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Net::Packet::NULL(3) User Contributed Perl Documentation Net::Packet::NULL(3)
 

Net::Packet::NULL - BSD loopback layer 2 object

   #
   # 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;

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.

type
Stores the type of encapsulated layer.

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.

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.

Patrice <GomoR> Auffret

Copyright (c) 2004-2009, Patrice <GomoR> Auffret
You may distribute this module under the terms of the Artistic license. See LICENSE.Artistic file in the source distribution archive.

NetPacket, Net::RawIP, Net::RawSock

Hey! The above document had some coding errors, which are explained below:
Around line 91:
Non-ASCII character seen before =encoding in '# Build'. Assuming CP1252
2009-11-09 perl v5.28.1

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