Karthik Nanjangude wrote:
Hi
Spec
Java 1.5
O/s : Linux
APP Server : JBOSS4.2.1 (Tomcat built with)
HTTP Server : apache_2.2.11 [ With out SSL ]
Mod library : mod_jk-1.2.28-httpd-2.2.X.so
LB 1 Apache : 1 JBOSS:Port of application
Question : Some times We have observed that on WEB Application ( click on
button in jsp )
Apache is sending 2 POST requests to underlying JBOSS ( Tomcat
server ).
Note: We even put a Java script filter to disable multiple Clicks for the page,
How we Observed : Via TCP Thread dump using command "tcpdump -i bond0 -s 1500 -w
/ tmp / test.pcap "
Can this configuration "worker.node1.socket_timeout=10" got any thing to do
with this multiple request activity?
Unlikely, but :
1) simple test : remove this setting, and see if the issue still appears (*)
(By removing the setting, you make the timeout infinite)
2) use the mod_jk logging level TRACE, to see exactly what mod_jk is sending to
Tomcat
3) It is unlikely that any Apache or mod_jk or Tomcat component would repeat a POST
request, because that kind of violates the HTTP RFC. So chances are, that the double POST
request is /still/ coming from the browser.
(*) do you have any particular reason to use this setting, instead of the default ? Or is
it just something you copied from some blog page ?
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