Receiving "ISPN004017: Could not fetch transport" When Setting Up Externalized HTTP Sessions

Issue

• We're receiving the following error when setting up externalized HTTP sessions with JDG and EAP:

ERROR [org.infinispan.client.hotrod.impl.transport.tcp.TcpTransportFactory] (ServerService Thread Pool -- 60) ISPN004017: Could not fetch transport: org.infinispan.client.hotrod.exceptions.TransportException:: java.net.SocketTimeoutException
    at org.infinispan.client.hotrod.impl.transport.tcp.TcpTransport.readByte(TcpTransport.java:184)
    at org.infinispan.client.hotrod.impl.protocol.Codec10.readHeader(Codec10.java:85)
    at org.infinispan.client.hotrod.impl.operations.HotRodOperation.readHeaderAndValidate(HotRodOperation.java:78)
    at org.infinispan.client.hotrod.impl.operations.PingOperation.execute(PingOperation.java:66)
    at org.infinispan.client.hotrod.impl.transport.tcp.TransportObjectFactory.ping(TransportObjectFactory.java:74)
    at org.infinispan.client.hotrod.impl.transport.tcp.TransportObjectFactory.makeObject(TransportObjectFactory.java:67)
    at org.infinispan.client.hotrod.impl.transport.tcp.TransportObjectFactory.makeObject(TransportObjectFactory.java:38)
    at org.apache.commons.pool.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:1220)
    at org.infinispan.client.hotrod.impl.transport.tcp.TcpTransportFactory.borrowTransportFromPool(TcpTransportFactory.java:270)
    at org.infinispan.client.hotrod.impl.transport.tcp.TcpTransportFactory.getTransport(TcpTransportFactory.java:149)
    at org.infinispan.client.hotrod.impl.operations.FaultTolerantPingOperation.getTransport(FaultTolerantPingOperation.java:44)
    at org.infinispan.client.hotrod.impl.operations.RetryOnFailureOperation.execute(RetryOnFailureOperation.java:67)
    at org.infinispan.client.hotrod.impl.RemoteCacheImpl.ping(RemoteCacheImpl.java:446)
    at org.infinispan.client.hotrod.RemoteCacheManager.ping(RemoteCacheManager.java:545)
    at org.infinispan.client.hotrod.RemoteCacheManager.createRemoteCache(RemoteCacheManager.java:526)
    at org.infinispan.client.hotrod.RemoteCacheManager.getCache(RemoteCacheManager.java:437)
    at org.infinispan.client.hotrod.RemoteCacheManager.getCache(RemoteCacheManager.java:433)
    at org.infinispan.loaders.remote.RemoteCacheStore.start(RemoteCacheStore.java:188)
    at org.infinispan.loaders.CacheLoaderManagerImpl.start(CacheLoaderManagerImpl.java:152)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_51]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_51]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_51]
    at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_51]
    at org.infinispan.util.ReflectionUtil.invokeAccessibly(ReflectionUtil.java:203)
    at org.infinispan.factories.AbstractComponentRegistry$PrioritizedMethod.invoke(AbstractComponentRegistry.java:886)
    at org.infinispan.factories.AbstractComponentRegistry.invokeStartMethods(AbstractComponentRegistry.java:657)
    at org.infinispan.factories.AbstractComponentRegistry.internalStart(AbstractComponentRegistry.java:646)
    at org.infinispan.factories.AbstractComponentRegistry.start(AbstractComponentRegistry.java:549)
    at org.infinispan.factories.ComponentRegistry.start(ComponentRegistry.java:217)
    at org.infinispan.CacheImpl.start(CacheImpl.java:582)
    at org.infinispan.manager.DefaultCacheManager.wireAndStartCache(DefaultCacheManager.java:686)
    at org.infinispan.manager.DefaultCacheManager.createCache(DefaultCacheManager.java:649)
    at org.infinispan.manager.DefaultCacheManager.getCache(DefaultCacheManager.java:545)
    at org.infinispan.manager.DefaultCacheManager.getCache(DefaultCacheManager.java:559)
    at org.jboss.as.clustering.infinispan.DefaultCacheContainer.getCache(DefaultCacheContainer.java:113)
    at org.jboss.as.clustering.infinispan.DefaultCacheContainer.getCache(DefaultCacheContainer.java:104)
    at org.jboss.as.clustering.infinispan.subsystem.CacheService.start(CacheService.java:78)
    at org.jboss.as.clustering.msc.AsynchronousService$1.run(AsynchronousService.java:86)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_51]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_51]
    at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_51]
    at org.jboss.threads.JBossThread.run(JBossThread.java:122)
Caused by: java.net.SocketTimeoutException
    at sun.nio.ch.SocketAdaptor$SocketInputStream.read(SocketAdaptor.java:229) [rt.jar:1.7.0_51]
    at sun.nio.ch.ChannelInputStream.read(ChannelInputStream.java:103) [rt.jar:1.7.0_51]
    at java.io.BufferedInputStream.fill(BufferedInputStream.java:235) [rt.jar:1.7.0_51]
    at java.io.BufferedInputStream.read(BufferedInputStream.java:254) [rt.jar:1.7.0_51]
    at org.infinispan.client.hotrod.impl.transport.tcp.TcpTransport.readByte(TcpTransport.java:179)
    ... 41 more