https://issues.apache.org/bugzilla/show_bug.cgi?id=46770
Summary: Headers are send duplicate
Product: Tomcat 5
Version: 5.5.27
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: Connector:AJP
AssignedTo: dev@tomcat.apache.org
ReportedBy: rainer.j...@kippdata.de
This is a regression between 5.5.25 (OK) and 5.5.26 (broken).
The same problem exists in 5.5.27 and in 5.5 trunk as of today.
It does not exist in 6.0.18.
I will attach a test case DoubleResponse.war. After deploying it, cou can
simply call /DoubleResponse/.
The code is contained in the war. It is simple and basically does:
response.setContentLength(0);
response.getOutputStream().print("");
response.flushBuffer();
This leads to sending the request headers twice when used with the AJP
connector (tested without APR). With HTTP it works.
You can observe the double sending by either sniffing between web server and
Tomcat, or setting JkLogLevel to debug.
Since mod_jk 1.2.27 we do no longer allow duplicate header sending.
I increased the log level of some connector packages. One can see a duplicate
COMMIT block in the attached log lines. To make the analysis easier I added
output of the method stack for some of those lines. Both logs are attached.
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