Compound module that delays packets for a specified amount of time while preserving their order. Implements the IPacketDelayer interface using a queue and server architecture. The queue stores packets while they wait, and the server processes each packet with a processing time equal to the configured delay. Note that the actual packet delay will be the sum of the queueing time and the configured delay. Unlike the simple PacketDelayer module, this implementation always maintains packet order regardless of delay distribution.

Usage diagram

The following diagram shows usage relationships between types. Unresolved types are missing from the diagram.

Inheritance diagram

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

Parameters

Name	Type	Default value	Description
clockModule	string	""	Relative path of a module that implements IClock(1,2); optional
delay	double

Properties

Name	Value	Description
display	i=block/delay

Gates

Name	Direction	Size	Description
in	input
out	output

Source code

//
// Compound module that delays packets for a specified amount of time while
// preserving their order. Implements the IPacketDelayer interface using a queue
// and server architecture. The queue stores packets while they wait, and the
// server processes each packet with a processing time equal to the configured
// delay. Note that the actual packet delay will be the sum of the queueing time
// and the configured delay. Unlike the simple PacketDelayer module, this 
// implementation always maintains packet order regardless of delay distribution.
//
module QueueingPacketDelayer like IPacketDelayer
{
    parameters:
        string clockModule = default(""); // Relative path of a module that implements IClock; optional
        volatile double delay @unit(s);
        *.clockModule = default(absPath(this.clockModule));
        @display("i=block/delay");
    gates:
        input in @labels(push);
        output out @labels(push);
    submodules:
        queue: <default("PacketQueue")> like IPacketQueue {
            parameters:
                @display("p=150,100");
        }
        server: <default("PacketServer")> like IPacketServer {
            parameters:
                processingTime = default(parent.delay);
                @display("p=350,100");
        }
    connections:
        in --> { @display("m=w"); } --> queue.in;
        queue.out --> server.in;
        server.out --> { @display("m=e"); } --> out;
}

File: src/inet/queueing/common/QueueingPacketDelayer.ned

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