From this forum thread: http://www.jppf.org/forums/index.php/topic,1626.0.html
In some environments, the checks on the network connections that allow the driver to detected that a node or client was disconnected generate false positves and cause an actual disconnection.
We propose to add a configuration property "jppf.nio.check.connection" to the server, to allow to disable these checks.
By default it is true (checks enabled). To disable the checks, its value should be set to false.