Retry socket.timeout as well as SSL timeouts (ssl.SSLError is a subclass of socket.error).

rietveld.py

Index: rietveld.py
diff --git a/rietveld.py b/rietveld.py
index c24ba4d3c2872508ce3d8453ea3e7fe8906bd7bd..57d7fd624bf476c691d77f79d876e1e267727fb8 100644
--- a/rietveld.py
+++ b/rietveld.py
@@ -442,7 +442,7 @@ class Rietveld(object):
               ):
             # Usually internal GAE flakiness.
             raise
-        except ssl.SSLError, e:
+        except socket.error, e:
           if retry >= (self._maxtries - 1):
             raise
           if not 'timed out' in str(e):