Chapter 2 application layer 2. 1 Principles of 2.6 P2P applications network 2.7 Socket applications programming with 2.2 Web and Http tcp 2. 3 FTP 2. 8 Socket 24日 ectronic Mail programming with SMTP POP3, IMAP UDP 2,5 DNS uct by Weifeng Sun chapter 2-application layer 2/73Introduct by Weifeng Sun chapter2- application layer 2/73 Chapter 2: Application layer • 2.1 Principles of network applications • 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 TCP • 2.8 Socket programming with UDP