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From bugzi...@apache.org
Subject [Bug 51350] mod_deflate compresses zero length content into an invalid 20 byte body
Date Fri, 10 Jun 2016 09:10:39 GMT
https://bz.apache.org/bugzilla/show_bug.cgi?id=51350

Dmitry Gres <dm.gres@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #4 from Dmitry Gres <dm.gres@gmail.com> ---
Still occurs.

When apache returns a gzip compressed response with 204 response code and empty
body server returns invalid header Content-Length: 20 instead of
Content-Length: 0.

Without gzip compression (without Accept-Encoding header in request) server
returns valid header Content-Length: 0.

Request and response with compression:

0 % curl -v http://mta.dev/api/wtf/\?id\=09102 --compressed
* Hostname was NOT found in DNS cache
*   Trying 172.17.0.2...
* Connected to mta.dev (172.17.0.2) port 80 (#0)
> GET /api/wtf/?id=09102 HTTP/1.1
> User-Agent: curl/7.38.0
> Host: mta.dev
> Accept: */*
> Accept-Encoding: deflate, gzip
> 
< HTTP/1.1 204 No Content
< Date: Thu, 09 Jun 2016 15:44:53 GMT
* Server Apache/2.4.7 (Ubuntu) is not blacklisted
< Server: Apache/2.4.7 (Ubuntu)
< X-Powered-By: PHP/5.5.9-1ubuntu4.17
< P3P: policyref="/bitrix/p3p.xml", CP="NON DSP COR CUR ADM DEV PSA PSD OUR UNR
BUS UNI COM NAV INT DEM STA"
< X-Powered-CMS: Bitrix Site Manager (d04cd2b3dbab106e7537af3767043172)
< Set-Cookie: PHPSESSID=8arlnd14t1k97bri56clb2qhh1; path=/; HttpOnly
< Expires: Thu, 19 Nov 1981 08:52:00 GMT
< Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
< Pragma: no-cache
< Set-Cookie: BITRIX_SM_GUEST_ID=2328047; expires=Sun, 04-Jun-2017 15:44:53
GMT; Max-Age=31104000; path=/
< Set-Cookie: BITRIX_SM_LAST_VISIT=09.06.2016+18%3A44%3A53; expires=Sun,
04-Jun-2017 15:44:53 GMT; Max-Age=31104000; path=/
< Content-Encoding: gzip
< Content-Length: 20
< Content-Type: application/json
< 
* Excess found in a non pipelined read: excess = 20 url = /api/wtf/?id=09102
(zero-length body)
* Connection #0 to host mta.dev left intact


Request and response without compression:

0 % curl -v http://mta.dev/api/wtf/\?id\=09102
* Hostname was NOT found in DNS cache
*   Trying 172.17.0.2...
* Connected to mta.dev (172.17.0.2) port 80 (#0)
> GET /api/wtf/?id=09102 HTTP/1.1
> User-Agent: curl/7.38.0
> Host: mta.dev
> Accept: */*
> 
< HTTP/1.1 204 No Content
< Date: Thu, 09 Jun 2016 15:38:43 GMT
* Server Apache/2.4.7 (Ubuntu) is not blacklisted
< Server: Apache/2.4.7 (Ubuntu)
< X-Powered-By: PHP/5.5.9-1ubuntu4.17
< P3P: policyref="/bitrix/p3p.xml", CP="NON DSP COR CUR ADM DEV PSA PSD OUR UNR
BUS UNI COM NAV INT DEM STA"
< X-Powered-CMS: Bitrix Site Manager (d04cd2b3dbab106e7537af3767043172)
< Set-Cookie: PHPSESSID=ceqsuv4ie3fkq497uvk6e2gki1; path=/; HttpOnly
< Expires: Thu, 19 Nov 1981 08:52:00 GMT
< Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
< Pragma: no-cache
< Set-Cookie: BITRIX_SM_GUEST_ID=2328047; expires=Sun, 04-Jun-2017 15:38:43
GMT; Max-Age=31104000; path=/
< Set-Cookie: BITRIX_SM_LAST_VISIT=09.06.2016+18%3A38%3A43; expires=Sun,
04-Jun-2017 15:38:43 GMT; Max-Age=31104000; path=/
< Content-Length: 0
< Content-Type: application/json
< 
* Connection #0 to host mta.dev left intact

Apache version - 2.4.7

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