Fix close HTTP server explicitly when closing Bokeh server
This avoids a ResourceWarning with the HTTP server's listening socket(s).
@@ -189,6 +189,7 @@ class Server(object):
assert not self._stopped, "Already stopped"
self._stopped = True
self._tornado.stop(wait)
+ self._http.stop()
def run_until_shutdown(self):
''' Run the Bokeh Server until shutdown is requested by the user,
