New version have a server that can handle hole punching. Have removed auto full mesh on PeerToPeer. Connecting between Peers must be done manually from now on.
To use maven just add this to your pom.xml file.
<dependency>
<groupId>net.corpwar.lib</groupId>
<artifactId>corpnet</artifactId>
<version>1.8.0</version>
</dependency>