I am also having the same problem. I get connection refused. I have already created a support ticket with CA and they had provided me a patch. But after applying the patch, all ports in the VSE got blocked, so took out the patch file and after rebooting our Linux server, the services are back. But services are still becoming unresponsive randomly.
VSE.log has the below error when services stops responding:
| java.util.ConcurrentModificationException
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| Step: Virtual HTTPS Listener 8001
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| Trapped Exception: null
| Trapped Message: java.util.ConcurrentModificationException
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STACK TRACE
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
at java.util.ArrayList$Itr.next(ArrayList.java:851)
at com.itko.lisa.vse.http.TextHTTPServer.getEndpoint(TextHTTPServer.java:292)
at com.itko.lisa.vse.http.TextHTTPServer.getNextTransaction(TextHTTPServer.java:243)
at com.itko.lisa.vse.stateful.protocol.http.HttpListenStep.execute(HttpListenStep.java:535)
at com.itko.lisa.test.TestNode.executeNode(TestNode.java:984)
at com.itko.lisa.test.TestCase.execute(TestCase.java:1297)
at com.itko.lisa.test.TestCase.execute(TestCase.java:1198)
at com.itko.lisa.test.TestCase.executeNextNode(TestCase.java:1183)
at com.itko.lisa.test.TestCase.executeTest(TestCase.java:1124)
at com.itko.lisa.coordinator.Instance.run(Instance.java:208)
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