September 2002
Intermediate to advanced
656 pages
22h 14m
English
book
HTTP: The Definitive Guide
by David Gourley, Brian Totty, Marjorie Sayer, Anshu Aggarwal, Sailu Reddy
Content preview from HTTP: The Definitive GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
URL Shortcuts
Web clients understand and use a few URL shortcuts. Relative URLs are a convenient shorthand for specifying a resource within a resource. Many browsers also support “automatic expansion” of URLs, where the user can type in a key (memorable) part of a URL, and the browser fills in the rest. This is explained in Section 2.3.2.
Relative URLs
URLs come in two flavors: absolute and relative . So far, we have looked only at absolute URLs. With an absolute URL, you have all the information you need to access a resource.
On the other hand, relative URLs are incomplete. To get all the information needed to access a resource from a relative URL, you must interpret it relative to another URL, called its base .
Relative URLs are a convenient shorthand notation for URLs. If you have ever written HTML by hand, you have probably found them to be a great shortcut. Example 2-1 contains an example HTML document with an embedded relative URL.
Example 2-1. HTML snippet with relative URLs
<HTML> <HEAD><TITLE>Joe's Tools</TITLE></HEAD> <BODY> <H1> Tools Page </H1> <H2> Hammers <H2> <P> Joe's Hardware Online has the largest selection of <A HREF="./hammers.html">hammers </BODY> </HTML>
In Example 2-1, we have an HTML document for the resource:
http://www.joes-hardware.com/tools.html
In the HTML document, there is a hyperlink containing the URL ./hammers.html. This URL seems incomplete, but it is a legal relative URL. It can be interpreted relative to the URL of the document in which it ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.