'java.net.SocketException: Write failed: Broken pipe exception' in the MCS application logs

Symptom

Example Scenario: User hits the update button and closes the browser while the application is calculating. The exception is thrown because the browser is missing when it is time to display the results.

This exception is seen in the Multi Channel Selling (MCS) application logs intermittently. 'Broken pipe' errors usually occur when the browser is closed before the request can be completed. They are harmless. There are various reasons, but the most common being a browser session being closed while the request is still processing.

Error Message

2009.12.10 15:38:05:853 Env/[ACTIVE] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)':INFO:UserPropertyMgr Invalid user property for storefront 99 property userCartMode

java.net.SocketException: Write failed: Broken pipe
at jrockit.net.SocketNativeIO.writeBytesPinned(Native Method)
at jrockit.net.SocketNativeIO.socketWrite(SocketNativeIO.java:45)
at java.net.SocketOutputStream.socketWrite0(SocketOutputStream.java)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at weblogic.servlet.internal.ChunkOutput.writeChunkTransfer(ChunkOutput.java:525)
at weblogic.servlet.internal.ChunkOutput.writeChunks(ChunkOutput.java:504)
at weblogic.servlet.internal.ChunkOutput.flush(ChunkOutput.java:382)
at weblogic.servlet.internal.CharsetChunkOutput.flush(CharsetChunkOutput.java:249)
at weblogic.servlet.internal.ChunkOutputWrapper.flush(ChunkOutputWrapper.java:164)
at weblogic.servlet.internal.ServletOutputStreamImpl.flush(ServletOutputStreamImpl.java:113)
at weblogic.servlet.internal.WLOutputStreamWriter.flush(WLOutputStreamWriter.java:160)
at weblogic.servlet.internal.DelegateChunkWriter.flush(DelegateChunkWriter.java:132)
at weblogic.servlet.internal.ChunkOutputWrapper.flush(ChunkOutputWrapper.java:164)
at weblogic.servlet.jsp.JspWriterImpl.flush(JspWriterImpl.java:73)
at jsp_servlet._web_45_inf._web._en._gb._enterprisemgr._home.__homedata._jspService (__homedata.java:1290)
at com.comergent.dcm.core.BaseJSP.service(BaseJSP.java:61)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:226)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:124)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at com.comergent.dcm.core.filters.ComergentFilter.doFilter(ComergentFilter.java:50)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at com.comergent.dcm.core.filters.ComergentFilter.doFilter(ComergentFilter.java:50)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at com.comergent.dcm.core.filters.ComergentFilter.doFilter(ComergentFilter.java:50)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:526)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:261)
at com.comergent.dcm.core.ComergentDispatcher.forward(ComergentDispatcher.java:70)
at com.comergent.dcm.caf.controller.ForwardController.callJSP(ForwardController.java:76)
2009.12.10 15:38:05:855 Env/[ACTIVE] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)':INFO:ComergentDispatcher < JSP.forward /WEB-INF/web/en/GB/enterpriseMgr/home/HomeData.jsp alloc=0</p>