Imported Upstream version 1.8.3

1 files changed, 9 insertions, 5 deletions

diff --git a/urllib3/util/request.py b/urllib3/util/request.py
index d48d651..bfd7a98 100644
--- a/urllib3/util/request.py
+++ b/urllib3/util/request.py
@@ -7,7 +7,7 @@ ACCEPT_ENCODING = 'gzip,deflate'
 
 
 def make_headers(keep_alive=None, accept_encoding=None, user_agent=None,
-                 basic_auth=None, proxy_basic_auth=None):
+                 basic_auth=None, proxy_basic_auth=None, disable_cache=None):
     """
     Shortcuts for generating request headers.
 
@@ -29,8 +29,11 @@ def make_headers(keep_alive=None, accept_encoding=None, user_agent=None,
         auth header.
 
     :param proxy_basic_auth:
-        Colon-separated username:password string for 'proxy-authorization: basic ...'
-        auth header.
+        Colon-separated username:password string for
+        'proxy-authorization: basic ...' auth header.
+
+    :param disable_cache:
+        If ``True``, adds 'cache-control: no-cache' header.
 
     Example: ::
 
@@ -63,6 +66,7 @@ def make_headers(keep_alive=None, accept_encoding=None, user_agent=None,
         headers['proxy-authorization'] = 'Basic ' + \
             b64encode(six.b(proxy_basic_auth)).decode('utf-8')
 
-    return headers
-
+    if disable_cache:
+        headers['cache-control'] = 'no-cache'
 
+    return headers