Hi all, I needed to reverse proxy IIS (with modified FlatCompression ISAPI filter, which dont cache), cache it on disk and uncompress for clients that dont Accept-Encoding: gzip. I've finally managed to set up all these mods together. Suprisingly it works w/o mod_rewrite and SetEnvIf. Here's my httpd.conf:
<httpd.conf> [...] # # - reverse proxy gzipped data from IIS # - disk cache it # - inflate for clients not sending `Accept-Encoding: gzip` header # # Based on fact (bug?), that when request is served from cache (quick_handler) # the config directive `RequestHeader set Accept-Encoding "gzip,foobar"' # is overriden by client's Accept-Encoding request header. # # Side effect: not yet cached response data goes out uncompressed. # LoadModule headers_module modules/mod_headers.so LoadModule deflate_module modules/mod_deflate.so LoadModule filter_module modules/mod_filter.so LoadModule cache_module modules/mod_cache.so LoadModule disk_cache_module modules/mod_disk_cache.so RequestHeader set Accept-Encoding "gzip,foobar" Header echo Accept-Encoding FilterDeclare my_filter1 CONTENT_SET FilterProvider my_filter1 INFLATE req=Accept-Encoding $foobar FilterProvider my_filter1 INFLATE req=Accept-Encoding !$gzip FilterChain my_filter1 CacheRoot c:/apache2/cache CacheMinFileSize 0 CacheMaxFileSize 256000 CacheEnable disk / CacheDirLevels 2 CacheDirLength 2 ProxyPreserveHost On ProxyPass / http://xxx.xxx.xxx.xxx/ ProxyPassReverse / http://xxx.xxx.xxx.xxx/ </httpd.conf> I also needed to patch mod_cache.c to initialize output filters and properly handle redirects from backend. Here's the patch: http://nagoya.apache.org/bugzilla/showattachment.cgi?attach_id=13433 Regards Przemek Czerkas
