pcap_t *pcap_open_offline(const char *fname, char *errbuf);
pcap_t *pcap_fopen_offline(FILE *fp, char *errbuf);
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
which is the file format used by, among other programs,
or can have the pcap-ng file format, although not all pcap-ng files can
The name "-" in a synonym for
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.