Update Requests library 2.7.0 (5d6d1bc) to 2.9.1 (a1c9b84).

CHANGES.md

@@ -16,6 +16,7 @@
 * Update html5lib 0.999 to 0.99999999/1.0b9 (46dae3d)
 * Update PNotify library 2.0.1 to 2.1.0
 * Update profilehooks 1.4 to 1.8.2.dev0 (ee3f1a8)
+* Update Requests library 2.7.0 (5d6d1bc) to 2.9.1 (a1c9b84)
 
 
 ### 0.11.0 (2016-01-10 22:30:00 UTC)

lib/requests/LICENSE

@@ -1,13 +0,0 @@
-Copyright 2015 Kenneth Reitz
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.

lib/requests/NOTICE

@@ -1,54 +0,0 @@
-Requests includes some vendorized python libraries to ease installation.
-
-Urllib3 License
-===============
-
-This is the MIT license: http://www.opensource.org/licenses/mit-license.php
-
-Copyright 2008-2011 Andrey Petrov and contributors (see CONTRIBUTORS.txt),
-Modifications copyright 2012 Kenneth Reitz.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Chardet License
-===============
-
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
-License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
-
-This library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public
-License along with this library; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-02110-1301  USA
-
-
-CA Bundle License
-=================
-
-This Source Code Form is subject to the terms of the Mozilla Public
-License, v. 2.0. If a copy of the MPL was not distributed with this
-file, You can obtain one at http://mozilla.org/MPL/2.0/.

lib/requests/__init__.py

@@ -42,8 +42,8 @@ is at <http://python-requests.org>.
 """
 
 __title__ = 'requests'
-__version__ = '2.7.0'
-__build__ = 0x020700
+__version__ = '2.9.1'
+__build__ = 0x020901
 __author__ = 'Kenneth Reitz'
 __license__ = 'Apache 2.0'
 __copyright__ = 'Copyright 2015 Kenneth Reitz'
@@ -62,7 +62,8 @@ from .sessions import session, Session
 from .status_codes import codes
 from .exceptions import (
     RequestException, Timeout, URLRequired,
-    TooManyRedirects, HTTPError, ConnectionError
+    TooManyRedirects, HTTPError, ConnectionError,
+    FileModeWarning,
 )
 
 # Set default logging handler to avoid "No handler found" warnings.
@@ -75,3 +76,8 @@ except ImportError:
             pass
 
 logging.getLogger(__name__).addHandler(NullHandler())
+
+import warnings
+
+# FileModeWarnings go off per the default.
+warnings.simplefilter('default', FileModeWarning, append=True)

lib/requests/adapters.py

@@ -8,6 +8,7 @@ This module contains the transport adapters that Requests uses to define
 and maintain connections.
 """
 
+import os.path
 import socket
 
 from .models import Response
@@ -17,11 +18,14 @@ from .packages.urllib3.util import Timeout as TimeoutSauce
 from .packages.urllib3.util.retry import Retry
 from .compat import urlparse, basestring
 from .utils import (DEFAULT_CA_BUNDLE_PATH, get_encoding_from_headers,
-                    prepend_scheme_if_needed, get_auth_from_url, urldefragauth)
+                    prepend_scheme_if_needed, get_auth_from_url, urldefragauth,
+                    select_proxy)
 from .structures import CaseInsensitiveDict
+from .packages.urllib3.exceptions import ClosedPoolError
 from .packages.urllib3.exceptions import ConnectTimeoutError
 from .packages.urllib3.exceptions import HTTPError as _HTTPError
 from .packages.urllib3.exceptions import MaxRetryError
+from .packages.urllib3.exceptions import NewConnectionError
 from .packages.urllib3.exceptions import ProxyError as _ProxyError
 from .packages.urllib3.exceptions import ProtocolError
 from .packages.urllib3.exceptions import ReadTimeoutError
@@ -104,7 +108,7 @@ class HTTPAdapter(BaseAdapter):
 
     def __setstate__(self, state):
         # Can't handle by adding 'proxy_manager' to self.__attrs__ because
-        # because self.poolmanager uses a lambda function, which isn't pickleable.
+        # self.poolmanager uses a lambda function, which isn't pickleable.
         self.proxy_manager = {}
         self.config = {}
 
@@ -182,10 +186,15 @@ class HTTPAdapter(BaseAdapter):
                 raise Exception("Could not find a suitable SSL CA certificate bundle.")
 
             conn.cert_reqs = 'CERT_REQUIRED'
-            conn.ca_certs = cert_loc
+
+            if not os.path.isdir(cert_loc):
+                conn.ca_certs = cert_loc
+            else:
+                conn.ca_cert_dir = cert_loc
         else:
             conn.cert_reqs = 'CERT_NONE'
             conn.ca_certs = None
+            conn.ca_cert_dir = None
 
         if cert:
             if not isinstance(cert, basestring):
@@ -238,8 +247,7 @@ class HTTPAdapter(BaseAdapter):
         :param url: The URL to connect to.
         :param proxies: (optional) A Requests-style dictionary of proxies used on this request.
         """
-        proxies = proxies or {}
-        proxy = proxies.get(urlparse(url.lower()).scheme)
+        proxy = select_proxy(url, proxies)
 
         if proxy:
             proxy = prepend_scheme_if_needed(proxy, 'http')
@@ -272,12 +280,10 @@ class HTTPAdapter(BaseAdapter):
         :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`.
 
         :param request: The :class:`PreparedRequest <PreparedRequest>` being sent.
-        :param proxies: A dictionary of schemes to proxy URLs.
+        :param proxies: A dictionary of schemes or schemes and hosts to proxy URLs.
         """
-        proxies = proxies or {}
+        proxy = select_proxy(request.url, proxies)
         scheme = urlparse(request.url).scheme
-        proxy = proxies.get(scheme)
-
         if proxy and scheme != 'https':
             url = urldefragauth(request.url)
         else:
@@ -310,7 +316,6 @@ class HTTPAdapter(BaseAdapter):
         :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`.
 
         :param proxies: The url of the proxy being used for this request.
-        :param kwargs: Optional additional keyword arguments.
         """
         headers = {}
         username, password = get_auth_from_url(proxy)
@@ -395,7 +400,15 @@ class HTTPAdapter(BaseAdapter):
                         low_conn.send(b'\r\n')
                     low_conn.send(b'0\r\n\r\n')
 
-                    r = low_conn.getresponse()
+                    # Receive the response from the server
+                    try:
+                        # For Python 2.7+ versions, use buffering of HTTP
+                        # responses
+                        r = low_conn.getresponse(buffering=True)
+                    except TypeError:
+                        # For compatibility with Python 2.6 versions and back
+                        r = low_conn.getresponse()
+
                     resp = HTTPResponse.from_httplib(
                         r,
                         pool=conn,
@@ -414,13 +427,18 @@ class HTTPAdapter(BaseAdapter):
 
         except MaxRetryError as e:
             if isinstance(e.reason, ConnectTimeoutError):
-                raise ConnectTimeout(e, request=request)
+                # TODO: Remove this in 3.0.0: see #2811
+                if not isinstance(e.reason, NewConnectionError):
+                    raise ConnectTimeout(e, request=request)
 
             if isinstance(e.reason, ResponseError):
                 raise RetryError(e, request=request)
 
             raise ConnectionError(e, request=request)
 
+        except ClosedPoolError as e:
+            raise ConnectionError(e, request=request)
+
         except _ProxyError as e:
             raise ProxyError(e)
 

lib/requests/api.py

@@ -33,7 +33,7 @@ def request(method, url, **kwargs):
     :param allow_redirects: (optional) Boolean. Set to True if POST/PUT/DELETE redirect following is allowed.
     :type allow_redirects: bool
     :param proxies: (optional) Dictionary mapping protocol to the URL of the proxy.
-    :param verify: (optional) if ``True``, the SSL cert will be verified. A CA_BUNDLE path can also be provided.
+    :param verify: (optional) whether the SSL cert will be verified. A CA_BUNDLE path can also be provided. Defaults to ``True``.
     :param stream: (optional) if ``False``, the response content will be immediately downloaded.
     :param cert: (optional) if String, path to ssl client cert file (.pem). If Tuple, ('cert', 'key') pair.
     :return: :class:`Response <Response>` object
@@ -46,13 +46,11 @@ def request(method, url, **kwargs):
       <Response [200]>
     """
 
