Article ID: 926188 - Last Review: October 27, 2007 - Revision: 1.6

Uploading files is faster in Windows Internet Explorer 7

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INTRODUCTION

This article describes how Microsoft has improved the performance of the HTTP file upload algorithm in Windows Internet Explorer 7. Uploading files is faster in Internet Explorer 7.

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Internet Explorer 7 improves the way that large files are uploaded when you use the HTTP file upload feature. In earlier versions of Internet Explorer, an upload operation may take a long time to finish when you upload a file that is larger than one megabyte. Internet Explorer 7 uses an improved algorithm to perform the upload operation of an HTTP POST request.

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REFERENCES

For more information about the problem in earlier versions of Internet Explorer, click the following article number to view the article in the Microsoft Knowledge Base:

329781 (http://support.microsoft.com/kb/329781/ ) HTTP file upload operation takes a long time to complete

The HTTP file upload feature is documented in RFC 1867, "Form-based File Upload in HTML." To view this document, visit the following Internet Engineering Task Force (IETF) Web site:

http://www.rfc-editor.org/ (http://www.rfc-editor.org/)

Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

You can use the INPUT type=file element to upload files from a Web page. For more information about this element, visit the following Microsoft Developer Network (MSDN) Web site:

http://msdn2.microsoft.com/en-us/library/ms535263.aspx (http://msdn2.microsoft.com/en-us/library/ms535263.aspx)

For more information about the HTTPSendRequest function, visit the following Microsoft Developer Network (MSDN) Web site:

http://msdn2.microsoft.com/en-us/library/aa384247.aspx (http://msdn2.microsoft.com/en-us/library/aa384247.aspx)

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