Packet Header

Generic per-packet information.

This packet header structure contains:

Field Name	Description
Timestamp	Specify a time interval (elapsed time)
Capture Length	Length of portion present (must be less then or equal to Length)
Length	Length of current received packet (off wire)

This header are not freed by the caller, and not guaranteed to be valid after the next call to Pcap.next(PacketHeader), Pcap.nextEx(PacketHeader, PacketBuffer), Pcap.loop(int cnt, PacketHandler, <T>), and Pcap.dispatch(int cnt, PacketHandler, <T>).