-    session = sessions.Session()
-    response = session.request(method=method, url=url, **kwargs)
-    # By explicitly closing the session, we avoid leaving sockets open which
-    # can trigger a ResourceWarning in some cases, and look like a memory leak
-    # in others.
-    session.close()
-    return response
+    # By using the 'with' statement we are sure the session is closed, thus we
+    # avoid leaving sockets open which can trigger a ResourceWarning in some
+    # cases, and look like a memory leak in others.
+    with sessions.Session() as session:
+        return session.request(method=method, url=url, **kwargs)
 
 
 def get(url, params=None, **kwargs):

lib/requests/auth.py

@@ -11,6 +11,7 @@ import os
 import re
 import time
 import hashlib
+import threading
 
 from base64 import b64encode
 
@@ -63,19 +64,26 @@ class HTTPDigestAuth(AuthBase):
     def __init__(self, username, password):
         self.username = username
         self.password = password
-        self.last_nonce = ''
-        self.nonce_count = 0
-        self.chal = {}
-        self.pos = None
-        self.num_401_calls = 1
+        # Keep state in per-thread local storage
+        self._thread_local = threading.local()
+
+    def init_per_thread_state(self):
+        # Ensure state is initialized just once per-thread
+        if not hasattr(self._thread_local, 'init'):
+            self._thread_local.init = True
+            self._thread_local.last_nonce = ''
+            self._thread_local.nonce_count = 0
+            self._thread_local.chal = {}
+            self._thread_local.pos = None
+            self._thread_local.num_401_calls = None
 
     def build_digest_header(self, method, url):
 
-        realm = self.chal['realm']
-        nonce = self.chal['nonce']
-        qop = self.chal.get('qop')
-        algorithm = self.chal.get('algorithm')
-        opaque = self.chal.get('opaque')
+        realm = self._thread_local.chal['realm']
+        nonce = self._thread_local.chal['nonce']
+        qop = self._thread_local.chal.get('qop')
+        algorithm = self._thread_local.chal.get('algorithm')
+        opaque = self._thread_local.chal.get('opaque')
 
         if algorithm is None:
             _algorithm = 'MD5'
@@ -114,12 +122,12 @@ class HTTPDigestAuth(AuthBase):
         HA1 = hash_utf8(A1)
         HA2 = hash_utf8(A2)
 
-        if nonce == self.last_nonce:
-            self.nonce_count += 1
+        if nonce == self._thread_local.last_nonce:
+            self._thread_local.nonce_count += 1
         else:
-            self.nonce_count = 1
-        ncvalue = '%08x' % self.nonce_count
-        s = str(self.nonce_count).encode('utf-8')
+            self._thread_local.nonce_count = 1
+        ncvalue = '%08x' % self._thread_local.nonce_count
+        s = str(self._thread_local.nonce_count).encode('utf-8')
         s += nonce.encode('utf-8')
         s += time.ctime().encode('utf-8')
         s += os.urandom(8)
@@ -128,7 +136,7 @@ class HTTPDigestAuth(AuthBase):
         if _algorithm == 'MD5-SESS':
             HA1 = hash_utf8('%s:%s:%s' % (HA1, nonce, cnonce))
 
-        if qop is None:
+        if not qop:
             respdig = KD(HA1, "%s:%s" % (nonce, HA2))
         elif qop == 'auth' or 'auth' in qop.split(','):
             noncebit = "%s:%s:%s:%s:%s" % (
@@ -139,7 +147,7 @@ class HTTPDigestAuth(AuthBase):
             # XXX handle auth-int.
             return None
 
-        self.last_nonce = nonce
+        self._thread_local.last_nonce = nonce
 
         # XXX should the partial digests be encoded too?
         base = 'username="%s", realm="%s", nonce="%s", uri="%s", ' \
@@ -158,23 +166,22 @@ class HTTPDigestAuth(AuthBase):
     def handle_redirect(self, r, **kwargs):
         """Reset num_401_calls counter on redirects."""
         if r.is_redirect:
-            self.num_401_calls = 1
+            self._thread_local.num_401_calls = 1
 
     def handle_401(self, r, **kwargs):
         """Takes the given response and tries digest-auth, if needed."""
 
-        if self.pos is not None:
+        if self._thread_local.pos is not None:
             # Rewind the file position indicator of the body to where
             # it was to resend the request.
-            r.request.body.seek(self.pos)
-        num_401_calls = getattr(self, 'num_401_calls', 1)
+            r.request.body.seek(self._thread_local.pos)
         s_auth = r.headers.get('www-authenticate', '')
 
-        if 'digest' in s_auth.lower() and num_401_calls < 2:
+        if 'digest' in s_auth.lower() and self._thread_local.num_401_calls < 2:
 
-            self.num_401_calls += 1
+            self._thread_local.num_401_calls += 1
             pat = re.compile(r'digest ', flags=re.IGNORECASE)
-            self.chal = parse_dict_header(pat.sub('', s_auth, count=1))
+            self._thread_local.chal = parse_dict_header(pat.sub('', s_auth, count=1))
 
             # Consume content and release the original connection
             # to allow our new request to reuse the same one.
@@ -192,21 +199,25 @@ class HTTPDigestAuth(AuthBase):
 
             return _r
 
-        self.num_401_calls = 1
+        self._thread_local.num_401_calls = 1
         return r
 
     def __call__(self, r):
+        # Initialize per-thread state, if needed
+        self.init_per_thread_state()
         # If we have a saved nonce, skip the 401
-        if self.last_nonce:
+        if self._thread_local.last_nonce:
             r.headers['Authorization'] = self.build_digest_header(r.method, r.url)
         try:
-            self.pos = r.body.tell()
+            self._thread_local.pos = r.body.tell()
         except AttributeError:
             # In the case of HTTPDigestAuth being reused and the body of
             # the previous request was a file-like object, pos has the
             # file position of the previous body. Ensure it's set to
             # None.
-            self.pos = None
+            self._thread_local.pos = None
         r.register_hook('response', self.handle_401)
         r.register_hook('response', self.handle_redirect)
+        self._thread_local.num_401_calls = 1
+
         return r

lib/requests/cacert.pem

@@ -1507,38 +1507,6 @@ rscL9yuwNwXsvFcj4jjSm2jzVhKIT0J8uDHEtdvkyCE06UgRNe76x5JXxZ805Mf2
 9w4LTJxoeHtxMcfrHuBnQfO3oKfN5XozNmr6mis=
 -----END CERTIFICATE-----
 
-# Issuer: CN=TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı O=(c) 2005 TÜRKTRUST Bilgi İletişim ve Bilişim Güvenliği Hizmetleri A.Ş.
-# Subject: CN=TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı O=(c) 2005 TÜRKTRUST Bilgi İletişim ve Bilişim Güvenliği Hizmetleri A.Ş.
-# Label: "TURKTRUST Certificate Services Provider Root 1"
-# Serial: 1
-# MD5 Fingerprint: f1:6a:22:18:c9:cd:df:ce:82:1d:1d:b7:78:5c:a9:a5
-# SHA1 Fingerprint: 79:98:a3:08:e1:4d:65:85:e6:c2:1e:15:3a:71:9f:ba:5a:d3:4a:d9
-# SHA256 Fingerprint: 44:04:e3:3b:5e:14:0d:cf:99:80:51:fd:fc:80:28:c7:c8:16:15:c5:ee:73:7b:11:1b:58:82:33:a9:b5:35:a0
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------END CERTIFICATE-----
-
 # Issuer: CN=TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı O=TÜRKTRUST Bilgi İletişim ve Bilişim Güvenliği Hizmetleri A.Ş. (c) Kasım 2005
 # Subject: CN=TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı O=TÜRKTRUST Bilgi İletişim ve Bilişim Güvenliği Hizmetleri A.Ş. (c) Kasım 2005
 # Label: "TURKTRUST Certificate Services Provider Root 2"
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-# Serial: 941389028203453866782103406992443
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-
-# Issuer: CN=TC TrustCenter Universal CA I O=TC TrustCenter GmbH OU=TC TrustCenter Universal CA
-# Subject: CN=TC TrustCenter Universal CA I O=TC TrustCenter GmbH OU=TC TrustCenter Universal CA
-# Label: "TC TrustCenter Universal CA I"
-# Serial: 601024842042189035295619584734726
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------BEGIN CERTIFICATE-----
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-
 # Issuer: CN=Deutsche Telekom Root CA 2 O=Deutsche Telekom AG OU=T-TeleSec Trust Center
 # Subject: CN=Deutsche Telekom Root CA 2 O=Deutsche Telekom AG OU=T-TeleSec Trust Center
 # Label: "Deutsche Telekom Root CA 2"
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 -----END CERTIFICATE-----
 
-# Issuer: CN=ComSign Secured CA O=ComSign
-# Subject: CN=ComSign Secured CA O=ComSign
-# Label: "ComSign Secured CA"
-# Serial: 264725503855295744117309814499492384489
-# MD5 Fingerprint: 40:01:25:06:8d:21:43:6a:0e:43:00:9c:e7:43:f3:d5
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------BEGIN CERTIFICATE-----
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------END CERTIFICATE-----
-
 # Issuer: CN=Cybertrust Global Root O=Cybertrust, Inc
 # Subject: CN=Cybertrust Global Root O=Cybertrust, Inc
 # Label: "Cybertrust Global Root"
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 -----END CERTIFICATE-----
 
