Prerequisites
Reti di telecomunicazioni A<br />Sistemi operativi A
Course unit content
Reminders on OSI model, General Internetworking concepts, Internet, transport protocols.<br /><br />Process communications in Internet. Associations, ports, sockets. The Client/Server paradigm. Connectionless vs. connection-oriented. System calls for socket programming. Assigning ports to processes. Sequential and concurrent tcp servers.<br /><br />The Domain Name System. Domain name space: tree structure; labels; domains and subdomains. DNS components: Name space; Resolver; Name Server. Nameservers hierarchy, Start Of Authority. The nslookup utility. System calls to the resolver.<br /><br />Information representation: ASCII code and ASCII extensions, national variants. Unicode. Internet documentation.<br /><br />Basic Internet applications: remote access and the telnet protocol. Using a telnet client as a diagnostic tool.<br /><br />Remote file handling: FTP protocl.<br /><br />Internet e-mail. System architecture: Message Transfer System and User Agents. The SMTP protocol and message formatting as per RFC2822. Message handling on workstations: POP3 and IMAP protocols. Handling non-text information: uuencode and MIME.<br /><br />The NNTP protocol.<br /><br />World Wide Web, different types of Information Server. Web addressing: URIs and URLs. Hypertext, browsers and web navigation. Reminders on HTML and hyperlinks. <br /><br />The HTTP protocol: general concepts, HTTP versions; messages; methods; connection handling. HTTP: intermediate systems, proxy and caching; Cookies; HTTP authentication ans security. Web robots.<br /><br />Web hosting; Virtual Hosts; Redirection. Configuring http servers.
Bibliography
W. Richard Stevens: TCP/IP Illustrated, volume 3 - TCP for Transactions,HTTP, NNTP and the UNIX Domain Protocols Addison-Wesley,1996. ISBN 0-201-63495-3
