Major Description
When a server process does not receive data, but only sends data, the
connection times out after idleTimeout, eventhough the connection is
not idle.
This issue turned out to be a problem for gerrit [1], when it's
connected to Jenkins [2] via zuul [3]. There, gerrit is using mina
sshd and is only sending data to zuul.
[1] http://code.google.com/p/gerrit/
[2] http://jenkins-ci.org/
[3] https://github.com/openstack-infra/zuul