-# Issuer: CN=Buypass Class 3 CA 1 O=Buypass AS-983163327
-# Subject: CN=Buypass Class 3 CA 1 O=Buypass AS-983163327
-# Label: "Buypass Class 3 CA 1"
-# Serial: 2
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-# SHA1 Fingerprint: 61:57:3a:11:df:0e:d8:7e:d5:92:65:22:ea:d0:56:d7:44:b3:23:71
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------BEGIN CERTIFICATE-----
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------END CERTIFICATE-----
-
 # Issuer: CN=EBG Elektronik Sertifika Hizmet Sağlayıcısı O=EBG Bilişim Teknolojileri ve Hizmetleri A.Ş.
 # Subject: CN=EBG Elektronik Sertifika Hizmet Sağlayıcısı O=EBG Bilişim Teknolojileri ve Hizmetleri A.Ş.
 # Label: "EBG Elektronik Sertifika Hizmet Sa\xC4\x9Flay\xc4\xb1\x63\xc4\xb1s\xc4\xb1"
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 -----END CERTIFICATE-----
+
+# Issuer: CN=TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H5 O=TÜRKTRUST Bilgi İletişim ve Bilişim Güvenliği Hizmetleri A.Ş.
+# Subject: CN=TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H5 O=TÜRKTRUST Bilgi İletişim ve Bilişim Güvenliği Hizmetleri A.Ş.
+# Label: "TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H5"
+# Serial: 156233699172481
+# MD5 Fingerprint: da:70:8e:f0:22:df:93:26:f6:5f:9f:d3:15:06:52:4e
+# SHA1 Fingerprint: c4:18:f6:4d:46:d1:df:00:3d:27:30:13:72:43:a9:12:11:c6:75:fb
+# SHA256 Fingerprint: 49:35:1b:90:34:44:c1:85:cc:dc:5c:69:3d:24:d8:55:5c:b2:08:d6:a8:14:13:07:69:9f:4a:f0:63:19:9d:78
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H6 O=TÜRKTRUST Bilgi İletişim ve Bilişim Güvenliği Hizmetleri A.Ş.
+# Subject: CN=TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H6 O=TÜRKTRUST Bilgi İletişim ve Bilişim Güvenliği Hizmetleri A.Ş.
+# Label: "TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H6"
+# Serial: 138134509972618
+# MD5 Fingerprint: f8:c5:ee:2a:6b:be:95:8d:08:f7:25:4a:ea:71:3e:46
+# SHA1 Fingerprint: 8a:5c:8c:ee:a5:03:e6:05:56:ba:d8:1b:d4:f6:c9:b0:ed:e5:2f:e0
+# SHA256 Fingerprint: 8d:e7:86:55:e1:be:7f:78:47:80:0b:93:f6:94:d2:1d:36:8c:c0:6e:03:3e:7f:ab:04:bb:5e:b9:9d:a6:b7:00
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=Certinomis - Root CA O=Certinomis OU=0002 433998903
+# Subject: CN=Certinomis - Root CA O=Certinomis OU=0002 433998903
+# Label: "Certinomis - Root CA"
+# Serial: 1
+# MD5 Fingerprint: 14:0a:fd:8d:a8:28:b5:38:69:db:56:7e:61:22:03:3f
+# SHA1 Fingerprint: 9d:70:bb:01:a5:a4:a0:18:11:2e:f7:1c:01:b9:32:c5:34:e7:88:a8
+# SHA256 Fingerprint: 2a:99:f5:bc:11:74:b7:3c:bb:1d:62:08:84:e0:1c:34:e5:1c:cb:39:78:da:12:5f:0e:33:26:88:83:bf:41:58
+-----BEGIN CERTIFICATE-----
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+gQncItzujrnEj1PhZ7szuIgVRs/taTX/dQ1G885x4cVrhkIGuUE=
+-----END CERTIFICATE-----
 # Issuer: CN=Entrust.net Secure Server Certification Authority O=Entrust.net OU=www.entrust.net/CPS incorp. by ref. (limits liab.)/(c) 1999 Entrust.net Limited
 # Subject: CN=Entrust.net Secure Server Certification Authority O=Entrust.net OU=www.entrust.net/CPS incorp. by ref. (limits liab.)/(c) 1999 Entrust.net Limited
 # Label: "Entrust.net Secure Server CA"

lib/requests/cookies.py

@@ -8,6 +8,7 @@ requests.utils imports from here, so be careful with imports.
 
 import copy
 import time
+import calendar
 import collections
 from .compat import cookielib, urlparse, urlunparse, Morsel
 
@@ -143,10 +144,13 @@ def remove_cookie_by_name(cookiejar, name, domain=None, path=None):
     """
     clearables = []
     for cookie in cookiejar:
-        if cookie.name == name:
-            if domain is None or domain == cookie.domain:
-                if path is None or path == cookie.path:
-                    clearables.append((cookie.domain, cookie.path, cookie.name))
+        if cookie.name != name:
+            continue
+        if domain is not None and domain != cookie.domain:
+            continue
+        if path is not None and path != cookie.path:
+            continue
+        clearables.append((cookie.domain, cookie.path, cookie.name))
 
     for domain, path, name in clearables:
         cookiejar.clear(domain, path, name)
@@ -365,7 +369,7 @@ def _copy_cookie_jar(jar):
         return None
 
     if hasattr(jar, 'copy'):
-        # We're dealing with an instane of RequestsCookieJar
+        # We're dealing with an instance of RequestsCookieJar
         return jar.copy()
     # We're dealing with a generic CookieJar instance
     new_jar = copy.copy(jar)
@@ -421,8 +425,9 @@ def morsel_to_cookie(morsel):
             raise TypeError('max-age: %s must be integer' % morsel['max-age'])
     elif morsel['expires']:
         time_template = '%a, %d-%b-%Y %H:%M:%S GMT'
-        expires = int(time.mktime(
-            time.strptime(morsel['expires'], time_template)) - time.timezone)
+        expires = calendar.timegm(
+            time.strptime(morsel['expires'], time_template)
+        )
     return create_cookie(
         comment=morsel['comment'],
         comment_url=bool(morsel['comment']),

lib/requests/exceptions.py

@@ -97,3 +97,18 @@ class StreamConsumedError(RequestException, TypeError):
 
 class RetryError(RequestException):
     """Custom retries logic failed"""
+
+
+# Warnings
+
+
+class RequestsWarning(Warning):
+    """Base warning for Requests."""
+    pass
+
+
+class FileModeWarning(RequestsWarning, DeprecationWarning):
+    """
+    A file was opened in text mode, but Requests determined its binary length.
+    """
+    pass

lib/requests/hooks.py

@@ -12,34 +12,23 @@ Available hooks:
     The response generated from a Request.
 
 """
-
-
 HOOKS = ['response']
 
-
 def default_hooks():
-    hooks = {}
-    for event in HOOKS:
-        hooks[event] = []
-    return hooks
+    return dict((event, []) for event in HOOKS)
 
 # TODO: response is the only one
 
 
 def dispatch_hook(key, hooks, hook_data, **kwargs):
     """Dispatches a hook dictionary on a given piece of data."""
-
     hooks = hooks or dict()
-
-    if key in hooks:
-        hooks = hooks.get(key)
-
+    hooks = hooks.get(key)
+    if hooks:
         if hasattr(hooks, '__call__'):
             hooks = [hooks]
-
         for hook in hooks:
             _hook_data = hook(hook_data, **kwargs)
             if _hook_data is not None:
                 hook_data = _hook_data
-
     return hook_data

lib/requests/models.py

@@ -192,7 +192,7 @@ class Request(RequestHooksMixin):
     :param headers: dictionary of headers to send.
     :param files: dictionary of {filename: fileobject} files to multipart upload.
     :param data: the body to attach to the request. If a dictionary is provided, form-encoding will take place.
-    :param json: json for the body to attach to the request (if data is not specified).
+    :param json: json for the body to attach to the request (if files or data is not specified).
     :param params: dictionary of URL parameters to append to the URL.
     :param auth: Auth handler or (user, pass) tuple.
     :param cookies: dictionary or CookieJar of cookies to attach to this request.
@@ -319,12 +319,12 @@ class PreparedRequest(RequestEncodingMixin, RequestHooksMixin):
         """Prepares the given HTTP method."""
         self.method = method
         if self.method is not None:
-            self.method = self.method.upper()
+            self.method = to_native_string(self.method.upper())
 
     def prepare_url(self, url, params):
         """Prepares the given HTTP URL."""
         #: Accept objects that have string representations.
-        #: We're unable to blindy call unicode/str functions
+        #: We're unable to blindly call unicode/str functions
         #: as this will include the bytestring indicator (b'')
         #: on python 3.x.
         #: https://github.com/kennethreitz/requests/pull/2238
@@ -385,6 +385,9 @@ class PreparedRequest(RequestEncodingMixin, RequestHooksMixin):
             if isinstance(fragment, str):
                 fragment = fragment.encode('utf-8')
 
+        if isinstance(params, (str, bytes)):
+            params = to_native_string(params)
+
         enc_params = self._encode_params(params)
         if enc_params:
             if query:
@@ -414,7 +417,7 @@ class PreparedRequest(RequestEncodingMixin, RequestHooksMixin):
         content_type = None
         length = None
 
-        if json is not None:
+        if not data and json is not None:
             content_type = 'application/json'
             body = complexjson.dumps(json)
 
@@ -434,7 +437,7 @@ class PreparedRequest(RequestEncodingMixin, RequestHooksMixin):
             if files:
                 raise NotImplementedError('Streamed bodies and files are mutually exclusive.')
 
