Communicating Systems with UML 2: Modeling and Analysis of by David Garduno Barrera

By David Garduno Barrera

Content material:
Chapter 1 Why Use Uml to version community Protocols? (pages 1–29):
Chapter 2 basic Transmission (pages 31–73):
Chapter three uncomplicated Chat program (pages 75–131):
Chapter four Non?Reliable Transmission Mediums (pages 133–179):
Chapter five easy shipping Protocol (pages 181–239):

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Communicating Systems with UML 2: Modeling and Analysis of Network Protocols

Content material: bankruptcy 1 Why Use Uml to version community Protocols? (pages 1–29): bankruptcy 2 uncomplicated Transmission (pages 31–73): bankruptcy three easy Chat software (pages 75–131): bankruptcy four Non? trustworthy Transmission Mediums (pages 133–179): bankruptcy five easy shipping Protocol (pages 181–239):

Extra resources for Communicating Systems with UML 2: Modeling and Analysis of Network Protocols

Sample text

A transition may involve guard conditions, and it can execute actions and send output signals. Note that the expression [doorway ->isEmpty()] simply means that the close event will fire the related transition only if there is no object or person obstructing the doorway. This expression is defined in Object Constraint Language (OCL), the declarative language for describing rules that apply to (UML) models developed at IBM, and now part of the UML standard [OCL 10]. 10. 11. In this figure, the system changes from state S1 to state S2 on receipt of InputSignalEvent only if the condition “Condition” is true.

From the point of view of the client, the Server_to_Client interface is “provided” since it represents the messages that the client can receive. 24, Interface, in [SSU 10]. 6(a). From the point of view of the client, the Client_to_Server interface is “required” since it represents the set of messages that the client asks its communication partners to provide. 6(a). 6. 6(b). Note that it is the port, and not the class itself, which is linked to the interfaces. Indeed, in the communications protocol domain, the nodes receive and send messages through the ports; these ports are therefore the artifacts that should be linked to the interfaces.

7. 7. 3. Architecture design To represent the global system, we represent the client and the server classes as parts5 of this System. 8. 8. Composition of system, server and client classes We also need a communication channel (Ch_C-S) between the client and the server. We could use a communication channel without any ports; however, in the telecommunications world, every communicating entity sends and receives data only through its ports. Thus, we link the communication channel to the corresponding ports in the client and server.

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