NO-JIRA: ensure requests are sent as strings with python 2
diff --git a/examples/python/sync_client.py b/examples/python/sync_client.py
index 95a5650..0b7b045 100755
--- a/examples/python/sync_client.py
+++ b/examples/python/sync_client.py
@@ -23,7 +23,7 @@
 (also known as RPC or Remote Procecure Call) using proton.
 
 """
-from __future__ import print_function
+from __future__ import print_function, unicode_literals
 
 import optparse
 from proton import Message, Url, ConnectionException, Timeout