[AXIS2-5533] NPE Thrown When Enabling the UDP Listener Globally

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: UDP transport
• Assignee: Unassigned
• Reporter: Hiranya Kasub Jayathilaka
• Created: 20/May/10 10:50
• Updated: 20/Feb/16 20:20

Description

Steps to reproduce:

1. Enable the UDP listener in the axis2.xml by adding the following entry:

<transportReceiver name="udp" class="org.apache.axis2.transport.udp.UDPListener">
<parameter name="transport.udp.port">9999</parameter>
<parameter name="transport.udp.contentType">text/xml</parameter>
</transportReceiver>

2. Start the server and following NPE will be thrown:

2010-05-20 16:02:43,890 [-] [main] ERROR ListenerManager Couldn't initialize the udptransport listener
java.lang.NullPointerException
at org.apache.axis2.transport.base.datagram.AbstractDatagramTransportListener.startEndpoint(AbstractDatagramTransportListener.java:75)
at org.apache.axis2.transport.base.datagram.AbstractDatagramTransportListener.startEndpoint(AbstractDatagramTransportListener.java:31)
at org.apache.axis2.transport.base.AbstractTransportListenerEx.init(AbstractTransportListenerEx.java:58)
at org.apache.axis2.transport.base.datagram.AbstractDatagramTransportListener.init(AbstractDatagramTransportListener.java:41)
at org.apache.axis2.engine.ListenerManager.init(ListenerManager.java:83)
at samples.util.SampleAxis2ServerManager.start(SampleAxis2ServerManager.java:110)
at samples.util.SampleAxis2Server.startServer(SampleAxis2Server.java:61)
at samples.util.SampleAxis2Server.main(SampleAxis2Server.java:40)

I was able to reproduce this issue with Synapse and the sample Axis2 server that comes with Synapse. I will soon attach a patch.