File formats:

Status:

BEST CURRENT PRACTICE

Authors:

P. Saint-Andre
D. Crocker
M. Nottingham

Stream:

IETF

Source:

appsawg (app)

Cite this BCP: TXT  |  XML

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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 8729.