NAME
Net::Packet::NULL - BSD loopback layer 2 object
SYNOPSIS
#
# Usually, you do not use this module directly
#
use Net::Packet::Consts qw(:null);
require Net::Packet::NULL;
# Build a layer
my $layer = Net::Packet::NULL->new;
$layer->pack;
print 'RAW: '.unpack('H*', $layer->raw)."\n";
# Read a raw layer
my $layer = Net::Packet::NULL->new(raw => $raw);
print $layer->print."\n";
print 'PAYLOAD: '.unpack('H*', $layer->payload)."\n"
if $layer->payload;DESCRIPTION
This modules implements the encoding and decoding of the BSD loopback layer.
See also Net::Packet::Layer and Net::Packet::Layer2 for other attributes and methods.
ATTRIBUTES
- type
-
Stores the type of encapsulated layer.
METHODS
- new
-
Object constructor. You can pass attributes that will overwrite default ones. Default values:
type: NP_NULL_TYPE_IPv4
- pack
-
Packs all attributes into a raw format, in order to inject to network. Returns 1 on success, undef otherwise.
- unpack
-
Unpacks raw data from network and stores attributes into the object. Returns 1 on success, undef otherwise.
- isTypeIpv4
- isTypeIpv6
- isTypeIp - is type IPv4 or IPv6
-
Helper methods. Return true is the encapsulated layer is of specified type, false otherwise.
CONSTANTS
Load them: use Net::Packet::Consts qw(:null);
- NP_NULL_HDR_LEN
-
NULL header length in bytes.
- NP_NULL_TYPE_IPv4
- NP_NULL_TYPE_IPv6
-
Various supported encapsulated layer types.
AUTHOR
Patrice <GomoR> Auffret
COPYRIGHT AND LICENSE
Copyright (c) 2004-2015, Patrice <GomoR> Auffret
You may distribute this module under the terms of the Artistic license. See LICENSE.Artistic file in the source distribution archive.