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BCP 178

RFC 6648

"Deprecating the "X-" Prefix and Similar Constructs in Application Protocols", June 2012

Canonical URL:
http://www.rfc-editor.org/rfc/rfc6648.txt
This document is also available in this non-normative format: PDF.
Status:
BEST CURRENT PRACTICE
Authors:
P. Saint-Andre
D. Crocker
M. Nottingham
Stream:
IETF
Source:
appsawg (app)

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Abstract

Historically, designers and implementers of application protocols have often distinguished between standardized and unstandardized parameters by prefixing the names of unstandardized parameters with the string "X-" or similar constructs. In practice, that convention causes more problems than it solves. Therefore, this document deprecates the convention for newly defined parameters with textual (as opposed to numerical) names in application protocols. This memo documents an Internet Best Current Practice.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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