NAME¶
Net::Frame::Layer::IPv6::Fragment - Internet Protocol v6 Fragment Extension
Header layer object
SYNOPSIS¶
use Net::Frame::Simple;
use Net::Frame::Layer::IPv6::Fragment;
my $icmp = Net::Frame::Layer::IPv6::Fragment->new(
nextHeader => NF_IPv6_PROTOCOL_TCP,
reserved => 0,
fragmentOffset => 0,
res => 0,
mFlag => 0,
identification => 0
);
#
# Read a raw layer
#
my $layer = Net::Frame::Layer::IPv6::Fragment->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 IPv6 Fragment Extension
Header layer.
RFC:
ftp://ftp.rfc-editor.org/in-notes/rfc2460.txt
See also
Net::Frame::Layer for other attributes and methods.
ATTRIBUTES¶
- nextHeader
- Protocol number of the next header after the Fragment header.
- reserved
- Not used; set to zeroes.
- fragmentOffset
- Specifies the offset, or position, in the overall message where the data
in this fragment goes. It is specified in units of 8 bytes (64 bits) and
used in a manner very similar to the field of the same name in the IPv4
header.
- res
- Not used; set to zeroes.
- mFlag
- Same as the flag of the same name in the IPv4 header - when set to 0,
indicates the last fragment in a message; when set to 1, indicates that
more fragments are yet to come in the fragmented message.
- identification
- Same as the field of the same name in the IPv4 header, but expanded to 32
bits. It contains a specific value that is common to each of the fragments
belonging to a particular message, to ensure that pieces from different
fragmented messages are not mixed together.
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.
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¶
Michael Vincent
COPYRIGHT AND LICENSE¶
Copyright (c) 2012, Michael Vincent
You may distribute this module under the terms of the Artistic license. See
LICENSE.Artistic file in the source distribution archive.