Tutorial on Socket Programming - University of Toronto

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1Tutorial on Socket ProgrammingComputer Networks -CSC 458Department of Computer SciencePooyanHabibi(Slides are mainly from SeyedHossein Mortazavi, Monia Ghobadi, and Amin Tootoonchian, ...)2Outline Client-server paradigm sockets Socket Programming in UNIX3End System: Computer on the NetInternetAlso known as a host ...4Clients and ServersClient program Running on end host Requests service , Web browserServer program Running on end host Provides service , Web serverGET Site under construction 5Client-Server CommunicationClient Server Always on Serve services to many clients , Not initiate contact with the clients Needs a fixed address Sometimes on Initiates a request to the server when interested , web browser Needs to know the server s address6Socket: End Point of CommunicationProcesses send messages to one another Message traverse the underlying networkA Process sends and receives through a Socket Analogy: the doorway of the house.

Tutorial on Socket Programming Computer Networks - CSC 458 Department of Computer Science Hao Wang (Slides are mainly from Seyed Hossein Mortazavi, Monia Ghobadi, and Amin Tootoonchian , …) 2 Outline •Client-server paradigm •Sockets § Socket programming in UNIX. 3

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