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32.1 Using application-level data in

Figure 32.1: Examples of application-level data flow

In order to transmit application-level data in , we provide a uniform structure to pass data among applications, and to pass data from applications to transport agents (Figure 32.1). It has three major components: a representation of a uniform application-level data unit (ADU), a common interface to pass data between applications, and two mechanisms to pass data between applications and transport agents.