add the gzip feature to squid-2.7 on the fly
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This patch adds the feature of http compression on the fly for squid-2.7 =STATUS= This patch is at its very early phase of development and considered highly experimental. But you're encouraged to test it out on your side and report any quirks that you experience. We need your help! If you find this module useful and/or interesting, please consider joining the development! =INSTALLATION= Get the squid-2.7 source from http://www.squid-cache.org/Versions/v2/2.7/ Get the patch from http://github.com/yaoweibin/squid_gzip cd squid-2.7 patch -p1 < /path/to/http_gzip.patch compile squid with the following command: ./bootstrap.sh && ./configure --enable-http-gzip && make =EXAMPLE= I have tested in accelerator mode. <code> http_gzip on http_gzip_types text/html,text/plain </code> =DIRECTIVES= ==http_gzip== syntax: http_gzip on|off default: on context: main description: switch the http compression ==http_gzip_prefer_gzip== syntax: http_gzip_prefer_gzip on|off default: on context: main description: sends gzip content to user agents who can accept both gzip and deflate content. ==http_gzip_prefer_deflate== syntax: http_gzip_prefer_deflate on|off default: on context: main description: sends deflate content to user agents who can accept both gzip and deflate content. If prefer_deflate and perfer_gzip are both on. deflate is higher priority than gzip. ==http_gzip_types== syntax: http_gzip_types [mime types] default: text/html context: main description: This directive set the MIME types list which need to be compressed. The types need be separated by ',' and there should not be any space between types. ==http_gzip_hash== syntax: http_gzip_hash memLevel default: 8 context: main description: The memlevel parameter specifies how much memory should be allocated for the internal compression state. memLevel=1 uses minimum memory but is slow and reduces compression ratio; memLevel=9 uses maximum memory for optimal speed. ==http_gzip_comp_level== syntax: http_gzip_comp_level level default: 9 context: main description: The compression level, between 1 and 9, where 1 is the least compression (fastest) and 9 is the most (slowest). ==http_gzip_min_length== syntax: http_gzip_min_length length default: 0 context: main description: Sets the minimum length of of the response that will be compressed. Responses shorter than this will not be compressed. Length is determined from the "Content-Length" header. ==http_gzip_window== syntax: http_gzip_window windowBits default: 15 context: main description: The windowBits parameter is the base two logarithm of the window size (the size of the history buffer). It should be in the range 8..15 for this version of the library. Larger values of this parameter result in better compression at the expense of memory usage. ==http_gzip_prealloc== syntax: http_gzip_prealloc size default: 256 KB context: main description: We preallocate a memory for zlib in one buffer (default: 256K), this decreases a number of malloc() and free() calls and also probably decreases a number of syscalls (sbrk()/mmap() and so on). =TODO= =LICENSE= Copyright (c) 2010, Netease Inc. ( http://www.netease.com ). This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License (version 2) as published by the Free Software Foundation. It is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. Questions/patches may be directed to Weibin Yao, email@example.com