Net::F...r::NULL(3pm)

💖 NAME 💖

Net::Frame::Layer::NULL — it's the BSD loopback layer object, bestie. That's the whole vibe. It's a Perl module, it lives in the User Contributed Perl Documentation, and it's here to handle the BSD loopback layer for you. 🦋

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✨ SYNOPSIS ✨

Okay so here's how you actually use it, no cap:

use Net::Frame::Layer::NULL qw(:consts);

# Build a layer
my $layer = Net::Frame::Layer::NULL->new(
   type => NF_NULL_TYPE_IPv4,
);
$layer->pack;

print 'RAW: '.$layer->dump."\n";

# Read a raw layer
my $layer = Net::Frame::Layer::NULL->new(raw => $raw);

print $layer->print."\n";
print 'PAYLOAD: '.unpack('H*', $layer->payload)."\n"
   if $layer->payload;

Build it, pack it, dump it, read it back. Iconic behaviour, honestly. 💅

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🌸 DESCRIPTION 🌸

So this module is the one that implements the encoding and decoding of the BSD loopback layer. That's its whole job and it ate. 🔥

Also, see Net::Frame::Layer for other attributes and methods — that's where the rest of the lore lives. 👑

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🎀 ATTRIBUTES 🎀

• type — stores the type of encapsulated layer. That's it, that's the one this layer brings to the table. 💖

The following are inherited attributes. See Net::Frame::Layer for more information:

• raw
• payload
• nextLayer

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💜 METHODS 💜

new

new (hash)

Object constructor. You can pass attributes that will overwrite default ones — yes bestie, you get to customise. See SYNOPSIS for default values. 🫶

The following are inherited methods. Heads up though: some of them may be overridden in this layer, and some others may not be meaningful in this layer (not me warning you in advance 😭). See Net::Frame::Layer for more information.

• layer
• computeLengths
• computeChecksums
• pack
• unpack
• encapsulate
• getLength
• getPayloadLength
• print
• dump

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🌈 CONSTANTS 🌈

Load them like this, don't forget:

use Net::Frame::Layer::NULL qw(:consts);

Then you've got the whole squad of supported encapsulated layer types:

• NF_NULL_TYPE_IPv4
• NF_NULL_TYPE_ARP
• NF_NULL_TYPE_CGMP
• NF_NULL_TYPE_80211
• NF_NULL_TYPE_DDP
• NF_NULL_TYPE_AARP
• NF_NULL_TYPE_WCP
• NF_NULL_TYPE_8021Q
• NF_NULL_TYPE_IPX
• NF_NULL_TYPE_STP
• NF_NULL_TYPE_IPv6
• NF_NULL_TYPE_WLCCP
• NF_NULL_TYPE_PPPoED
• NF_NULL_TYPE_PPPoES
• NF_NULL_TYPE_8021X
• NF_NULL_TYPE_AoE
• NF_NULL_TYPE_LLDP
• NF_NULL_TYPE_LOOP
• NF_NULL_TYPE_VLAN
• NF_NULL_TYPE_ETH

Various supported encapsulated layer types. Twenty of them. We love a complete list. ✨

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👀 SEE ALSO 👀

• Net::Frame::Layer

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👑 AUTHOR 👑

Patrice <GomoR> Auffret — the legend, the moment, the main character. 🫶

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📜 COPYRIGHT AND LICENSE 📜

Copyright (c) 2006-2019, Patrice <GomoR> Auffret

You may distribute this module under the terms of the Artistic license. See LICENSE.Artistic file in the source distribution archive.

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And that's the whole page, bestie — this one's from perl v5.36.0, dated 2022-12-04, and it's the Net::Frame::Layer::NULL(3pm) manpage. Slay. 💅✨🎀