NAME¶
Net::Frame::Layer::UDP - User Datagram Protocol layer object
SYNOPSIS¶
use Net::Frame::Layer::UDP qw(:consts);
# Build a layer
my $layer = Net::Frame::Layer::UDP->new(
src => getRandomHighPort(),
dst => 0,
length => 0,
checksum => 0,
);
$layer->pack;
print 'RAW: '.$layer->dump."\n";
# Read a raw layer
my $layer = Net::Frame::Layer::UDP->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 UDP layer.
RFC:
ftp://ftp.rfc-editor.org/in-notes/rfc768.txt
See also
Net::Frame::Layer for other attributes and methods.
ATTRIBUTES¶
- src
- dst
- Source and destination ports.
- length
- The length in bytes of the datagram, including layer 7
payload (that is, layer 4 + layer 7).
- checksum
- Checksum of the datagram.
The following are inherited attributes. See
Net::Frame::Layer for more
information.
- raw
- payload
- nextLayer
METHODS¶
- new
- new (hash)
- Object constructor. You can pass attributes that will
overwrite default ones. See SYNOPSIS for default values.
- computeLengths
- Computes various lengths contained within this layer.
- computeChecksums ({ type => PROTO, src => IP,
dst => IP })
- In order to compute checksums of TCP, you need to pass the
protocol type (IPv4, IPv6), the source and destination IP addresses (IPv4
for IPv4, IPv6 for IPv6).
- getKey
- getKeyReverse
- These two methods are basically used to increase the speed
when using recv method from Net::Frame::Simple. Usually, you
write them when you need to write match method.
- match (Net::Frame::Layer::UDP object)
- This method is mostly used internally. You pass a
Net::Frame::Layer::UDP layer as a parameter, and it returns true if
this is a response corresponding for the request, or returns false if
not.
The following are inherited methods. Some of them may be overridden in this
layer, and some others may not be meaningful in this layer. See
Net::Frame::Layer for more information.
- layer
- computeLengths
- computeChecksums
- pack
- unpack
- encapsulate
- getLength
- getPayloadLength
- print
- dump
CONSTANTS¶
No constants here.
SEE ALSO¶
Net::Frame::Layer
AUTHOR¶
Patrice <GomoR> Auffret
COPYRIGHT AND LICENSE¶
Copyright (c) 2006-2011, Patrice <GomoR> Auffret
You may distribute this module under the terms of the Artistic license. See
LICENSE.Artistic file in the source distribution archive.