diff --git a/mercurial/httppeer.py b/mercurial/httppeer.py
--- a/mercurial/httppeer.py
+++ b/mercurial/httppeer.py
@@ -728,6 +728,8 @@
         if not self._responsef:
             return
 
+        # TODO ^C here may not result in immediate program termination.
+
         try:
             self._responsef.result()
         finally: