Where should the stuff be sent? HTTP gives the client IP addressĮvery computer on the Internet has an unique address, which is its IP address.What kind of stuff is this? HTTP indicates characterizes resources as "text/plain", "image/jpeg", etc.Where is the stuff located? HTTP uses URLs (Uniform Resource Locators) to indicate the address of web resources.HTTP is an application layer protocol, implemented in 1991 by Tim Berners-Lee that sits on top of TCP/IP, the transport protocol. HTTP: The Hypertext Transfer Protocol, is the set of rules for transferring files (text, graphic images, sound, video, and other multimedia files) on the World Wide Web.
SMTP: The Simple Mail Transfer Protocol, which delivers electronic mail.FTP: The File Transfer Protocol, which is used for interactive file transfer.Telnet: The Network Terminal Protocol, which provides remote login over the network.On top of TCP/IP are the applications used to deliver data such as: Transmission Control Protocol (TCP) creates information packets, verifies that data is delivered across the network accurately and in proper sequence. Each packet is stamped with the addresses of the receiver and the sender and routing decisions are made on a packet-by-packet IP is responsible for moving data from one host toĪnother as packets. The Internet Protocol (IP) is the foundation for the World Wide Web. You click on a link in a web page and - like magic - new content appears. It requests and receives its data from a remotely located web serverĪpplication.
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Note: A single machine can be both a client and a server depending on the software configuration.Ī web browser is an example of a client-side application. A client is defined as a requester of services and a server is defined as the provider of services. The client-server model is the fundamental architecture of the World Wide Web where server machines respond to requests fromĬlient machines by serving content.
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