Fix User-Agent for the xmlrpc.client, and catch KeyboardInterrupt for the standalone xmlrpc.server.
diff --git a/Misc/NEWS b/Misc/NEWS
index b9e447f..381ceae 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -347,6 +347,9 @@
 Library
 -------
 
+- Fix the xmlrpc.client user agent to return something similar to
+  urllib.request user agent: "Python-xmlrpc/3.3".
+
 - Issue #13293: Better error message when trying to marshal bytes using
   xmlrpc.client.