-            if length is not None:
+            if length:
                 self.headers['Content-Length'] = builtin_str(length)
             else:
                 self.headers['Transfer-Encoding'] = 'chunked'
@@ -443,7 +446,7 @@ class PreparedRequest(RequestEncodingMixin, RequestHooksMixin):
             if files:
                 (body, content_type) = self._encode_files(files, data)
             else:
-                if data and json is None:
+                if data:
                     body = self._encode_params(data)
                     if isinstance(data, basestring) or hasattr(data, 'read'):
                         content_type = None
@@ -631,7 +634,7 @@ class Response(object):
 
     @property
     def is_permanent_redirect(self):
-        """True if this Response one of the permanant versions of redirect"""
+        """True if this Response one of the permanent versions of redirect"""
         return ('location' in self.headers and self.status_code in (codes.moved_permanently, codes.permanent_redirect))
 
     @property

lib/requests/packages/README.rst

@@ -1,8 +1,11 @@
 If you are planning to submit a pull request to requests with any changes in 
-this library do not go any further. These are independent libraries which we 
-vendor into requests. Any changes necessary to these libraries must be made in 
+this library do not go any further. These are independent libraries which we
+vendor into requests. Any changes necessary to these libraries must be made in
 them and submitted as separate pull requests to those libraries.
 
 urllib3 pull requests go here: https://github.com/shazow/urllib3
 
 chardet pull requests go here: https://github.com/chardet/chardet
+
+See https://github.com/kennethreitz/requests/pull/1812#issuecomment-30854316
+for the reasoning behind this.

lib/requests/packages/__init__.py

@@ -1,3 +1,36 @@
+'''
+Debian and other distributions "unbundle" requests' vendored dependencies, and
+rewrite all imports to use the global versions of ``urllib3`` and ``chardet``.
+The problem with this is that not only requests itself imports those
+dependencies, but third-party code outside of the distros' control too.
+
+In reaction to these problems, the distro maintainers replaced
+``requests.packages`` with a magical "stub module" that imports the correct
+modules. The implementations were varying in quality and all had severe
+problems. For example, a symlink (or hardlink) that links the correct modules
+into place introduces problems regarding object identity, since you now have
+two modules in `sys.modules` with the same API, but different identities::
+
+    requests.packages.urllib3 is not urllib3
+
+With version ``2.5.2``, requests started to maintain its own stub, so that
+distro-specific breakage would be reduced to a minimum, even though the whole
+issue is not requests' fault in the first place. See
+https://github.com/kennethreitz/requests/pull/2375 for the corresponding pull
+request.
+'''
+
 from __future__ import absolute_import
+import sys
+
+try:
+    from . import urllib3
+except ImportError:
+    import urllib3
+    sys.modules['%s.urllib3' % __name__] = urllib3
 
-from . import urllib3
+try:
+    from . import chardet
+except ImportError:
+    import chardet
+    sys.modules['%s.chardet' % __name__] = chardet

lib/requests/packages/urllib3/__init__.py

@@ -2,10 +2,8 @@
 urllib3 - Thread-safe connection pooling and re-using.
 """
 
-__author__ = 'Andrey Petrov (andrey.petrov@shazow.net)'
-__license__ = 'MIT'
-__version__ = '1.10.4'
-
+from __future__ import absolute_import
+import warnings
 
 from .connectionpool import (
     HTTPConnectionPool,
@@ -32,8 +30,30 @@ except ImportError:
         def emit(self, record):
             pass
 
+__author__ = 'Andrey Petrov (andrey.petrov@shazow.net)'
+__license__ = 'MIT'
+__version__ = '1.13.1'
+
+__all__ = (
+    'HTTPConnectionPool',
+    'HTTPSConnectionPool',
+    'PoolManager',
+    'ProxyManager',
+    'HTTPResponse',
+    'Retry',
+    'Timeout',
+    'add_stderr_logger',
+    'connection_from_url',
+    'disable_warnings',
+    'encode_multipart_formdata',
+    'get_host',
+    'make_headers',
+    'proxy_from_url',
+)
+
 logging.getLogger(__name__).addHandler(NullHandler())
 
+
 def add_stderr_logger(level=logging.DEBUG):
     """
     Helper for quickly adding a StreamHandler to the logger. Useful for
@@ -55,12 +75,16 @@ def add_stderr_logger(level=logging.DEBUG):
 del NullHandler
 
 
-import warnings
 # SecurityWarning's always go off by default.
 warnings.simplefilter('always', exceptions.SecurityWarning, append=True)
+# SubjectAltNameWarning's should go off once per host
+warnings.simplefilter('default', exceptions.SubjectAltNameWarning)
 # InsecurePlatformWarning's don't vary between requests, so we keep it default.
 warnings.simplefilter('default', exceptions.InsecurePlatformWarning,
                       append=True)
+# SNIMissingWarnings should go off only once.
+warnings.simplefilter('default', exceptions.SNIMissingWarning)
+
 
 def disable_warnings(category=exceptions.HTTPWarning):
     """

lib/requests/packages/urllib3/_collections.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 from collections import Mapping, MutableMapping
 try:
     from threading import RLock
@@ -97,14 +98,7 @@ class RecentlyUsedContainer(MutableMapping):
             return list(iterkeys(self._container))
 
 
-_dict_setitem = dict.__setitem__
-_dict_getitem = dict.__getitem__
-_dict_delitem = dict.__delitem__
-_dict_contains = dict.__contains__
-_dict_setdefault = dict.setdefault
-
-
-class HTTPHeaderDict(dict):
+class HTTPHeaderDict(MutableMapping):
     """
     :param headers:
         An iterable of field-value pairs. Must not contain multiple field names
@@ -139,7 +133,8 @@ class HTTPHeaderDict(dict):
     """
 
     def __init__(self, headers=None, **kwargs):
-        dict.__init__(self)
+        super(HTTPHeaderDict, self).__init__()
+        self._container = {}
         if headers is not None:
             if isinstance(headers, HTTPHeaderDict):
                 self._copy_from(headers)
@@ -149,38 +144,44 @@ class HTTPHeaderDict(dict):
             self.extend(kwargs)
 
     def __setitem__(self, key, val):
-        return _dict_setitem(self, key.lower(), (key, val))
+        self._container[key.lower()] = (key, val)
+        return self._container[key.lower()]
 
     def __getitem__(self, key):
-        val = _dict_getitem(self, key.lower())
+        val = self._container[key.lower()]
         return ', '.join(val[1:])
 
     def __delitem__(self, key):
-        return _dict_delitem(self, key.lower())
+        del self._container[key.lower()]
 
     def __contains__(self, key):
-        return _dict_contains(self, key.lower())
+        return key.lower() in self._container
 
     def __eq__(self, other):
         if not isinstance(other, Mapping) and not hasattr(other, 'keys'):
             return False
         if not isinstance(other, type(self)):
             other = type(self)(other)
-        return dict((k1, self[k1]) for k1 in self) == dict((k2, other[k2]) for k2 in other)
+        return (dict((k.lower(), v) for k, v in self.itermerged()) ==
+                dict((k.lower(), v) for k, v in other.itermerged()))
 
     def __ne__(self, other):
         return not self.__eq__(other)
 
-    values = MutableMapping.values
-    get = MutableMapping.get
-    update = MutableMapping.update
-    
-    if not PY3: # Python 2
+    if not PY3:  # Python 2
         iterkeys = MutableMapping.iterkeys
         itervalues = MutableMapping.itervalues
 
     __marker = object()
 
+    def __len__(self):
+        return len(self._container)
+
+    def __iter__(self):
+        # Only provide the originally cased names
+        for vals in self._container.values():
+            yield vals[0]
+
     def pop(self, key, default=__marker):
         '''D.pop(k[,d]) -> v, remove specified key and return the corresponding value.
           If key is not found, d is returned if given, otherwise KeyError is raised.
@@ -216,7 +217,7 @@ class HTTPHeaderDict(dict):
         key_lower = key.lower()
         new_vals = key, val
         # Keep the common case aka no item present as fast as possible
-        vals = _dict_setdefault(self, key_lower, new_vals)
+        vals = self._container.setdefault(key_lower, new_vals)
         if new_vals is not vals:
             # new_vals was not inserted, as there was a previous one
             if isinstance(vals, list):
@@ -225,7 +226,7 @@ class HTTPHeaderDict(dict):
             else:
                 # vals should be a tuple then, i.e. only one item so far
                 # Need to convert the tuple to list for further extension
-                _dict_setitem(self, key_lower, [vals[0], vals[1], val])
+                self._container[key_lower] = [vals[0], vals[1], val]
 
     def extend(self, *args, **kwargs):
         """Generic import function for any type of header-like object.
@@ -234,9 +235,9 @@ class HTTPHeaderDict(dict):
         """
         if len(args) > 1:
             raise TypeError("extend() takes at most 1 positional "
-                            "arguments ({} given)".format(len(args)))
+                            "arguments ({0} given)".format(len(args)))
         other = args[0] if len(args) >= 1 else ()
-        
+
         if isinstance(other, HTTPHeaderDict):
             for key, val in other.iteritems():
                 self.add(key, val)
@@ -257,7 +258,7 @@ class HTTPHeaderDict(dict):
         """Returns a list of all the values for the named field. Returns an
         empty list if the key doesn't exist."""
         try:
-            vals = _dict_getitem(self, key.lower())
+            vals = self._container[key.lower()]
         except KeyError:
             return []
         else:
@@ -276,11 +277,11 @@ class HTTPHeaderDict(dict):
 
     def _copy_from(self, other):
         for key in other:
-            val = _dict_getitem(other, key)
+            val = other.getlist(key)
             if isinstance(val, list):
                 # Don't need to convert tuples
                 val = list(val)
-            _dict_setitem(self, key, val)
+            self._container[key.lower()] = [key] + val
 
     def copy(self):
         clone = type(self)()
@@ -290,33 +291,33 @@ class HTTPHeaderDict(dict):
     def iteritems(self):
         """Iterate over all header lines, including duplicate ones."""
         for key in self:
-            vals = _dict_getitem(self, key)
+            vals = self._container[key.lower()]
             for val in vals[1:]:
                 yield vals[0], val
 
     def itermerged(self):
         """Iterate over all headers, merging duplicate ones together."""
         for key in self:
-            val = _dict_getitem(self, key)
+            val = self._container[key.lower()]
             yield val[0], ', '.join(val[1:])
 
     def items(self):
         return list(self.iteritems())
 
     @classmethod
-    def from_httplib(cls, message): # Python 2
+    def from_httplib(cls, message):  # Python 2
         """Read headers from a Python 2 httplib message object."""
         # python2.7 does not expose a proper API for exporting multiheaders
-        # efficiently. This function re-reads raw lines from the message 
+        # efficiently. This function re-reads raw lines from the message
         # object and extracts the multiheaders properly.
         headers = []
-         
+
         for line in message.headers:
             if line.startswith((' ', '\t')):
                 key, value = headers[-1]
                 headers[-1] = (key, value + '\r\n' + line.rstrip())
                 continue
-    
+
             key, value = line.split(':', 1)
             headers.append((key, value.strip()))
 

lib/requests/packages/urllib3/connection.py

@@ -1,23 +1,20 @@
+from __future__ import absolute_import
 import datetime
+import os
 import sys
 import socket
-from socket import timeout as SocketTimeout
+from socket import error as SocketError, timeout as SocketTimeout
 import warnings
 from .packages import six
 
 try:  # Python 3
-    from http.client import HTTPConnection as _HTTPConnection, HTTPException
+    from http.client import HTTPConnection as _HTTPConnection
+    from http.client import HTTPException  # noqa: unused in this module
 except ImportError:
-    from httplib import HTTPConnection as _HTTPConnection, HTTPException
-
-
-class DummyConnection(object):
-    "Used to detect a failed ConnectionCls import."
-    pass
-
+    from httplib import HTTPConnection as _HTTPConnection
+    from httplib import HTTPException  # noqa: unused in this module
 
 try:  # Compiled with SSL?
-    HTTPSConnection = DummyConnection
     import ssl
     BaseSSLError = ssl.SSLError
 except (ImportError, AttributeError):  # Platform-specific: No SSL.
@@ -36,9 +33,10 @@ except NameError:  # Python 2:
 
 
 from .exceptions import (
+    NewConnectionError,
     ConnectTimeoutError,
+    SubjectAltNameWarning,
     SystemTimeWarning,
-    SecurityWarning,
 )
 from .packages.ssl_match_hostname import match_hostname
 
@@ -60,6 +58,11 @@ port_by_scheme = {
 RECENT_DATE = datetime.date(2014, 1, 1)
 
 
+class DummyConnection(object):
+    """Used to detect a failed ConnectionCls import."""
+    pass
+
+
 class HTTPConnection(_HTTPConnection, object):
     """
     Based on httplib.HTTPConnection but provides an extra constructor
@@ -133,11 +136,15 @@ class HTTPConnection(_HTTPConnection, object):
             conn = connection.create_connection(
                 (self.host, self.port), self.timeout, **extra_kw)
 
-        except SocketTimeout:
+        except SocketTimeout as e:
             raise ConnectTimeoutError(
                 self, "Connection to %s timed out. (connect timeout=%s)" %
                 (self.host, self.timeout))
 
+        except SocketError as e:
+            raise NewConnectionError(
+                self, "Failed to establish a new connection: %s" % e)
+
         return conn
 
     def _prepare_conn(self, conn):
@@ -185,19 +192,25 @@ class VerifiedHTTPSConnection(HTTPSConnection):
     """
     cert_reqs = None
     ca_certs = None
+    ca_cert_dir = None
     ssl_version = None
     assert_fingerprint = None
 
     def set_cert(self, key_file=None, cert_file=None,
                  cert_reqs=None, ca_certs=None,
-                 assert_hostname=None, assert_fingerprint=None):
+                 assert_hostname=None, assert_fingerprint=None,
+                 ca_cert_dir=None):
+
+        if (ca_certs or ca_cert_dir) and cert_reqs is None:
+            cert_reqs = 'CERT_REQUIRED'
 
         self.key_file = key_file
         self.cert_file = cert_file
         self.cert_reqs = cert_reqs
-        self.ca_certs = ca_certs
         self.assert_hostname = assert_hostname
         self.assert_fingerprint = assert_fingerprint
+        self.ca_certs = ca_certs and os.path.expanduser(ca_certs)
+        self.ca_cert_dir = ca_cert_dir and os.path.expanduser(ca_cert_dir)
 
     def connect(self):
         # Add certificate verification
@@ -234,6 +247,7 @@ class VerifiedHTTPSConnection(HTTPSConnection):
         self.sock = ssl_wrap_socket(conn, self.key_file, self.cert_file,
                                     cert_reqs=resolved_cert_reqs,
                                     ca_certs=self.ca_certs,
+                                    ca_cert_dir=self.ca_cert_dir,
                                     server_hostname=hostname,
                                     ssl_version=resolved_ssl_version)
 
@@ -245,15 +259,25 @@ class VerifiedHTTPSConnection(HTTPSConnection):
             cert = self.sock.getpeercert()
             if not cert.get('subjectAltName', ()):
                 warnings.warn((
-                    'Certificate has no `subjectAltName`, falling back to check for a `commonName` for now. '
-                    'This feature is being removed by major browsers and deprecated by RFC 2818. '
-                    '(See https://github.com/shazow/urllib3/issues/497 for details.)'),
-                    SecurityWarning
+                    'Certificate for {0} has no `subjectAltName`, falling back to check for a '
+                    '`commonName` for now. This feature is being removed by major browsers and '
+                    'deprecated by RFC 2818. (See https://github.com/shazow/urllib3/issues/497 '
+                    'for details.)'.format(hostname)),
+                    SubjectAltNameWarning
                 )
-            match_hostname(cert, self.assert_hostname or hostname)
 
-        self.is_verified = (resolved_cert_reqs == ssl.CERT_REQUIRED
-                            or self.assert_fingerprint is not None)
+            # In case the hostname is an IPv6 address, strip the square
+            # brackets from it before using it to validate. This is because
+            # a certificate with an IPv6 address in it won't have square
+            # brackets around that address. Sadly, match_hostname won't do this
+            # for us: it expects the plain host part without any extra work
+            # that might have been done to make it palatable to httplib.
+            asserted_hostname = self.assert_hostname or hostname
+            asserted_hostname = asserted_hostname.strip('[]')
+            match_hostname(cert, asserted_hostname)
+
+        self.is_verified = (resolved_cert_reqs == ssl.CERT_REQUIRED or
+                            self.assert_fingerprint is not None)
 
 
 if ssl:

lib/requests/packages/urllib3/connectionpool.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 import errno
 import logging
 import sys
@@ -10,13 +11,15 @@ try:  # Python 3
     from queue import LifoQueue, Empty, Full
 except ImportError:
     from Queue import LifoQueue, Empty, Full
-    import Queue as _  # Platform-specific: Windows
+    # Queue is imported for side effects on MS Windows
+    import Queue as _unused_module_Queue  # noqa: unused
 
 
 from .exceptions import (
     ClosedPoolError,
     ProtocolError,
     EmptyPoolError,
+    HeaderParsingError,
     HostChangedError,
     LocationValueError,
     MaxRetryError,
@@ -25,6 +28,7 @@ from .exceptions import (
     SSLError,
     TimeoutError,
     InsecureRequestWarning,
+    NewConnectionError,
 )
 from .packages.ssl_match_hostname import CertificateError
 from .packages import six
@@ -32,15 +36,16 @@ from .connection import (
     port_by_scheme,
     DummyConnection,
     HTTPConnection, HTTPSConnection, VerifiedHTTPSConnection,
-    HTTPException, BaseSSLError, ConnectionError
+    HTTPException, BaseSSLError,
 )
 from .request import RequestMethods
 from .response import HTTPResponse
 
 from .util.connection import is_connection_dropped
+from .util.response import assert_header_parsing
 from .util.retry import Retry
 from .util.timeout import Timeout
-from .util.url import get_host
+from .util.url import get_host, Url
 
 
 xrange = six.moves.xrange
@@ -50,7 +55,7 @@ log = logging.getLogger(__name__)
 _Default = object()
 
 
-## Pool objects
+# Pool objects
 class ConnectionPool(object):
     """
     Base class for all connection pools, such as
@@ -64,8 +69,7 @@ class ConnectionPool(object):
         if not host:
             raise LocationValueError("No host specified.")
 
