Bug #18095 Updated: browser cant read zlib compressed output

ID: 18095 Updated by: bugzilla@cm51-210.liwest.at Reported By: bugzilla@cm51-210.liwest.at -Status: Feedback +Status: Closed Bug Type: Zlib Related Operating System: Linux 2.4.18 PHP Version: 4.0CVS-2002-07-01 New Comment: found out that this is a phpWiki bug. they do something like: if (function_exists('ob_gzhandler')) { ob_start('ob_gzhandler'); $this->_is_compressing_output = true; } which is imho really bad :-) thanks anyway for helping me finding the bug. Previous Comments: ------------------------------------------------------------------------ [2002-07-02 13:43:43] sr@php.net It seems that there are two issues: 1.) Why isn't zlib.output_compression = Off active? How do you set this? Via Apache-Config or php.ini? ini_set doesn't work for this option, please try setting it in php.ini, maybe there are some things wrong with the Apache2 config handling. 2.) Why does the Content-Encoding-Header vanish if chunked transfer encoding is used by Apache? Maybe this is an Apache 2 issue, too. Is it possible that you try this with Apache 1.3.26 so that we can localize this bug (if it's an Apache 2 thing or a general zlib bug)? Thank you! ------------------------------------------------------------------------ [2002-07-02 05:24:18] bugzilla@cm51-210.liwest.at looks like Content-Encoding: gzip is missing for some pages (?) ------------------------------------------------------------------------ [2002-07-02 05:20:03] bugzilla@cm51-210.liwest.at did a little debugging with socat: request: > GET /wiki/index.php?pagename=RecentChanges HTTP/1.1\r > Host: cm51-210.liwest.at:91\r > User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.1a+) Gecko/20020624\r > Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,video/x-mng,image/png,image/jpeg,image/gif;q=0.2,text /css,*/*;q=0.1\r > Accept-Language: en-us, en;q=0.50\r > Accept-Encoding: gzip, deflate, compress;q=0.9\r > Accept-Charset: ISO-8859-1, utf-8;q=0.66, *;q=0.66\r > Keep-Alive: 300\r > Connection: keep-alive\r response: < HTTP/1.1 200 OK\r < Date: Tue, 02 Jul 2002 11:13:10 GMT\r < Server: Apache/2.0.40-dev (Unix) mod_ssl/2.0.40-dev OpenSSL/0.9.6b PHP/4.3.0-dev\r < Accept-Ranges: bytes\r < X-Powered-By: PHP/4.3.0-dev\r < Set-Cookie: PHPSESSID=974cec260ca6ac776ff114bf0a1e2f08; path=/\r < Set-Cookie: WIKI_PREFS2=O%3A15%3A%22userpreferences%22%3A1%3A%7Bs%3A6%3A%22_prefs%22%3Ba%3A0%3A%7B%7D%7D; expires=Wed, 02-Jul-03 11:13:10 GMT ; path=/\r < Last-Modified: Sat, 29 Jun 2002 10:19:44 +0000\r < Transfer-Encoding: chunked\r < Content-Type: text/html; charset=iso-8859-1\r < \r < 3661\r < ..\b........@6..<?xml version="1.0" encoding="iso-8859-1"?> < <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" < "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> < <html xmlns="http://www.w3.org/1999/xhtml"> < <head> for other pages i get < HTTP/1.1 200 OK\r < Date: Tue, 02 Jul 2002 11:16:39 GMT\r < Server: Apache/2.0.40-dev (Unix) mod_ssl/2.0.40-dev OpenSSL/0.9.6b PHP/4.3.0-dev\r < Accept-Ranges: bytes\r < X-Powered-By: PHP/4.3.0-dev\r < Set-Cookie: WIKI_PREFS2=O%3A15%3A%22userpreferences%22%3A1%3A%7Bs%3A6%3A%22_prefs%22%3Ba%3A0%3A%7B%7D%7D; expires=Wed, 02-Jul-03 11:16:39 GMT ; path=/\r < Content-Encoding: gzip\r < Vary: Accept-Encoding\r < Content-Length: 12914\r < Content-Type: text/html; charset=iso-8859-1\r < \r < ..\b........Q2..<?xml version="1.0" encoding="iso-8859-1"?> < <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" < "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> < <html xmlns="http://www.w3.org/1999/xhtml"> < <head> Transfer-Encoding / Content-Encoding ???? ------------------------------------------------------------------------ [2002-07-02 04:24:13] bugzilla@cm51-210.liwest.at zlib.output_compression Off zlib.output_compression_level 0 (http://cm51-210.liwest.at/info/) -> faulty gzheader is generated setting output compression to "0" & restarting -> in phpinfo, output compression stays "off", gzheader is generated again :-( i dont think that the correct content encoding header is generated ... trying to test that via netcat ------------------------------------------------------------------------ [2002-07-01 16:33:24] sr@php.net If you use 0 as zlib.ouput_compression_level, the output isn't compressed, but the gzip/deflate headers are added to the output (and the corresponding Content-Encoding header). Can you check with a phpinfo()-page that zlib.output_compression really is set to "off" (otherwise try setting it to "0")? I can't reproduce the binary display with your example URL, it works with Mozilla 1.0 and lynx, if I make the HTTP by hand, it displays the correct headers. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/18095 -- Edit this bug report at http://bugs.php.net/?id=18095&edit=1