Upgraded requests to git-master and forced urllib3 to git-master. Fixes strange errors with pyOpenSSL. See https://github.com/shazow/urllib3/issues/556.

lib/requests/sessions.py

@@ -62,12 +62,11 @@ def merge_setting(request_setting, session_setting, dict_class=OrderedDict):
     merged_setting = dict_class(to_key_val_list(session_setting))
     merged_setting.update(to_key_val_list(request_setting))
 
-    # Remove keys that are set to None.
-    for (k, v) in request_setting.items():
-        if v is None:
-            del merged_setting[k]
-
-    merged_setting = dict((k, v) for (k, v) in merged_setting.items() if v is not None)
+    # Remove keys that are set to None. Extract keys first to avoid altering
+    # the dictionary during iteration.
+    none_keys = [k for (k, v) in merged_setting.items() if v is None]
+    for key in none_keys:
+        del merged_setting[key]
 
     return merged_setting
 
@@ -90,7 +89,7 @@ def merge_hooks(request_hooks, session_hooks, dict_class=OrderedDict):
 
 class SessionRedirectMixin(object):
     def resolve_redirects(self, resp, req, stream=False, timeout=None,
-                          verify=True, cert=None, proxies=None):
+                          verify=True, cert=None, proxies=None, **adapter_kwargs):
         """Receives a Response. Returns a generator of Responses."""
 
         i = 0
@@ -171,7 +170,10 @@ class SessionRedirectMixin(object):
             except KeyError:
                 pass
 
-            extract_cookies_to_jar(prepared_request._cookies, prepared_request, resp.raw)
+            # Extract any cookies sent on the response to the cookiejar
+            # in the new request. Because we've mutated our copied prepared
+            # request, use the old one that we haven't yet touched.
+            extract_cookies_to_jar(prepared_request._cookies, req, resp.raw)
             prepared_request._cookies.update(self.cookies)
             prepared_request.prepare_cookies(prepared_request._cookies)
 
@@ -190,6 +192,7 @@ class SessionRedirectMixin(object):
                 cert=cert,
                 proxies=proxies,
                 allow_redirects=False,
+                **adapter_kwargs
             )
 
             extract_cookies_to_jar(self.cookies, prepared_request, resp.raw)
@@ -271,6 +274,12 @@ class Session(SessionRedirectMixin):
       >>> s = requests.Session()
       >>> s.get('http://httpbin.org/get')
       200
+
+    Or as a context manager::
+
+      >>> with requests.Session() as s:
+      >>>     s.get('http://httpbin.org/get')
+      200
     """
 
     __attrs__ = [
@@ -290,9 +299,9 @@ class Session(SessionRedirectMixin):
         #: :class:`Request <Request>`.
         self.auth = None
 
-        #: Dictionary mapping protocol to the URL of the proxy (e.g.
-        #: {'http': 'foo.bar:3128'}) to be used on each
-        #: :class:`Request <Request>`.
+        #: Dictionary mapping protocol or protocol and host to the URL of the proxy
+        #: (e.g. {'http': 'foo.bar:3128', 'http://host.name': 'foo.bar:4012'}) to
+        #: be used on each :class:`Request <Request>`.
         self.proxies = {}
 
         #: Event-handling hooks.
@@ -401,8 +410,8 @@ class Session(SessionRedirectMixin):
         :param url: URL for the new :class:`Request` object.
         :param params: (optional) Dictionary or bytes to be sent in the query
             string for the :class:`Request`.
-        :param data: (optional) Dictionary or bytes to send in the body of the
-            :class:`Request`.
+        :param data: (optional) Dictionary, bytes, or file-like object to send
+            in the body of the :class:`Request`.
         :param json: (optional) json to send in the body of the
             :class:`Request`.
         :param headers: (optional) Dictionary of HTTP Headers to send with the
@@ -414,13 +423,13 @@ class Session(SessionRedirectMixin):
         :param auth: (optional) Auth tuple or callable to enable
             Basic/Digest/Custom HTTP Auth.
         :param timeout: (optional) How long to wait for the server to send
-            data before giving up, as a float, or a (`connect timeout, read
-            timeout <user/advanced.html#timeouts>`_) tuple.
+            data before giving up, as a float, or a :ref:`(connect timeout,
+            read timeout) <timeouts>` tuple.
         :type timeout: float or tuple
         :param allow_redirects: (optional) Set to True by default.
         :type allow_redirects: bool
-        :param proxies: (optional) Dictionary mapping protocol to the URL of
-            the proxy.
+        :param proxies: (optional) Dictionary mapping protocol or protocol and
+            hostname to the URL of the proxy.
         :param stream: (optional) whether to immediately download the response
             content. Defaults to ``False``.
         :param verify: (optional) if ``True``, the SSL cert will be verified.
@@ -557,10 +566,6 @@ class Session(SessionRedirectMixin):
         # Set up variables needed for resolve_redirects and dispatching of hooks
         allow_redirects = kwargs.pop('allow_redirects', True)
         stream = kwargs.get('stream')
-        timeout = kwargs.get('timeout')
-        verify = kwargs.get('verify')
-        cert = kwargs.get('cert')
-        proxies = kwargs.get('proxies')
         hooks = request.hooks
 
         # Get the appropriate adapter to use
@@ -588,12 +593,7 @@ class Session(SessionRedirectMixin):
         extract_cookies_to_jar(self.cookies, request, r.raw)
 
         # Redirect resolving generator.
-        gen = self.resolve_redirects(r, request,
-            stream=stream,
-            timeout=timeout,
-            verify=verify,
-            cert=cert,
-            proxies=proxies)
+        gen = self.resolve_redirects(r, request, **kwargs)
 
         # Resolve redirects if allowed.
         history = [resp for resp in gen] if allow_redirects else []