application layer and client server model

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Chapter 15

Application Layerand

Client-ServerModel

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CONTENTSCONTENTS

• CLIENT-SERVER MODEL• CONCURRENCY• PROCESSES

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Figure 15-1 Comparison between OSI and TCP/IP

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CLIENT-SERVERMODEL

15.115.1

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Figure 15-2

Client-server model

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Figure 15-3

Client-server relationship

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CONCURRENCY

15.215.2

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Figure 15-4

Server types

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Figure 15-5

Connectionless iterative server

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Figure 15-6

Connection-oriented concurrent server

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PROCESSES

15.315.3

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Figure 15-7

Programs and processes

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Figure 14-8

Prototype for the getpid function

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Figure 15-9

A program that prints its own processid

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Figure 14-10

Prototype for the fork function

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Figure 14-11

A program with one parent and one child

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Figure 15-12

A program with two fork functions

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Figure 15-13

The output of the program in Figure 15.12

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Figure 15-14A program that prints the processids

of the parent and the child

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Figure 15-15 Example of a server program with parent and child processes