test_20161222

Sample configuration to reproduce crash in mod_proxy_ajp in HTTPD 2.4.25.

License: Apache License 2.0
See files Apache24/LICENSE.txt, Tomcat7/LICENSE

Prerequisites

1. As written at [http://www.apachelounge.com/download/]:

   Be sure that you have installed the latest C++ Redistributable for Visual Studio 2015: vc_redist_x64/86.exe.

   https://www.microsoft.com/en-us/download/details.aspx?id=53840 (Microsoft Visual C++ 2015 Redistributable Update 3)

2. Tomcat needs a Java Runtime.

   I am using Oracle Java 8 JRE (8u112), 32-bit

Software

Software that is used here

• Apache24

  httpd-2.4.25-win32-VC14.zip from http://www.apachelounge.com/download/

  minus documentation, include headers, libraries

• Tomcat7

  apache-tomcat-7.0.73.zip from http://tomcat.apache.org/download-70.cgi

Configuration

1. In Apache24/conf/*, Apache24/conf/extra/*

   Replace all locations of C:/ with actual path of this directory, e.g. D:/test_20161222/

2. In Apache24/conf/httpd.conf

   Replace the following line:

   Listen 80
   

   with two lines:

   Listen 127.0.0.1:9090
   ServerName localhost
   

   to listen for local connections only, on port 9090 and to configure ServerName.

3. In Tomcat7/conf/server.xml

   In elements add address="127.0.0.1" to listen for local connections only.

4. In Apache24/conf/httpd.conf

   Uncomment the following lines to enable modules mod_proxy and mod_proxy_ajp:

   LoadModule proxy_module modules/mod_proxy.so
   LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
   

   Add the following lines to the end of the file to configure proxying for examples web application.

   ProxyRequests off ProxyPass ajp://127.0.0.1:8009/examples

5. Start the servers:

   See run.bat.

   Apache HTTPD:

   start "Apache" Apache24\bin\httpd.exe -w
   

   Apache Tomcat:

   set CATALINA_HOME=Tomcat7
   set "JAVA_HOME=C:\Program Files (x86)\Java\jre1.8.0_112"
   Tomcat7\bin\startup.bat
   

6. Start a web browser and try browsing the examples web application

   http://127.0.0.1:9090/examples/
   

   Visiting the root page and refreshing it (F5) is enough to trigger the issue.

7. Stop servers by closing their console windows (Ctrl+C).