Microsoft KB Archive/168408

= PRB: FTP Does Not Support InternetSetFilePointer =

Article ID: 168408

Article Last Modified on 5/17/2002

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APPLIES TO


 * Microsoft Internet Explorer 3.0
 * Microsoft Internet Explorer 3.01
 * Microsoft Internet Explorer 3.02
 * Microsoft Internet Explorer 4.0 128-Bit Edition
 * Microsoft Internet Explorer 4.01 Service Pack 2
 * Microsoft Windows Internet Services (WinInet)

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This article was previously published under Q168408



SYMPTOMS
InternetSetFilePointer is wrongly documented as supporting FTP and Gopher protocols. In reality it is only supported for the HTTP protocol and only works for requests to servers that support the HTTP/1.1 "RANGE" header.



CAUSE
Support for partial file download is contingent on both the client and the server. Because of a lack of FTP servers that support partial file downloads, no support for FTP was included for InternetSetFilePointer. The Gopher specification does not support partial file downloads.



STATUS
This behavior is by design.

Keywords: kbprb KB168408

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