-        # httplib doesn't like it when we include brackets in ipv6 addresses
-        self.host = host.strip('[]')
+        self.host = host
         self.port = port
 
     def __str__(self):
@@ -120,7 +124,7 @@ class HTTPConnectionPool(ConnectionPool, RequestMethods):
 
     :param maxsize:
         Number of connections to save that can be reused. More than 1 is useful
-        in multithreaded situations. If ``block`` is set to false, more
+        in multithreaded situations. If ``block`` is set to False, more
         connections will be created but they will not be saved once they've
         been used.
 
@@ -381,8 +385,19 @@ class HTTPConnectionPool(ConnectionPool, RequestMethods):
         log.debug("\"%s %s %s\" %s %s" % (method, url, http_version,
                                           httplib_response.status,
                                           httplib_response.length))
+
+        try:
+            assert_header_parsing(httplib_response.msg)
+        except HeaderParsingError as hpe:  # Platform-specific: Python 3
+            log.warning(
+                'Failed to parse headers (url=%s): %s',
+                self._absolute_url(url), hpe, exc_info=True)
+
         return httplib_response
 
+    def _absolute_url(self, path):
+        return Url(scheme=self.scheme, host=self.host, port=self.port, path=path).url
+
     def close(self):
         """
         Close all pooled connections and disable the pool.
@@ -568,27 +583,24 @@ class HTTPConnectionPool(ConnectionPool, RequestMethods):
             # Close the connection. If a connection is reused on which there
             # was a Certificate error, the next request will certainly raise
             # another Certificate error.
-            if conn:
-                conn.close()
-                conn = None
+            conn = conn and conn.close()
+            release_conn = True
             raise SSLError(e)
 
         except SSLError:
             # Treat SSLError separately from BaseSSLError to preserve
             # traceback.
-            if conn:
-                conn.close()
-                conn = None
+            conn = conn and conn.close()
+            release_conn = True
             raise
 
-        except (TimeoutError, HTTPException, SocketError, ConnectionError) as e:
-            if conn:
-                # Discard the connection for these exceptions. It will be
-                # be replaced during the next _get_conn() call.
-                conn.close()
-                conn = None
+        except (TimeoutError, HTTPException, SocketError, ProtocolError) as e:
+            # Discard the connection for these exceptions. It will be
+            # be replaced during the next _get_conn() call.
+            conn = conn and conn.close()
+            release_conn = True
 
-            if isinstance(e, SocketError) and self.proxy:
+            if isinstance(e, (SocketError, NewConnectionError)) and self.proxy:
                 e = ProxyError('Cannot connect to proxy.', e)
             elif isinstance(e, (SocketError, HTTPException)):
                 e = ProtocolError('Connection aborted.', e)
@@ -626,26 +638,31 @@ class HTTPConnectionPool(ConnectionPool, RequestMethods):
                 retries = retries.increment(method, url, response=response, _pool=self)
             except MaxRetryError:
                 if retries.raise_on_redirect:
+                    # Release the connection for this response, since we're not
+                    # returning it to be released manually.
+                    response.release_conn()
                     raise
                 return response
 
             log.info("Redirecting %s -> %s" % (url, redirect_location))
-            return self.urlopen(method, redirect_location, body, headers,
-                    retries=retries, redirect=redirect,
-                    assert_same_host=assert_same_host,
-                    timeout=timeout, pool_timeout=pool_timeout,
-                    release_conn=release_conn, **response_kw)
+            return self.urlopen(
+                method, redirect_location, body, headers,
+                retries=retries, redirect=redirect,
+                assert_same_host=assert_same_host,
+                timeout=timeout, pool_timeout=pool_timeout,
+                release_conn=release_conn, **response_kw)
 
         # Check if we should retry the HTTP response.
         if retries.is_forced_retry(method, status_code=response.status):
             retries = retries.increment(method, url, response=response, _pool=self)
             retries.sleep()
             log.info("Forced retry: %s" % url)
-            return self.urlopen(method, url, body, headers,
-                    retries=retries, redirect=redirect,
-                    assert_same_host=assert_same_host,
-                    timeout=timeout, pool_timeout=pool_timeout,
-                    release_conn=release_conn, **response_kw)
+            return self.urlopen(
+                method, url, body, headers,
+                retries=retries, redirect=redirect,
+                assert_same_host=assert_same_host,
+                timeout=timeout, pool_timeout=pool_timeout,
+                release_conn=release_conn, **response_kw)
 
         return response
 
@@ -662,10 +679,10 @@ class HTTPSConnectionPool(HTTPConnectionPool):
     ``assert_hostname`` and ``host`` in this order to verify connections.
     If ``assert_hostname`` is False, no verification is done.
 
-    The ``key_file``, ``cert_file``, ``cert_reqs``, ``ca_certs`` and
-    ``ssl_version`` are only used if :mod:`ssl` is available and are fed into
-    :meth:`urllib3.util.ssl_wrap_socket` to upgrade the connection socket
-    into an SSL socket.
+    The ``key_file``, ``cert_file``, ``cert_reqs``, ``ca_certs``,
+    ``ca_cert_dir``, and ``ssl_version`` are only used if :mod:`ssl` is
+    available and are fed into :meth:`urllib3.util.ssl_wrap_socket` to upgrade
+    the connection socket into an SSL socket.
     """
 
     scheme = 'https'
@@ -678,15 +695,20 @@ class HTTPSConnectionPool(HTTPConnectionPool):
                  key_file=None, cert_file=None, cert_reqs=None,
                  ca_certs=None, ssl_version=None,
                  assert_hostname=None, assert_fingerprint=None,
-                 **conn_kw):
+                 ca_cert_dir=None, **conn_kw):
 
         HTTPConnectionPool.__init__(self, host, port, strict, timeout, maxsize,
                                     block, headers, retries, _proxy, _proxy_headers,
                                     **conn_kw)
+
+        if ca_certs and cert_reqs is None:
+            cert_reqs = 'CERT_REQUIRED'
+
         self.key_file = key_file
         self.cert_file = cert_file
         self.cert_reqs = cert_reqs
         self.ca_certs = ca_certs
+        self.ca_cert_dir = ca_cert_dir
         self.ssl_version = ssl_version
         self.assert_hostname = assert_hostname
         self.assert_fingerprint = assert_fingerprint
@@ -702,6 +724,7 @@ class HTTPSConnectionPool(HTTPConnectionPool):
                           cert_file=self.cert_file,
                           cert_reqs=self.cert_reqs,
                           ca_certs=self.ca_certs,
+                          ca_cert_dir=self.ca_cert_dir,
                           assert_hostname=self.assert_hostname,
                           assert_fingerprint=self.assert_fingerprint)
             conn.ssl_version = self.ssl_version
@@ -760,8 +783,7 @@ class HTTPSConnectionPool(HTTPConnectionPool):
         if not getattr(conn, 'sock', None):  # AppEngine might not have  `.sock`
             conn.connect()
 
-        """
-        if not conn.is_verified:
+        """        if not conn.is_verified:
             warnings.warn((
                 'Unverified HTTPS request is being made. '
                 'Adding certificate verification is strongly advised. See: '
@@ -769,7 +791,6 @@ class HTTPSConnectionPool(HTTPConnectionPool):
                 InsecureRequestWarning)
         """
 
-
 def connection_from_url(url, **kw):
     """
     Given a url, return an :class:`.ConnectionPool` instance of its host.

