server can configure additional ports that will be sent to the client upon connection. These channels can be used to send messages in parallel to the normal messages. This is useful to keeping several separate command pathways flowing smoothly despite potentially large messages on one channel. git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@8938 75d07b2b-3a1a-0410-a2c5-0572b91ccdca