OMNET++

OMNeT++ is an extensible, modular, component-based C++ simulation library and framework, primarily for building network simulators. OMNeT++ provides infrastructure for parallel distributed simulation.

Core components of OMNET++:

• Compound module.
• Channel.
• Gate.
• Simple module.
• Links.

Simulation class libraries in OMNET++:

• Refection support for C++.
• User interface (GUI can even change the variable on-the-fly, cmd UI support batch execution).
• Statistic and distribution estimation class.
• Message, packet.
• Container classes for xample array, queue.
• Data collection classes.
• Transient detection and result accuracy detection classes.
• Module, gate, parameter, channel.

Sample code for OMNET++:

This is the sample code of how to define simple module.

simple Queue
{
parameters:
	int capacity;
	@class (mylib:Queue);
	@display(“i=block/queue”);
gates;
	input in;
	outpu out;
}
Simple BoundedQueue extends Queue
{
    capacity =10;
}
Simple PriorityQueue extends Queue
{
@class(PriorityQueue);
}