When running the integration tests based on Apache Karaf and Pax Exam, the tests will hand unless the local hostname resolves to 127.0.0.1 literally, ultimately producing this exception:
java.lang.RuntimeException: Cannot get the remote bundle context
at org.ops4j.pax.exam.rbc.client.intern.RemoteBundleContextClientImpl.getRemoteBundleContext(RemoteBundleContextClientImpl.java:255)
at org.ops4j.pax.exam.rbc.client.intern.RemoteBundleContextClientImpl.waitForState(RemoteBundleContextClientImpl.java:211)
at org.ops4j.pax.exam.karaf.container.internal.KarafTestContainer.waitForState(KarafTestContainer.java:607)
at org.ops4j.pax.exam.karaf.container.internal.KarafTestContainer.startKaraf(KarafTestContainer.java:241)
at org.ops4j.pax.exam.karaf.container.internal.KarafTestContainer.start(KarafTestContainer.java:181)
at org.ops4j.pax.exam.spi.reactors.EagerSingleStagedReactor.setUp(EagerSingleStagedReactor.java:86)
at org.ops4j.pax.exam.spi.reactors.EagerSingleStagedReactor.beforeClass(EagerSingleStagedReactor.java:136)
at org.ops4j.pax.exam.spi.reactors.ReactorManager.beforeClass(ReactorManager.java:448)
at org.ops4j.pax.exam.junit.impl.ProbeRunner.run(ProbeRunner.java:97)
at org.ops4j.pax.exam.junit.PaxExam.run(PaxExam.java:93)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:283)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:173)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:128)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:203)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:155)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
Caused by: java.rmi.ConnectException: Connection refused to host: 192.168.0.3; nested exception is:
java.net.ConnectException: Connection timed out (Connection timed out)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:619)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:342)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at org.ops4j.pax.exam.rbc.client.intern.RemoteBundleContextClientImpl.getRemoteBundleContext(RemoteBundleContextClientImpl.java:242)
at org.ops4j.pax.exam.rbc.client.intern.RemoteBundleContextClientImpl.waitForState(RemoteBundleContextClientImpl.java:211)
at org.ops4j.pax.exam.karaf.container.internal.KarafTestContainer.waitForState(KarafTestContainer.java:607)
at org.ops4j.pax.exam.karaf.container.internal.KarafTestContainer.startKaraf(KarafTestContainer.java:241)
at org.ops4j.pax.exam.karaf.container.internal.KarafTestContainer.start(KarafTestContainer.java:181)
at org.ops4j.pax.exam.spi.reactors.EagerSingleStagedReactor.setUp(EagerSingleStagedReactor.java:86)
at org.ops4j.pax.exam.spi.reactors.EagerSingleStagedReactor.beforeClass(EagerSingleStagedReactor.java:136)
at org.ops4j.pax.exam.spi.reactors.ReactorManager.beforeClass(ReactorManager.java:448)
at org.ops4j.pax.exam.junit.impl.ProbeRunner.run(ProbeRunner.java:97)
at org.ops4j.pax.exam.junit.PaxExam.run(PaxExam.java:93)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:283)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:173)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:128)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:203)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:155)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
Caused by: java.net.ConnectException: Connection timed out (Connection timed out)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at java.net.Socket.connect(Socket.java:538)
at java.net.Socket.<init>(Socket.java:434)
at java.net.Socket.<init>(Socket.java:211)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:148)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:342)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at org.ops4j.pax.exam.rbc.client.intern.RemoteBundleContextClientImpl.getRemoteBundleContext(RemoteBundleContextClientImpl.java:242)
at org.ops4j.pax.exam.rbc.client.intern.RemoteBundleContextClientImpl.waitForState(RemoteBundleContextClientImpl.java:211)
at org.ops4j.pax.exam.karaf.container.internal.KarafTestContainer.waitForState(KarafTestContainer.java:607)
at org.ops4j.pax.exam.karaf.container.internal.KarafTestContainer.startKaraf(KarafTestContainer.java:241)
at org.ops4j.pax.exam.karaf.container.internal.KarafTestContainer.start(KarafTestContainer.java:181)
at org.ops4j.pax.exam.spi.reactors.EagerSingleStagedReactor.setUp(EagerSingleStagedReactor.java:86)
at org.ops4j.pax.exam.spi.reactors.EagerSingleStagedReactor.beforeClass(EagerSingleStagedReactor.java:136)
at org.ops4j.pax.exam.spi.reactors.ReactorManager.beforeClass(ReactorManager.java:448)
at org.ops4j.pax.exam.junit.impl.ProbeRunner.run(ProbeRunner.java:97)
at org.ops4j.pax.exam.junit.PaxExam.run(PaxExam.java:93)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:283)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:173)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:128)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:203)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:155)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
I plan to introduce a check so to provide a better error.