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From André Warnier ...@ice-sa.com>
Subject Re: Tomcat + apache + mod_jk
Date Thu, 24 Mar 2011 15:15:31 GMT
Hi.

The schema is :

a) request :

browser -(1)-> (apache + mod_jk) --(2)--> tomcat + app.

b) response :

browser <-(1)-- (apache + mod_jk) <--(2)-- tomcat + app.

So let's say that the browser sends the request, over connection (1), to apache.
apache creates connection (2) to tomcat, sends the request, and waits for the response.
tomcat starts sending the response, which apache reads on connection (2), and starts 
forwarding it to the browser over connection (1).
But, for some reason, connection (1) closes (the user closes the browser or the window, or

whatever).  Apache would sense that, since it cannot write anymore to connection (1).
And it would (probably) close connection (2) then.
So tomcat, when it tries to send the next response part back to apache, would find a 
closed connection (2), and complain.

I don't know if the message below is exactly that case, but maybe it explains why other 
people told you that it could be a network problem.  It is not a problem directly of 
connection (2), but on connection (1), just reflected by apache to connection (2).





AReid@bca-group.com wrote:
> For the first time we have received this error (many times). Looks to me 
> like tomcat cannot talk to apache to me. Can anyone shed any light on 
> this?
> 
> Windows Server 2003
> Tomcat:  6.0.16
> Apache: 2.2
> JDK: 1.6.0_23
> 
>  Tomcat and Apache on same box so I don't see how it can be a network 
> issue as some forums are suggesting.
> 
> Thanks
> 
> 
> 
> 24-Mar-2011 13:25:02 org.apache.jk.core.MsgContext action
> WARNING: Error sending end packet
> java.net.SocketException: Software caused connection abort: socket write 
> error
>         at java.net.SocketOutputStream.socketWrite0(Native Method)
>         at 
> java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
>         at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
>         at org.apache.jk.common.ChannelSocket.send(ChannelSocket.java:531)
>         at 
> org.apache.jk.common.JkInputStream.endMessage(JkInputStream.java:121)
>         at org.apache.jk.core.MsgContext.action(MsgContext.java:304)
>         at org.apache.coyote.Response.action(Response.java:183)
>         at org.apache.coyote.Response.finish(Response.java:305)
>         at 
> org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:195)
>         at 
> org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)
>         at 
> org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767)
>         at 
> org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697)
>         at 
> org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889)
>         at 
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
>         at java.lang.Thread.run(Thread.java:662)
> 24-Mar-2011 13:25:02 org.apache.jk.common.ChannelSocket processConnection
> WARNING: processCallbacks status 2
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