A simple ejb testcase that has the bean method sleep for 90 seconds:

public void useCallerForAuth()
{
try
{
Thread.sleep(90*1000);

...

fails with a timeout from the transport layer.

java.net.SocketTimeoutException: Read timed out; nested exception is:
java.rmi.ConnectException: Failed to communicate. Problem during marshalling/unmarshalling; nested exception is:
java.net.SocketTimeoutException: Read timed out" type="java.rmi.ServerException">java.rmi.ServerException: Failed to communicate. Problem during marshalling/unmarshalling; nested exception is:
java.net.SocketTimeoutException: Read timed out; nested exception is:
java.rmi.ConnectException: Failed to communicate. Problem during marshalling/unmarshalling; nested exception is:
java.net.SocketTimeoutException: Read timed out
at org.jboss.invocation.unified.interfaces.UnifiedInvokerProxy.invoke(UnifiedInvokerProxy.java:118)
at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:96)
at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:46)
at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:55)
at org.jboss.proxy.ejb.StatelessSessionInterceptor.invoke(StatelessSessionInterceptor.java:97)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:87)
at $Proxy3.useCallerForAuth(Unknown Source)
at org.jboss.test.jca.test.SecurityContextUnitTestCase.testCallerIdentityPropagation(SecurityContextUnitTestCase.java:65)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at junit.extensions.TestDecorator.basicRun(TestDecorator.java:22)
at junit.extensions.TestSetup$1.protect(TestSetup.java:19)
at junit.extensions.TestSetup.run(TestSetup.java:23)
Caused by: java.rmi.ConnectException: Failed to communicate. Problem during marshalling/unmarshalling; nested exception is:
java.net.SocketTimeoutException: Read timed out
at org.jboss.remoting.transport.socket.SocketClientInvoker.transport(SocketClientInvoker.java:264)
at org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:116)
at org.jboss.remoting.Client.invoke(Client.java:197)
at org.jboss.invocation.unified.interfaces.UnifiedInvokerProxy.invoke(UnifiedInvokerProxy.java:102)
... 28 more
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:183)
at java.io.BufferedInputStream.read(BufferedInputStream.java:201)
at java.io.ObjectInputStream$PeekInputStream.peek(ObjectInputStream.java:2133)
at java.io.ObjectInputStream$BlockDataInputStream.peek(ObjectInputStream.java:2423)
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2433)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1245)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
at org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:35)
at org.jboss.invocation.unified.marshall.InvocationUnMarshaller.read(InvocationUnMarshaller.java:31)
at org.jboss.remoting.transport.socket.SocketClientInvoker.transport(SocketClientInvoker.java:242)
... 31 more

Basic configuration settings like timeout, port, bind address, socket factories, etc. need to be made manifest in the conf/jboss-service.xml with the attributes/config commented out if needed so that its simple to update these settings.