pcap_set_snaplen.3pcap - Man Page

#include <pcap/pcap.h>

int pcap_set_snaplen(pcap_t *p, int snaplen);

pcap_set_snaplen() sets the snapshot length to be used on a capture handle when the handle is activated to snaplen.

pcap_set_snaplen() returns 0 on success or PCAP_ERROR_ACTIVATED if called on a capture handle that has been activated.

pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP)