[jboss-remoting-issues] [JBoss JIRA] Created: (JBREM-954) InterruptException should not be rethrown as CannotConnectionException

[Galder Zamarreno (JIRA)]

InterruptException should not be rethrown as CannotConnectionException
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                 Key: JBREM-954
                 URL: http://jira.jboss.com/jira/browse/JBREM-954
             Project: JBoss Remoting
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: transport
            Reporter: Galder Zamarreno
             Fix For: 2.2.2.SP4


Let's say you have a Swing GUI application that calls an EJB remotely and the 
client code is waiting to get entry to client side pool (controlled by clientMaxPoolSize). 
While waiting, the user decides to cancel the operation by interrupting the thread. In 
that case, the Remoting code does not make a difference between an InterruptedException 
and any other Exception:

MicroSocketClientInvoker.java:

protected SocketWrapper getConnection(Marshaller marshaller,
                                         UnMarshaller unmarshaller,
                                         int timeAllowed)
   throws Exception
{
   long start = System.currentTimeMillis();
   long timeToWait = (timeAllowed > 0) ? timeAllowed : 30000;
   boolean timedout = !semaphore.attempt(timeToWait);

Any Exception thrown from getConnection() is treated as a CannotConnectException

         try
         {
            socketWrapper = getConnection(marshaller, unmarshaller, timeLeft);
         }
         catch (Exception e)
         {
//            if (bailOut)
//               return null;
            semaphore.release();
            if (trace) log.trace(this + " released semaphore: " + semaphore.permits());
            throw new CannotConnectException(
               "Can not get connection to server. Problem establishing " +
               "socket connection for " + locator, e);
         }

The EJB3 layer wraps this in CannotConnectException in a RuntimeException like:

throw new RuntimeException("cluster invocation failed, last exception was: ", lastException);

This is misleading on the Remoting side. Semantically, the fact that the thread attempting 
to connect is interrupted shouldn't be translated into a CannotConnectException.

Please find attached a test case I've created.

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