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Media Type Sniffing

Document Type Replaced Internet-Draft (individual)
Expired & archived
Authors Adam Barth , Ian Hickson
Last updated 2011-09-26 (Latest revision 2011-01-24)
Replaced by draft-ietf-websec-mime-sniff
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-websec-mime-sniff
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


Many web servers supply incorrect Content-Type header fields with their HTTP responses. In order to be compatible with these servers, user agents consider the content of HTTP responses as well as the Content-Type header fields when determining the effective media type of the response. This document describes an algorithm for determining the effective media type of HTTP responses that balances security and compatibility considerations. Please send feedback on this draft to


Adam Barth
Ian Hickson

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)