diff --git a/utils/asleep.py b/utils/asleep.py
new file mode 100644
index 0000000..295f675
--- /dev/null
+++ b/utils/asleep.py
@@ -0,0 +1,28 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from twisted.internet import reactor
+from twisted.internet.defer import Deferred
+
+
+def asleep(dt):
+    """
+    Async (event driven) wait for given time period (in seconds)
+    :param dt: Delay in seconds
+    :return: Deferred to be fired with value None when time expires.
+    """
+    d = Deferred()
+    reactor.callLater(dt, lambda: d.callback(None))
+    return d
\ No newline at end of file