A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Deprecating Use of the "X-" Prefix in Application Protocols
Author(s) : Peter Saint-Andre
D. Crocker
Mark Nottingham
Filename : draft-saintandre-xdash-02.txt
Pages : 11
Date : 2011-07-11
Many application protocols use named parameters to identify data
(media types, header fields in Internet mail messages and HTTP
requests, etc.). Historically, protocol designers and implementers
have often distinguished between "standard" and "non-standard"
parameters by prefixing the latter with the string "X-" or similar
constructions (e.g., "x."), where the "X" is commonly understood to
stand for "eXperimental" or "eXtension". Although in theory the "X-"
convention was a good way to avoid collisions (and attendant
interoperability problems) between standard parameters and non-
standard parameters, in practice the costs associated with the
advancement of non-standard parameters into the standards space
outweigh the benefits. Therefore this document deprecates the "X-"
convention for most application protocols.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-saintandre-xdash-02.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-saintandre-xdash-02.txt
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