We are encountering a problem with IE 6.0 SP1 where it seems to have problems with compressed data being served from the IBM HTTP Server 2.0.47 (Apache). Using the mod_deflate option to compress static and dynamic data on the run. The problem is that the client side will "hang" and do nothing, we are not sure what it could be but it looks like it is related to the javascript files not being decompressed properly. The strange thing is that the problem appears semi-randomly on one client. We have tested it on about 5 clients. When the problem occurred we discovered that the last line of a javascript file is missing, this line only contains a closing bracket, }. However, this file downloads correctly on other clients and when mod_deflate is OFF. So when using the built-in script debugging tool provided with IE (or MS Office?) the execution works correctly until the last executable point in the file (which is not the last line), then the client application hangs, although IE is responding correctly. This leads me to the assumption that the file is not decompressed properly on the client or not compressed properly on the server (unlikely since it only occurs for one client). Even IBM, the providers of this Apache server are unable to solve the problem, see http://publib.boulder.ibm.com/httpserv/ihsdiag/deflate_diag.html . They reference an Apache module called mod_net_trace, but there are no other references to it on the web. On the Apache server we have enabled SSL (mod_ssl), client-side caching (mod_expires) and compression (mod_deflate). When we disable mod_deflate the client will run correctly. We have not tried disabling mod_ssl or mod_expires. Even when we disable compression for HTML and JS files the problem still occurs. ######################################## # Apache settings for mod_deflate LoadModule deflate_module modules/mod_deflate.so <IfModule mod_deflate.c> SetOutputFilter DEFLATE #the two above compress everything unless excluded below SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.pdf$ no-gzip dont-vary # Next two lines are just for testing SetEnvIfNoCase Request_URI \.js$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.html$ no-gzip dont-vary DeflateFilterNote ratio DeflateCompressionLevel 9 </IfModule> ######################################### Fixing this issue will help us enormously in providing clients with a slow network a decent service. Thank you, Simon --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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