The UDP transport implementation is in the Apache WS-Commons Transports project. The following classes implement the Axis2 transport listener and sender APIs respectively.
The axis2-transport-udp.jar archive file contains the above implementation classes.
To enable the UDP transport for samples, simply open the file repository/conf/axis2.xml in a text editor and add the following transport configurations.
<transportReceiver name="udp"/> <transportSender name="udp"/>
If you wish to use the sample Axis2 client to send UDP messages, you have to uncomment the UDP transport sender configuration in the samples/axis2Client/client_repo/conf/axis2.xml file.