lib/requests/packages/urllib3/contrib/appengine.py

@@ -0,0 +1,223 @@
+from __future__ import absolute_import
+import logging
+import os
+import warnings
+
+from ..exceptions import (
+    HTTPError,
+    HTTPWarning,
+    MaxRetryError,
+    ProtocolError,
+    TimeoutError,
+    SSLError
+)
+
+from ..packages.six import BytesIO
+from ..request import RequestMethods
+from ..response import HTTPResponse
+from ..util.timeout import Timeout
+from ..util.retry import Retry
+
+try:
+    from google.appengine.api import urlfetch
+except ImportError:
+    urlfetch = None
+
+
+log = logging.getLogger(__name__)
+
+
+class AppEnginePlatformWarning(HTTPWarning):
+    pass
+
+
+class AppEnginePlatformError(HTTPError):
+    pass
+
+
+class AppEngineManager(RequestMethods):
+    """
+    Connection manager for Google App Engine sandbox applications.
+
+    This manager uses the URLFetch service directly instead of using the
+    emulated httplib, and is subject to URLFetch limitations as described in
+    the App Engine documentation here:
+
+        https://cloud.google.com/appengine/docs/python/urlfetch
+
+    Notably it will raise an AppEnginePlatformError if:
+        * URLFetch is not available.
+        * If you attempt to use this on GAEv2 (Managed VMs), as full socket
+          support is available.
+        * If a request size is more than 10 megabytes.
+        * If a response size is more than 32 megabtyes.
+        * If you use an unsupported request method such as OPTIONS.
+
+    Beyond those cases, it will raise normal urllib3 errors.
+    """
+
+    def __init__(self, headers=None, retries=None, validate_certificate=True):
+        if not urlfetch:
+            raise AppEnginePlatformError(
+                "URLFetch is not available in this environment.")
+
+        if is_prod_appengine_mvms():
+            raise AppEnginePlatformError(
+                "Use normal urllib3.PoolManager instead of AppEngineManager"
+                "on Managed VMs, as using URLFetch is not necessary in "
+                "this environment.")
+
+        warnings.warn(
+            "urllib3 is using URLFetch on Google App Engine sandbox instead "
+            "of sockets. To use sockets directly instead of URLFetch see "
+            "https://urllib3.readthedocs.org/en/latest/contrib.html.",
+            AppEnginePlatformWarning)
+
+        RequestMethods.__init__(self, headers)
+        self.validate_certificate = validate_certificate
+
+        self.retries = retries or Retry.DEFAULT
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        # Return False to re-raise any potential exceptions
+        return False
+
+    def urlopen(self, method, url, body=None, headers=None,
+                retries=None, redirect=True, timeout=Timeout.DEFAULT_TIMEOUT,
+                **response_kw):
+
+        retries = self._get_retries(retries, redirect)
+
+        try:
+            response = urlfetch.fetch(
+                url,
+                payload=body,
+                method=method,
+                headers=headers or {},
+                allow_truncated=False,
+                follow_redirects=(
+                    redirect and
+                    retries.redirect != 0 and
+                    retries.total),
+                deadline=self._get_absolute_timeout(timeout),
+                validate_certificate=self.validate_certificate,
+            )
+        except urlfetch.DeadlineExceededError as e:
+            raise TimeoutError(self, e)
+
+        except urlfetch.InvalidURLError as e:
+            if 'too large' in str(e):
+                raise AppEnginePlatformError(
+                    "URLFetch request too large, URLFetch only "
+                    "supports requests up to 10mb in size.", e)
+            raise ProtocolError(e)
+
+        except urlfetch.DownloadError as e:
+            if 'Too many redirects' in str(e):
+                raise MaxRetryError(self, url, reason=e)
+            raise ProtocolError(e)
+
+        except urlfetch.ResponseTooLargeError as e:
+            raise AppEnginePlatformError(
+                "URLFetch response too large, URLFetch only supports"
+                "responses up to 32mb in size.", e)
+
+        except urlfetch.SSLCertificateError as e:
+            raise SSLError(e)
+
+        except urlfetch.InvalidMethodError as e:
+            raise AppEnginePlatformError(
+                "URLFetch does not support method: %s" % method, e)
+
+        http_response = self._urlfetch_response_to_http_response(
+            response, **response_kw)
+
+        # Check for redirect response
+        if (http_response.get_redirect_location() and
+                retries.raise_on_redirect and redirect):
+            raise MaxRetryError(self, url, "too many redirects")
+
+        # Check if we should retry the HTTP response.
+        if retries.is_forced_retry(method, status_code=http_response.status):
+            retries = retries.increment(
+                method, url, response=http_response, _pool=self)
+            log.info("Forced retry: %s" % url)
+            retries.sleep()
+            return self.urlopen(
+                method, url,
+                body=body, headers=headers,
+                retries=retries, redirect=redirect,
+                timeout=timeout, **response_kw)
+
+        return http_response
+
+    def _urlfetch_response_to_http_response(self, urlfetch_resp, **response_kw):
+
+        if is_prod_appengine():
+            # Production GAE handles deflate encoding automatically, but does
+            # not remove the encoding header.
+            content_encoding = urlfetch_resp.headers.get('content-encoding')
+
+            if content_encoding == 'deflate':
+                del urlfetch_resp.headers['content-encoding']
+
+        return HTTPResponse(
+            # In order for decoding to work, we must present the content as
+            # a file-like object.
+            body=BytesIO(urlfetch_resp.content),
+            headers=urlfetch_resp.headers,
+            status=urlfetch_resp.status_code,
+            **response_kw
+        )
+
+    def _get_absolute_timeout(self, timeout):
+        if timeout is Timeout.DEFAULT_TIMEOUT:
+            return 5  # 5s is the default timeout for URLFetch.
+        if isinstance(timeout, Timeout):
+            if timeout.read is not timeout.connect:
+                warnings.warn(
+                    "URLFetch does not support granular timeout settings, "
+                    "reverting to total timeout.", AppEnginePlatformWarning)
+            return timeout.total
+        return timeout
+
+    def _get_retries(self, retries, redirect):
+        if not isinstance(retries, Retry):
+            retries = Retry.from_int(
+                retries, redirect=redirect, default=self.retries)
+
+        if retries.connect or retries.read or retries.redirect:
+            warnings.warn(
+                "URLFetch only supports total retries and does not "
+                "recognize connect, read, or redirect retry parameters.",
+                AppEnginePlatformWarning)
+
+        return retries
+
+
+def is_appengine():
+    return (is_local_appengine() or
+            is_prod_appengine() or
+            is_prod_appengine_mvms())
+
+
+def is_appengine_sandbox():
+    return is_appengine() and not is_prod_appengine_mvms()
+
+
+def is_local_appengine():
+    return ('APPENGINE_RUNTIME' in os.environ and
+            'Development/' in os.environ['SERVER_SOFTWARE'])
+
+
+def is_prod_appengine():
+    return ('APPENGINE_RUNTIME' in os.environ and
+            'Google App Engine/' in os.environ['SERVER_SOFTWARE'] and
+            not is_prod_appengine_mvms())
+
+
+def is_prod_appengine_mvms():
+    return os.environ.get('GAE_VM', False) == 'true'

lib/requests/packages/urllib3/contrib/ntlmpool.py

@@ -3,6 +3,7 @@ NTLM authenticating pool, contributed by erikcederstran
 
 Issue #10, see: http://code.google.com/p/urllib3/issues/detail?id=10
 """
+from __future__ import absolute_import
 
 try:
     from http.client import HTTPSConnection

lib/requests/packages/urllib3/contrib/pyopenssl.py

@@ -43,6 +43,7 @@ Module Variables
 .. _crime attack: https://en.wikipedia.org/wiki/CRIME_(security_exploit)
 
 '''
+from __future__ import absolute_import
 
 try:
     from ndg.httpsclient.ssl_peer_verification import SUBJ_ALT_NAME_SUPPORT
@@ -53,7 +54,7 @@ except SyntaxError as e:
 import OpenSSL.SSL
 from pyasn1.codec.der import decoder as der_decoder
 from pyasn1.type import univ, constraint
-from socket import _fileobject, timeout
+from socket import _fileobject, timeout, error as SocketError
 import ssl
 import select
 
@@ -71,6 +72,12 @@ _openssl_versions = {
     ssl.PROTOCOL_TLSv1: OpenSSL.SSL.TLSv1_METHOD,
 }
 
+if hasattr(ssl, 'PROTOCOL_TLSv1_1') and hasattr(OpenSSL.SSL, 'TLSv1_1_METHOD'):
+    _openssl_versions[ssl.PROTOCOL_TLSv1_1] = OpenSSL.SSL.TLSv1_1_METHOD
+
+if hasattr(ssl, 'PROTOCOL_TLSv1_2') and hasattr(OpenSSL.SSL, 'TLSv1_2_METHOD'):
+    _openssl_versions[ssl.PROTOCOL_TLSv1_2] = OpenSSL.SSL.TLSv1_2_METHOD
+
 try:
     _openssl_versions.update({ssl.PROTOCOL_SSLv3: OpenSSL.SSL.SSLv3_METHOD})
 except AttributeError:
@@ -79,12 +86,14 @@ except AttributeError:
 _openssl_verify = {
     ssl.CERT_NONE: OpenSSL.SSL.VERIFY_NONE,
     ssl.CERT_OPTIONAL: OpenSSL.SSL.VERIFY_PEER,
-    ssl.CERT_REQUIRED: OpenSSL.SSL.VERIFY_PEER
-                       + OpenSSL.SSL.VERIFY_FAIL_IF_NO_PEER_CERT,
+    ssl.CERT_REQUIRED:
+        OpenSSL.SSL.VERIFY_PEER + OpenSSL.SSL.VERIFY_FAIL_IF_NO_PEER_CERT,
 }
 
