Computer Network Programming Intro to Sockets
Computer Network ProgrammingIntro to SocketsDr. Sam HsuComputer Science & EngineeringFlorida Atlantic University2Intro to Sockets The Client/Server Model Layered Network Structure Sockets Internet Addressing Protocol Port Numbers Socket Programming Network Byte Order Connectionless/Connection-oriented Examples3The Client/Server ModelrequestresponseClientClientServerCl oses server connection. Closes client connection.(Goes back to sleep: iterative).Waits for server reply, sends results to user, sends another user request ...Handles client request, sends back reply ...Upon receiving user request,contacts server, sends request on user s contacted by client, calls/creates a handler to handle. (Goes back to sleep: concurrent)Waits for user to sleep waiting for client to and and on an LAN5Client/Server via a WAN6OSI vs. Internet Protocol Layers 7Protocol Data and HeadersSocket StructUser DataTCP/UDPHeaderTCP/UDP DataIPHeaderIP DataFrameHeaderNetwork Frame DataFrameTail(Link) (Internet/ Network )(Transport)Socket LayerTCP or UDP LayerNetwork Layer (Application)IP Layer8What Is A Socket?
Computer Network Programming Intro to Sockets Dr. Sam Hsu Computer Science & Engineering Florida Atlantic University. 2 Intro to Sockets The Client/Server Model Layered Network Structure Sockets Internet Addressing Protocol Port Numbers Socket Programming
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