diff -r e405bcbf761c Lib/http/client.py
--- a/Lib/http/client.py	Mon Jul 21 19:20:06 2014 +0200
+++ b/Lib/http/client.py	Mon Jul 21 16:31:08 2014 -0700
@@ -894,6 +894,9 @@
             if line in (b'\r\n', b'\n', b''):
                 break
 
+            if self.debuglevel >= 0:
+                print('header:', line)
+
     def connect(self):
         """Connect to the host and port specified in __init__."""
         self.sock = self._create_connection((self.host,self.port),