I am also experiencing the same issue every time i install dcm4chee. I have installed dcm4chee version 2.18.3 on Ubuntu 14.04 as well as previous versions and continue to run into this issue.
The dcm4chee localhost entry passes both pings and echos, and I can use that entry to send a patient from dcm4chee to itself. I am also able to send from a dicom server (Velocity in this case) to dcm4chee and the file ends up in dcm4chee database. Velocity can also send to itself, so it is listening with the AE title and port provided to dcm4chee in the AE entry. I can test this dcm4chee AE entry to Velocity with a successful ping, but an echo fails. It seems to go back and forth between instantly failing:
dcm4chee can ping itself using localhost and send to itself (I can see the files coming across in the log)
dcm4chee CANNOT echo or send to velocity, or any other dicom server. but it can ping the IP.
java.io.IOException: Failed to establish Association aet:TESTDB
at org.dcm4chee.web.service.common.AbstractScuService.open(AbstractScuService.java:282)
at org.dcm4chee.web.service.echo.EchoService.echo(EchoService.java:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at org.dcm4chee.web.war.ae.delegate.EchoDelegate.echo(EchoDelegate.java:64)
at org.dcm4chee.web.war.ae.DicomEchoWindow$DicomEchoPage.doEcho(DicomEchoWindow.java:267)
at org.dcm4chee.web.war.ae.DicomEchoWindow$DicomEchoPage.onBeforeRender(DicomEchoWindow.java:260)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.Component.prepareForRender(Component.java:2297)
at org.apache.wicket.Page.prepareForRender(Page.java:1545)
at org.apache.wicket.Component.prepareForRender(Component.java:2329)
at org.apache.wicket.Page.renderPage(Page.java:912)
at org.apache.wicket.request.target.component.PageRequestTarget.respond(PageRequestTarget.java:63)
at org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:105)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1287)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1358)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1465)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:319)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:420)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
at java.lang.Thread.run(Thread.java:662)