Stress-testing the client

[Greg Weinger]

I have found a very peculiar behavior when heavily stressing the Axis client library.    After around 950 consecutive calls, I start to get a “java.net.ConnectException: Operation timed out: connect”    The strange thing is that the service side is fine.  If I stop the client and run it again, it performs normally.  If I run a new client *while the original is still failing* the new one performs normally.  The problem therefore seems tied to the running instance of the VM.  I get the same exact behavior when I run Apache SOAP client code as well.  Here’s the best part: sometimes the problem fixes itself if I leave the client running long enough.   What is going on here?  Has anyone seen anything like this?   On the client side I am using jdk1.3_02, and the most recent Axis code.  The server is using Apache SOAP.  My next step is to try another JDK version.        Dump String: AxisFault  faultCode: http://xml.apache.org/axis/:Server.userException  faultString: java.net.ConnectException: Operation timed out: connect  faultActor: null  faultDetail:         stackTrace: java.net.ConnectException: Operation timed out: connect         at java.net.PlainSocketImpl.socketConnect(Native Method)         at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:320)         at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:133)         at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:120)         at java.net.Socket.<init>(Socket.java:273)         at java.net.Socket.<init>(Socket.java:100)         at org.apache.axis.transport.http.HTTPSender.invoke(Unknown Source)         at org.apache.axis.strategies.InvocationStrategy.visit(Unknown Source)         at org.apache.axis.SimpleChain.doVisiting(Unknown Source)         at org.apache.axis.SimpleChain.invoke(Unknown Source)         at org.apache.axis.client.AxisClient.invoke(Unknown Source)         at org.apache.axis.client.Call.invoke(Unknown Source)         at org.apache.axis.client.Call.invoke(Unknown Source)         at org.apache.axis.client.Call.invoke(Unknown Source)         at RetrieveDocsAx$XMLDocIndex.startElement(RetrieveDocsAx.java:170)         at org.apache.xerces.parsers.SAXParser.startElement(SAXParser.java:1376)           at org.apache.xerces.validators.common.XMLValidator.callStartElement(XML Validator.java:1284)         at org.apache.xerces.framework.XMLDocumentScanner.scanElement(XMLDocumen tScanner.java:1806)         at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.disp atch(XMLDocumentScanner.java:1182)         at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentS canner.java:381)         at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1098)         at RetrieveDocsAx.retrieveDocuments(RetrieveDocsAx.java:77)         at RetrieveDocsAx.main(RetrieveDocsAx.java:256)   Thanks, Gregory Weinger UCLA Telemedicine