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Relative Uniform Resource Locators (RFC1808)

IP.com Disclosure Number: IPCOM000004064D
Original Publication Date: 1995-Jun-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 13 page(s) / 32K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Fielding: AUTHOR

Abstract

A Uniform Resource Locator (URL) is a compact representation of the location and access method for a resource available via the Internet. When embedded within a base document, a URL in its absolute form may contain a great deal of information which is already known from the context of that base document's retrieval, including the scheme, network location, and parts of the url-path. In situations where the base URL is well-defined and known to the parser (human or machine), it is useful to be able to embed URL references which inherit that context rather than re-specifying it in every instance. This document defines the syntax and semantics for such Relative Uniform Resource Locators.

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Network Working Group R. Fielding

Request for Comments: 1808 UC Irvine

Category: Standards Track June 1995

Relative Uniform Resource Locators

Status of this Memo

This document specifies an Internet standards track protocol for the

Internet community, and requests discussion and suggestions for

improvements. Please refer to the current edition of the "Internet

Official Protocol Standards" (STD 1) for the standardization state

and status of this protocol. Distribution of this memo is unlimited.

Abstract

A Uniform Resource Locator (URL) is a compact representation of the

location and access method for a resource available via the Internet.

When embedded within a base document, a URL in its absolute form may

contain a great deal of information which is already known from the

context of that base document's retrieval, including the scheme,

network location, and parts of the url-path. In situations where the

base URL is well-defined and known to the parser (human or machine),

it is useful to be able to embed URL references which inherit that

context rather than re-specifying it in every instance. This

document defines the syntax and semantics for such Relative Uniform

Resource Locators.

1. Introduction

This document describes the syntax and semantics for "relative"

Uniform Resource Locators (relative URLs): a compact representation

of the location of a resource relative to an absolute base URL. It

is a companion to RFC 1738, "Uniform Resource Locators (URL)" [2],

which specifies the syntax and semantics of absolute URLs.

A common use for Uniform Resource Locators is to embed them within a

document (referred to as the "base" document) for the purpose of

identifying other Internet-accessible resources. For example, in

hypertext documents, URLs can be used as the identifiers for

hypertext link destinations.

Absolute URLs contain a great deal of information which may already

be known from the context of the base document's retrieval, including

the scheme, network location, and parts of the URL path. In

situations where the base URL is well-defined and known, it is useful

to be able to embed a URL reference which inherits that context

rather than re-specifying it within each instance. Relative URLs can

also be used within data-entry dialogs to decrease the number of

characters necessary to describe a location.

In addition, it is often the case that a group or "tree" of documents

has been constructed to serve a common purpose; the vast majority of

URLs in these documents point to locations within the tree rather

than outside of it. Similarly, documents located at a particular

Internet site are much more likely to refer to other resources at

that site than to resources at remote sites.

Relative addressing of URLs allows document trees to be parti...