CIS 3210 Lecture Notes - Lecture 8: Uniform Resource Locator, Hostname, Hypertext Transfer Protocol

• School: University of Guelph
• Department: Computing and Information Science
• Course: CIS 3210
• Professor: Xiaodong Lin

Document Summary

Http - is a protocol used by a web application. Html - mark-up language for encoding text and images. A web page consists of object: html le, as well as various resources: images, audio, video, js. If a web page has 5 images, the page has 6 object (the 5 images and the html. Http - the protocol for exchanging data between content providers (servers) and content consumers (browsers / clients) Each object is addressable by a url (uniform resource locator) Client requests a page form the web server. Parses the responded page and nds urls to referenced object. Client: the browser that makes the requests, received and displays the web objects. Server: web server sends objects in response to requests from clients. Client initiates tcp connection (creates socket) to server, (http is port 80) Starts a separate thread to process client requests or allocates one from a thread pool.