O'Reilly logo

The Tangled Web by Michal Zalewski

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 2. It Starts with a URL

The most recognizable hallmark of the Web is a simple text string known as the Uniform Resource Locator (URL). Each well-formed, fully qualified URL is meant to conclusively address and uniquely identify a single resource on a remote server (and in doing so, implement a couple of related, auxiliary functions). The URL syntax is the cornerstone of the address bar, the most important user interface (UI) security indicator in every browser.

In addition to true URLs used for content retrieval, several classes of pseudo-URLs use a similar syntax to provide convenient access to browser-level features, including the integrated scripting engine, several special document-rendering modes, and so on. Perhaps unsurprisingly, ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required