NetPacket::ARP 0.04

NetPacket::ARP is a Perl module to assemble and disassemble ARP (Address Resolution Protocol) packets.

SYNOPSIS

use NetPacket::ARP;

$tcp_obj = NetPacket::ARP->decode($raw_pkt);
$tcp_pkt = NetPacket::ARP->encode(params...); # Not implemented

NetPacket::ARP provides a set of routines for assembling and disassembling packets using ARP (Address Resolution Protocol).

Methods

NetPacket::ARP->decode([RAW PACKET])

Decode the raw packet data given and return an object containing instance data. This method will quite happily decode garbage input. It is the responsibility of the programmer to ensure valid packet data is passed to this method.

NetPacket::ARP->encode(param => value)

Return a ARP packet encoded with the instance data specified. Not implemented.

Functions

NetPacket::ARP::strip([RAW PACKET])
Return the encapsulated data (or payload) contained in the TCP packet. Since no payload data is encapulated in an ARP packet (only instance data), this function returns undef.

Instance data

The instance data for the NetPacket::ARP object consists of the following fields.

htype

Hardware type.

proto

Protocol type.

hlen

Header length.

plen

Protocol length.

opcode

One of the following constants:

ARP_OPCODE_REQUEST
ARP_OPCODE_REPLY
RARP_OPCODE_REQUEST
RARP_OPCODE_REPLY

sha

Source hardware address.

spa

Source protocol address.

tha

Target hardware address.

tpa

Target protocol address.