Unable to create CoDelQueue object

[Esteban . Coma]

Hello everyone,

I was just developing a simple code that uses two types of queues: DropTailQueue and CoDelQueue.

In this small piece of code:

Ptr<Queue> qt;

if ( qtype == "droptail" ) {

//Create a DropTailQueue

qt = CreateObject<DropTailQueue> (); 

//DropTailQueue uses packets by default.

}

else if ( qtype == "codel" ){

//Create a CoDelQueue

qt = CreateObject<CoDelQueue> ();

qt->SetAttribute("Mode", EnumValue(Queue::QUEUE_MODE_PACKETS)); //bytes by default

}

else {

NS_LOG_ERROR ("ERROR: queue type not supported");

    exit(-1);

}

When I indicate by command line that I want it to create a codel queue, it fails with this error:

../myscripts/simulation2/simulation2.cc: In function ‘int main(int, char**)’:

../myscripts/simulation2/simulation2.cc:151:21: error: ‘CoDelQueue’ was not declared in this scope

   qt = CreateObject<CoDelQueue> ();

And I have no idea why, when creating a DropTailQueue the simulation works fine, and they both inherit from ns3::Queue so it should work.

Thank you.