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Application LayerApplication Layer

PART VIPART VI

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Position of application layer

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Network layer duties

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Chapters

Chapter 24 Client-Server Model

Chapter 25 Domain Name System

Chapter 26 SMTP and FTP

Chapter 27 HTTP and WWW

Chapter 28 Multimedia

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Chapter 24

Client-ServerModel:

Socket Interface

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24.1 Client-Server Model24.1 Client-Server Model

Relationship

Concurrency

Processes

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Figure 24.1 Client-server model

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Figure 24.2 Client-server relationship

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Figure 24.3 Connectionless iterative server

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Figure 24.4 Connection-oriented concurrent server

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24.2 Socket Interface24.2 Socket Interface

Sockets

Connectionless Iterative Server

Connection-Oriented Server

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Figure 24.5 Socket structure

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Figure 24.6 Socket types

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Figure 24.7 Socket interface for connectionless iterative server

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Figure 24.8 Socket interface for connection-oriented concurrent server