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Internet Engineering Task Force (IETF)                    P. Saint-Andre
Request for Comments: 6648                           Cisco Systems, Inc.
BCP: 178                                                      D. Crocker
Category: Best Current Practice              Brandenburg InternetWorking
ISSN: 2070-1721                                            M. Nottingham
                                                               Rackspace
                                                               June 2012


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

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.

Status of This Memo

   This memo documents an Internet Best Current Practice.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   BCPs is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6648.

https://www.rfc-editor.org/rfc/rfc6648

 

RFC 6648: Deprecating the "X-" Prefix and Similar Constructs in Application Protocols

 

www.rfc-editor.org

https://stackoverflow.com/questions/3561381/custom-http-headers-naming-conventions

 

Custom HTTP headers : naming conventions

Several of our users have asked us to include data relative to their account in the HTTP headers of requests we send them, or even responses they get from our API. What is the general convention to...

stackoverflow.com

 

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