WARNING - Connector: Caught IOException while trying to write data to a client connection: null

Hi,

Question has been asked several times, but no answer was provided. We still get these warnings in our logs on a daily (hourly) basis though and are really interested in finding out why. Does this potentially indicate network issues? Or client PC related?

2016-11-03 15:43:58.232 WARNING - Connector: Caught IOException while trying to write data to a client connection: null

2016-11-03 15:43:58.232 WARNING - Connector: org.eclipse.jetty.io.EofException

at org.eclipse.jetty.http.HttpGenerator.flushBuffer(HttpGenerator.java:952)

at org.eclipse.jetty.http.AbstractGenerator.blockForOutput(AbstractGenerator.java:518)

at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:182)

at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:101)

at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1720)

at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1696)

at org.apache.commons.io.IOUtils.copy(IOUtils.java:1671)

at com.mendix.externalinterface.connector.FileRequestHandler.sendDocument(FileRequestHandler.java:410)

at com.mendix.externalinterface.connector.FileRequestHandler.doDownload(FileRequestHandler.java:216)

at com.mendix.externalinterface.connector.FileRequestHandler.handleDownload(FileRequestHandler.java:198)

at com.mendix.externalinterface.connector.FileRequestHandler.handleRequest(FileRequestHandler.java:86)

at com.mendix.externalinterface.connector.FileRequestHandler.processRequest(FileRequestHandler.java:77)

at com.mendix.externalinterface.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:74)

at com.mendix.core.MxRuntime.processRequest(MxRuntime.java:905)

at com.mendix.m2ee.server.handler.RuntimeHandler.handle(RuntimeHandler.java:45)

at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)

at org.eclipse.jetty.server.Server.handle(Server.java:351)

at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:454)

at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:890)

at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:944)

at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:634)

at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230)

at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:77)

at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)

at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)

at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)

at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)

at java.lang.Thread.run(Thread.java:745)

Caused by: java.io.IOException: An established connection was aborted by the software in your host machine

at sun.nio.ch.SocketDispatcher.write0(Native Method)

at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:51)

at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)

at sun.nio.ch.IOUtil.write(IOUtil.java:65)

at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:487)

at org.eclipse.jetty.io.nio.ChannelEndPoint.flush(ChannelEndPoint.java:312)

at org.eclipse.jetty.io.nio.SelectChannelEndPoint.flush(SelectChannelEndPoint.java:344)

at org.eclipse.jetty.http.HttpGenerator.flushBuffer(HttpGenerator.java:891)