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New HTTP Compression Web Filter available for testing - 24.Sep.2004 5:34:00 PM

Kiliman

Posts: 11
Joined: 5.Feb.2004
From: Virginia
Status: offline

I just finished writing a new web filter for ISA 2004 that implements gzip compression for published web servers.

To minimize memory for compression, I used Chunked Transfer Encoding. This way I don't have to accumulate the entire compressed output to add the Content-Length: header.

Since I only use the PREPROC_HEADERS and SEND_RAW_DATA notification events, it works equally well as a standard IIS ISAPI filter.

I've tested this on ISA2004 running in VMWare. I plan on installing it on a test server this weekend. If anybody would like to check it out, just send me email.

The source is also available to anyone that wants it.

Michael Carter
michael@volcanictech.com