Aggregates multiple packets into a single packet by inserting a length field header before each subpacket. This module collects packets according to the aggregation policy and combines them into a single aggregated packet. Each subpacket is preceded by a SubpacketLengthHeader that contains the length of the following subpacket, allowing the receiver to extract individual packets.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Used in compound modules

Name	Type	Description
DataService	compound module	(no description)
DataService	compound module	(no description)

Extends

Name	Type	Description
AggregatorBase	compound module	Base module for packet aggregation. Collects multiple packets and combines them into a single aggregated packet based on a configurable aggregation policy. Aggregation improves network efficiency by reducing header overhead when transmitting multiple small packets. The module delegates the aggregation decision to a policy class or module that determines if a packet can be aggregated with the current set.

Parameters

Name	Type	Default value	Description
displayStringTextFormat	string	"processed %p pk (%l)"	Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
deleteSelf	bool	false
aggregatorPolicyClass	string	""
aggregatorPolicyModule	string	".aggregatorPolicy"	Only used if aggregatorPolicyClass==""

Properties

Name	Value	Description
class	SubpacketLengthHeaderBasedAggregator
display	i=block/join

Gates

Name	Direction	Size	Description
in	input
out	output

Source code

//
// Aggregates multiple packets into a single packet by inserting a length field
// header before each subpacket. This module collects packets according to the
// aggregation policy and combines them into a single aggregated packet. Each
// subpacket is preceded by a SubpacketLengthHeader that contains the length of
// the following subpacket, allowing the receiver to extract individual packets.
//
module SubpacketLengthHeaderBasedAggregator extends AggregatorBase like IPacketAggregator
{
    parameters:
        @class(SubpacketLengthHeaderBasedAggregator);
}

File: src/inet/protocolelement/aggregation/SubpacketLengthHeaderBasedAggregator.ned

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