[1.2.4] Random errors in Play project hosted on TomCat: exception ClientAbortException: null

[Adis]

Hi, 

I have posted my question on StackOverflow, but I do not get much information or suggestion to solve or research my error, perhaps anyone here can help or provide assitence?

I have a sample project hosted on the tomcat 5.5 server, that uses JDBC to connect to a MSSQL R2 database. But randomly and quite often I get a ClientAbortException and my application crashes. What can I do? Debugging does not help since I cannot reproduce the errors:

• Play version : 1.2.3 and 1.2.4 (on both version the errors occur)
• Machine: Windows Server 2003 and 2008

Stack trace ERROR ~

@698gd0b9n
Internal Server Error (500)

Oops: ClientAbortException
An unexpected error occured caused by exception ClientAbortException: null

play.exceptions.UnexpectedException: Unexpected Error
    at play.Invoker$Invocation.onException(Invoker.java:244)
    at play.Invoker$Invocation.run(Invoker.java:286)
    at play.server.ServletWrapper$ServletInvocation.run(ServletWrapper.java:548)
    at play.Invoker.invokeInThread(Invoker.java:68)
    at play.server.ServletWrapper.service(ServletWrapper.java:142)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:879)
    at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
    at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
    at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
    at java.lang.Thread.run(Thread.java:619)
Caused by: ClientAbortException:  java.net.SocketException: Connection reset by peer: socket write error
    at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:370)
    at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:352)
    at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:396)
    at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:385)
    at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89)
    at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:83)
    at play.server.ServletWrapper.copyResponse(ServletWrapper.java:493)
    at play.server.ServletWrapper$ServletInvocation.execute(ServletWrapper.java:558)
    at play.Invoker$Invocation.run(Invoker.java:278)
    ... 18 more
Caused by: java.net.SocketException: Connection reset by peer: socket write error
    at java.net.SocketOutputStream.socketWrite0(Native Method)
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
    at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:751)
    at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432)
    at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:347)
    at org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:774)
    at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:118)
    at org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:584)
    at org.apache.coyote.Response.doWrite(Response.java:560)
    at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:365)
    ... 26 more

Can anyone tell me where to look?

[Adis]

I can reproduce this error in the log when holding down the F5 button? But I do not know why my request at Play side are the aborted and not executed at all?? :-(

For your information: I have a Ext JS application that need 3 stores. These store are filled by making a request to my Play Server and the data is being retrieved from the database and send back.

But when the above error occurs, one or all requests do not retrieve the data back and I end up with a white screen?...