Problem with HTTP/1.1 Warning header, and proposed fix

Document Type Expired Internet-Draft (http WG)
Authors Josh Cohen  , Scott Lawrence 
Last updated 1997-07-30
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
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Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The current HTTP/1.1 (RFC2068) specification introduces a new Warning header, meant to carry status information about a request that cannot or should not be carried by the response status code. The existing specification for the interaction between Warning and HTTP caches is faulty, in that it may allow incorrect results after cache validation operations. This document identifies two separate (but related) problems, and proposes revisions of the HTTP/1.1 specification to solve these problems.


Josh Cohen (
Scott Lawrence (

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