1 files changed, 7 insertions, 1 deletions
diff --git a/Lib/urllib/request.py b/Lib/urllib/request.py
index 5ddec5f14e9..d389fa9799d 100644
--- a/Lib/urllib/request.py
+++ b/Lib/urllib/request.py
@@ -1255,6 +1255,12 @@ class AbstractHTTPHandler(BaseHandler):
             raise URLError(err)
         else:
             r = h.getresponse()
+            # If the server does not send us a 'Connection: close' header,
+            # HTTPConnection assumes the socket should be left open. Manually
+            # mark the socket to be closed when this response object goes away.
+            if h.sock:
+                h.sock.close()
+                h.sock = None
 
         r.url = req.get_full_url()
         # This line replaces the .msg attribute of the HTTPResponse
@@ -1658,7 +1664,7 @@ class URLopener:
                 return getattr(self, name)(url)
             else:
                 return getattr(self, name)(url, data)
-        except HTTPError:
+        except (HTTPError, URLError):
             raise
         except socket.error as msg:
             raise IOError('socket error', msg).with_traceback(sys.exc_info()[2])