- From: <david@carter.net>
- Date: 7 Jun 2001 08:59:52 -0700
- To: www-lib@w3.org
Hoping someone out there has already done this. . . We have a vendor-provided application that generates dynamic html content via a (compiled) CGI program. We do not have access to the source. It returns a complete HTTP response, headers followed by the body HTML. I want to add content-encoding (zlib deflation) to the body content returned by the cgi program. Under netscape/iplanet architecture, the only way to "post-process" the output of a cgi program appears to be by inserting another program between the server's cgi handler & the cgi program. This program will invoke the vendor CGI, read the it's output from stdin, and apply deflation if the browser says it supports deflate encoding & if the content-size returned is above some minimum size (tentatively 1k). My questions: (1) Is there already an implementation of this somewhere? It seems that it would be a common desire to compress dynamic content? (2) If there is no existing implementation, is libwww appropriate for this usage? All the examples appear to be for client-side usage, but I note that there are zlib compression routines in addition to the decompression needed by the client. (2) What header modifications should this program make? Obvious ones are: change content-length to reflect new length, and add content-encoding: deflate. Are there others? Maybe "vary" since we're doing compression conditionally? (Not completely sure how this impacts proxying and/or caching, but all output from this application will be transmitted to the client via SSL). Thanks for any advice and/or constructive critism. -- David Carter david@carter.net
Received on Thursday, 7 June 2001 12:00:05 UTC