Fix for #167

2 files changed, 4 insertions, 1 deletions

diff --git a/docs/news.txt b/docs/news.txt
index bc71326..66e7343 100644
--- a/docs/news.txt
+++ b/docs/news.txt
@@ -23,6 +23,9 @@ svn trunk
   objects.  Useful if you want to search through the effective history
   of a stacked object.
 
+* Fixed infinite recursion problem with
+  ``paste.request.EnvironHeaders.keys()``.
+
 1.3
 ---
 
diff --git a/paste/request.py b/paste/request.py
index 29c92bf..f55ad3d 100644
--- a/paste/request.py
+++ b/paste/request.py
@@ -368,7 +368,7 @@ class EnvironHeaders(DictMixin):
                 yield name
 
     def keys(self):
-        return list(self)
+        return list(iter(self))
 
     def __contains__(self, item):
         return self._trans_name(item) in self.environ