Internet DRAFT - draft-mogul-http-delta

draft-mogul-http-delta



A new Request for Comments is now available in online RFC libraries.


        RFC 3229

        Title:      Delta encoding in HTTP
        Author(s):  J. Mogul, B. Krishnamurthy, F. Douglis,
                    A. Feldmann, Y. Goland, A. van Hoff,
                    D. Hellerstein 
        Status:     Standards Track
        Date:       January 2002
        Mailbox:    JeffMogul@acm.org, bala@research.att.com,
                    douglis@research.att.com, anja@cs.uni-sb.de,
                    yaron@goland.org, avh@marimba.com,
                    danielh@crosslink.net 
        Pages:      49
        Characters: 111953
        Updates/Obsoletes/SeeAlso:  None

        I-D Tag:    draft-mogul-http-delta-10.txt

        URL:        ftp://ftp.rfc-editor.org/in-notes/rfc3229.txt


This document describes how delta encoding can be supported as a
compatible extension to HTTP/1.1.

Many HTTP (Hypertext Transport Protocol) requests cause the retrieval
of slightly modified instances of resources for which the client
already has a cache entry.  Research has shown that such modifying
updates are frequent, and that the modifications are typically much
smaller than the actual entity.  In such cases, HTTP would make more
efficient use of network bandwidth if it could transfer a minimal
description of the changes, rather than the entire new instance of the
resource.  This is called "delta encoding."

This is now a Proposed Standard Protocol.

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.

This announcement is sent to the IETF list and the RFC-DIST list.
Requests to be added to or deleted from the IETF distribution list
should be sent to IETF-REQUEST@IETF.ORG.  Requests to be
added to or deleted from the RFC-DIST distribution list should
be sent to RFC-DIST-REQUEST@RFC-EDITOR.ORG.

Details on obtaining RFCs via FTP or EMAIL may be obtained by sending
an EMAIL message to rfc-info@RFC-EDITOR.ORG with the message body 
help: ways_to_get_rfcs.  For example:

        To: rfc-info@RFC-EDITOR.ORG
        Subject: getting rfcs

        help: ways_to_get_rfcs

Requests for special distribution should be addressed to either the
author of the RFC in question, or to RFC-Manager@RFC-EDITOR.ORG.  Unless
specifically noted otherwise on the RFC itself, all RFCs are for
unlimited distribution.echo 
Submissions for Requests for Comments should be sent to
RFC-EDITOR@RFC-EDITOR.ORG.  Please consult RFC 2223, Instructions to RFC
Authors, for further information.