ServerSocket.accept() is not interruptible: a thread busy in accept()
may not react to Thread.interrupt() and may not return from accept()
via an InterruptedException. Close the socket instead to make the
daemon's listener thread terminate.
* Close the listening socket to get the listening thread to exit
instead of interrupting it.
* Add a stopAndWait() method that stops the listening thread and
then waits until it has indeed finished.
* Set SO_REUSE_ADDRESS on the listening socket.
Bug: 376369
Change-Id: I9d6014103e6dcb0173daea134feb44dc52c5c69a
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>