https://bz.apache.org/bugzilla/show_bug.cgi?id=64379
Bug ID: 64379
Summary: Getting old buffer + header + correct response
Product: Apache httpd-2
Version: 2.4.18
Hardware: PC
OS: Linux
Status: NEW
Severity: critical
Priority: P2
Component: mod_proxy
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
UBUNTU RELEASE
Description: Ubuntu 16.04.3 LTS
Release: 16.04
APACHE2 VERSION
apache2:
Installed: 2.4.18-2ubuntu3.14
Candidate: 2.4.18-2ubuntu3.14
Version table:
*** 2.4.18-2ubuntu3.14 500
500 http://ubuntu.apt-get.eu/ubuntu xenial-updates/main amd64 Packages
100 /var/lib/dpkg/status
2.4.18-2ubuntu3.13 500
500 http://security.ubuntu.apt-get.eu/ubuntu xenial-security/main amd64
Packages
2.4.18-2ubuntu3 500
500 http://ubuntu.apt-get.eu/ubuntu xenial/main amd64 Packages
WHAT I EXPECT TO HAPPEN
That a correct response is sent back, see below.
WHAT ACTUALLY HAPPENS
We have apache2 as a reverse proxy server, doing a lot of things: 4 Virtual
Hosts, several RewriteRules, SSL to a non-SSL internal (Domino) server, quite
some ProxyPass* lines, and a few Substitutes to fix links in returned HTML.
In 98% of all cases everything works, only, in 2% of the page requests the
browser gets the wrong response: it contains the homepage html, then the header
for the actual response, and then the correct response.
Here an extract of the middle part of the returned response, where two buffers
seem to be joined:
-----------------------------
XSP.addOnLoad(function() {
XSP.attachEvent("view:_id1:_id2:_id3:_id9:_id10:5:_id26:_id28:_id30",
"view:_id1:_id2:_id3:_id9:_id10:5:_id26:_id28:query", "onkeydown",
view__id1__id2__id3__id9__id10_5__id26__id28__id30_clientSide_onkeydown, false,
2);
XSP.attachEvent("view:_id1:_id2:_id3:_id9:_id10:5:_id26:_id28:_id31",
"view:_id1:_id2:_id3:_id9:_id10:5:_id26:_id28:btnSearch", "onclick",
view__id1__id2__id3__id9__id10_5__id26__id28__id31_clientSide_onclick, false,
0);
XSP.attachEvent("view:_id1:_id2:_id3:_id9:_id10:6:_id34:_id36:_id38",
"view:_id1:_id2:_id3:_id9:_id10:6:_id34:_id36:image1", "onclick",
view__id1__id2__id3__id9__id10_6__id34__id36__id38_clientSide_onclick, false,
2);
});
</script>
</body>
</html>HTTP/1.1 200 OK
Date: Fri, 24 Apr 2020 22:03:21 GMT
Content-Type: text/html;charset=UTF-8
Expires: -1
Content-Length: 72703
<!DOCTYPE html>
<html lang="en">
<head>
<base href="//www.website.nl/TA.nsf/Page.xsp/">
<title>Website</title>
<link rel="SHORTCUT ICON"
href="/website.nsf/images/favicon.ico/%24file/favicon.ico">
<meta name="viewport" content="width=device-width, initial-scale=1.0,
maximum-scale=4.0, user-scalable=yes">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Rubik";
src="" type=""></link>
<meta name="Description" content="info">
<link rel="stylesheet" type="text/css"
href="/xsp/.ibmxspres/.mini/css-1.9.7/@Da&@Ib&2Tfxsp.css&2TfxspLTR.css&2TfxspFF.css.css">
-----------------------------
The output comes from one single line in the Firefox 75.0 Developer Tools
window, on the Network tab.
The same happens every now and then on a page that regularly refreshes an image
on the screen. Usually (98%) the response is correct, but sometimes two
responses are combined into one and then the browser flips.
Needless to say maybe, but if I access the website directly, i.e. not through
the proxy server, there's no problem whatsoever, the response is always
correct.
Thank you for looking into this. If you need more info, please contact me by
mail.
PS I posted exactly the same bug report as
https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1874932
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