Send over amqp+nio transport block indefinitely

When trying to send a message to a topic over AMQP using QPid Java client example the operation block indefinitely if amqp+nio transport is configured on the ActiveMQ side. With amqp transport the operation succeeds.

The example program is executed with the following arguments:

java -cp lib/proton-api-0.5.jar:lib/proton-j-impl-0.5.jar:target/classes org.apache.qpid.proton.example.Send -a "amqp://127.0.0.1:5672/topic://test.foo" -s bar3255 'xxyyzz555'

The code can be found here:

http://svn.apache.org/repos/asf/qpid/proton/trunk/examples/messenger/java/src/main/java/org/apache/qpid/proton/example/Send.java