Microsoft KB Archive/224579

= Internet Explorer 4.x and 5 Do Not Support Content-Base Headers =

Article ID: 224579

Article Last Modified on 1/24/2007

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APPLIES TO


 * Microsoft Internet Explorer 5.0
 * Microsoft Internet Explorer 4.01 Service Pack 1
 * Microsoft Internet Explorer 4.01 Service Pack 2
 * Microsoft Internet Explorer 4.0 128-Bit Edition
 * Microsoft Internet Explorer 5.0
 * Microsoft Internet Explorer 4.01 Service Pack 2
 * Microsoft Internet Explorer 5.0
 * Microsoft Internet Explorer 4.01 Service Pack 1
 * Microsoft Internet Explorer 4.01 Service Pack 2
 * Microsoft Internet Explorer 4.0 128-Bit Edition
 * Microsoft Internet Explorer 4.01 128-Bit Edition
 * Microsoft Internet Explorer 4.0 128-Bit Edition
 * Microsoft Internet Explorer 4.0 for UNIX
 * Microsoft Internet Explorer 4.01
 * Microsoft Internet Explorer 4.5 for Macintosh
 * Microsoft Internet Explorer 4.01 for Macintosh
 * Microsoft Internet Explorer 4.0 for Macintosh
 * Microsoft Internet Explorer 5.0
 * Microsoft Internet Explorer 5.0

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This article was previously published under Q224579



SUMMARY
Microsoft Internet Explorer does not support Hypertext Transfer Protocol (HTTP) version 1.1 Content-Base headers.



MORE INFORMATION
Request For Comment (RFC) number 2068 regarding version 1.1 of the Hypertext Transfer Protocol refers to, but does not require support for Content-Base headers: 14.11 Content-Base

The Content-Base entity-header field may be used to specify the base URI for resolving relative URLs within the entity. This header field is described as Base in RFC 1808, which is expected to be revised.

Content-Base     = "Content-Base" ":" absoluteURI

If no Content-Base field is present, the base URI of an entity is  defined either by its Content-Location (if that Content-Location URI   is an absolute URI) or the URI used to initiate the request, in that order of precedence. Note, however, that the base URI of the contents within the entity-body may be redefined within that entity-body. Note that Netscape Navigator and other third-party Web browser programs do not support Content-Base headers. The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

Keywords: kbinfo kbenv kb3rdparty KB224579

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