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Chapter 2: outline

Chapter 2: outline. 2.1 principles of network applications app architectures app requirements 2.2 Web and HTTP 2.3 FTP 2.4 electronic mail SMTP, POP3, IMAP 2.5 DNS. 2.6 P2P applications 2.7 socket programming with UDP and TCP. Pure P2P architecture. no always-on server

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Application Layer – Peer-to-peer

Application Layer – Peer-to-peer. UIUC CS438: Communication Networks Summer 2014 Fred Douglas Slides: Fred , Kurose&amp;Ross (sometimes edited). A Step Back. Today, everything is megacorps : Google etc. You. A Step Back. mobile network. What, fundamentally, does the internet do?.

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Pure P2P architecture

Pure P2P architecture. no always-on server arbitrary end systems directly communicate peers are intermittently connected and change IP addresses examples: file distribution (BitTorrent) Streaming (KanKan) VoIP (Skype). P2P file distribution: BitTorrent. file divided into 256Kb chunks

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