Next: 41.1 The class Application Up: 6 Application Previous: 6 Application   Contents   Index

41. Applications and transport agent API

Applications sit on top of transport agents in ns. There are two basic types of applications: traffic generators and simulated applications. Figure  illustrates two examples of how applications are composed and attached to transport agents. Transport agents are described in Part V (Transport).

Figure: Example of Application Composition

This chapter first describes the base Application../ns-2/app.h. Next, the transport API, through which applications request services from underlying transport agents, is described. Finally, the current implementations of traffic generators and sources are explained.

• 41.1 The class Application
• 41.2 The transport agent API
  • 41.2.1 Attaching transport agents to nodes
  • 41.2.2 Attaching applications to agents
  • 41.2.3 Using transport agents via system calls
  • 41.2.4 Agent upcalls to applications
  • 41.2.5 An example
  
  
• 41.3 The class TrafficGenerator
  • 41.3.0.0.1 Exponential On/Off
  • 41.3.0.0.2 Pareto On/Off
  • 41.3.0.0.3 CBR
  • 41.3.0.0.4 Traffic Trace
  • 41.3.1 An example
  
  
• 41.4 Simulated applications: Telnet and FTP
  • 41.4.0.0.1 Application/FTP
  • 41.4.0.0.2 Application/Telnet
  
  
• 41.5 Applications objects
• 41.6 Commands at a glance