Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

pcap_open_offline(3pcap) [debian man page]

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)

Check Out this Related Man Page

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)
Man Page

4 More Discussions You Might Find Interesting

1. Programming

pcap.h

I cant use pcap.h include file. How can I do so? :confused: (8 Replies)
Discussion started by: Pervez Sajjad
8 Replies

2. Shell Programming and Scripting

Warning errors

tcpdump: WARNING: arptype 65535 not supported by libpcap - falling back to cooked socket cannot find user pcap What does this mean ^^ and how can it be fixed? (1 Reply)
Discussion started by: chrisb345
1 Replies

3. Programming

Process multiple pcap files at once

Hi all, I'm writing a program using libpcap, and I have multiple pcap files in a folder that I want to capture. I currently have handle = pcap_open_offline("/data/traffic/pcap1.pcap", errbuf"); which works fine since pcap_open_offline() takes in a filename. However, I want to process... (0 Replies)
Discussion started by: lancer6238
0 Replies

4. Shell Programming and Scripting

Sampling pcap file

Hi, I have a standard pcap file created using tcpdump. The file looks like 06:49:36.487629 IP 202.1.175.252 > 71.126.222.64: ICMP echo request, id 52765, seq 1280, length 40 06:49:36.489552 IP 192.120.148.227 > 71.126.222.64: ICMP echo request, id 512, seq 1280, length 40 06:49:36.491812 IP... (8 Replies)
Discussion started by: sajal.bhatia
8 Replies