 DEFAULT_SSL_CIPHER_LIST = util.ssl_.DEFAULT_CIPHERS
 
+# OpenSSL will only write 16K at a time
+SSL_WRITE_BLOCKSIZE = 16384
 
 orig_util_HAS_SNI = util.HAS_SNI
 orig_connection_ssl_wrap_socket = connection.ssl_wrap_socket
@@ -104,7 +113,7 @@ def extract_from_urllib3():
     util.HAS_SNI = orig_util_HAS_SNI
 
 
-### Note: This is a slightly bug-fixed version of same from ndg-httpsclient.
+# Note: This is a slightly bug-fixed version of same from ndg-httpsclient.
 class SubjectAltName(BaseSubjectAltName):
     '''ASN.1 implementation for subjectAltNames support'''
 
@@ -115,7 +124,7 @@ class SubjectAltName(BaseSubjectAltName):
         constraint.ValueSizeConstraint(1, 1024)
 
 
-### Note: This is a slightly bug-fixed version of same from ndg-httpsclient.
+# Note: This is a slightly bug-fixed version of same from ndg-httpsclient.
 def get_subj_alt_name(peer_cert):
     # Search through extensions
     dns_name = []
@@ -173,7 +182,7 @@ class WrappedSocket(object):
             if self.suppress_ragged_eofs and e.args == (-1, 'Unexpected EOF'):
                 return b''
             else:
-                raise
+                raise SocketError(e)
         except OpenSSL.SSL.ZeroReturnError as e:
             if self.connection.get_shutdown() == OpenSSL.SSL.RECEIVED_SHUTDOWN:
                 return b''
@@ -204,13 +213,21 @@ class WrappedSocket(object):
                 continue
 
     def sendall(self, data):
-        while len(data):
-            sent = self._send_until_done(data)
-            data = data[sent:]
+        total_sent = 0
+        while total_sent < len(data):
+            sent = self._send_until_done(data[total_sent:total_sent + SSL_WRITE_BLOCKSIZE])
+            total_sent += sent
+
+    def shutdown(self):
+        # FIXME rethrow compatible exceptions should we ever use this
+        self.connection.shutdown()
 
     def close(self):
         if self._makefile_refs < 1:
-            return self.connection.shutdown()
+            try:
+                return self.connection.close()
+            except OpenSSL.SSL.Error:
+                return
         else:
             self._makefile_refs -= 1
 
@@ -251,7 +268,7 @@ def _verify_callback(cnx, x509, err_no, err_depth, return_code):
 
 def ssl_wrap_socket(sock, keyfile=None, certfile=None, cert_reqs=None,
                     ca_certs=None, server_hostname=None,
-                    ssl_version=None):
+                    ssl_version=None, ca_cert_dir=None):
     ctx = OpenSSL.SSL.Context(_openssl_versions[ssl_version])
     if certfile:
         keyfile = keyfile or certfile  # Match behaviour of the normal python ssl library
@@ -260,9 +277,9 @@ def ssl_wrap_socket(sock, keyfile=None, certfile=None, cert_reqs=None,
         ctx.use_privatekey_file(keyfile)
     if cert_reqs != ssl.CERT_NONE:
         ctx.set_verify(_openssl_verify[cert_reqs], _verify_callback)
-    if ca_certs:
+    if ca_certs or ca_cert_dir:
         try:
-            ctx.load_verify_locations(ca_certs, None)
+            ctx.load_verify_locations(ca_certs, ca_cert_dir)
         except OpenSSL.SSL.Error as e:
             raise ssl.SSLError('bad ca_certs: %r' % ca_certs, e)
     else:
@@ -287,7 +304,7 @@ def ssl_wrap_socket(sock, keyfile=None, certfile=None, cert_reqs=None,
                 raise timeout('select timed out')
             continue
         except OpenSSL.SSL.Error as e:
-            raise ssl.SSLError('bad handshake', e)
+            raise ssl.SSLError('bad handshake: %r' % e)
         break
 
     return WrappedSocket(cnx, sock)

lib/requests/packages/urllib3/exceptions.py

@@ -1,16 +1,17 @@
+from __future__ import absolute_import
+# Base Exceptions
 
-## Base Exceptions
 
 class HTTPError(Exception):
     "Base exception used by this module."
     pass
 
+
 class HTTPWarning(Warning):
     "Base warning used by this module."
     pass
 
 
-
 class PoolError(HTTPError):
     "Base exception for errors caused within a pool."
     def __init__(self, pool, message):
@@ -57,7 +58,7 @@ class ProtocolError(HTTPError):
 ConnectionError = ProtocolError
 
 
-## Leaf Exceptions
+# Leaf Exceptions
 
 class MaxRetryError(RequestError):
     """Raised when the maximum number of retries is exceeded.
@@ -113,6 +114,11 @@ class ConnectTimeoutError(TimeoutError):
     pass
 
 
+class NewConnectionError(ConnectTimeoutError, PoolError):
+    "Raised when we fail to establish a new connection. Usually ECONNREFUSED."
+    pass
+
+
 class EmptyPoolError(PoolError):
     "Raised when a pool runs out of connections and no more are allowed."
     pass
@@ -149,6 +155,11 @@ class SecurityWarning(HTTPWarning):
     pass
 
 
+class SubjectAltNameWarning(SecurityWarning):
+    "Warned when connecting to a host with a certificate missing a SAN."
+    pass
+
+
 class InsecureRequestWarning(SecurityWarning):
     "Warned when making an unverified HTTPS request."
     pass
@@ -164,6 +175,27 @@ class InsecurePlatformWarning(SecurityWarning):
     pass
 
 
+class SNIMissingWarning(HTTPWarning):
+    "Warned when making a HTTPS request without SNI available."
+    pass
+
+
 class ResponseNotChunked(ProtocolError, ValueError):
     "Response needs to be chunked in order to read it as chunks."
     pass
+
+
+class ProxySchemeUnknown(AssertionError, ValueError):
+    "ProxyManager does not support the supplied scheme"
+    # TODO(t-8ch): Stop inheriting from AssertionError in v2.0.
+
+    def __init__(self, scheme):
+        message = "Not supported proxy scheme %s" % scheme
+        super(ProxySchemeUnknown, self).__init__(message)
+
+
+class HeaderParsingError(HTTPError):
+    "Raised by assert_header_parsing, but we convert it to a log.warning statement."
+    def __init__(self, defects, unparsed_data):
+        message = '%s, unparsed data: %r' % (defects or 'Unknown', unparsed_data)
+        super(HeaderParsingError, self).__init__(message)

lib/requests/packages/urllib3/fields.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 import email.utils
 import mimetypes
 

lib/requests/packages/urllib3/filepost.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 import codecs
 
 from uuid import uuid4

lib/requests/packages/urllib3/packages/__init__.py

@@ -2,3 +2,4 @@ from __future__ import absolute_import
 
 from . import ssl_match_hostname
 
+__all__ = ('ssl_match_hostname', )

lib/requests/packages/urllib3/packages/ssl_match_hostname/.gitignore

@@ -0,0 +1 @@
+env

lib/requests/packages/urllib3/poolmanager.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 import logging
 
 try:  # Python 3
@@ -8,7 +9,7 @@ except ImportError:
 from ._collections import RecentlyUsedContainer
 from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool
 from .connectionpool import port_by_scheme
-from .exceptions import LocationValueError, MaxRetryError
+from .exceptions import LocationValueError, MaxRetryError, ProxySchemeUnknown
 from .request import RequestMethods
 from .util.url import parse_url
 from .util.retry import Retry
@@ -25,7 +26,7 @@ pool_classes_by_scheme = {
 log = logging.getLogger(__name__)
 
 SSL_KEYWORDS = ('key_file', 'cert_file', 'cert_reqs', 'ca_certs',
-                'ssl_version')
+                'ssl_version', 'ca_cert_dir')
 
 
 class PoolManager(RequestMethods):
@@ -227,8 +228,8 @@ class ProxyManager(PoolManager):
             port = port_by_scheme.get(proxy.scheme, 80)
             proxy = proxy._replace(port=port)
 
-        assert proxy.scheme in ("http", "https"), \
-            'Not supported proxy scheme %s' % proxy.scheme
+        if proxy.scheme not in ("http", "https"):
+            raise ProxySchemeUnknown(proxy.scheme)
 
         self.proxy = proxy
         self.proxy_headers = proxy_headers or {}

lib/requests/packages/urllib3/request.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 try:
     from urllib.parse import urlencode
 except ImportError:
@@ -71,14 +72,22 @@ class RequestMethods(object):
                                             headers=headers,
                                             **urlopen_kw)
 
-    def request_encode_url(self, method, url, fields=None, **urlopen_kw):
+    def request_encode_url(self, method, url, fields=None, headers=None,
+                           **urlopen_kw):
         """
         Make a request using :meth:`urlopen` with the ``fields`` encoded in
         the url. This is useful for request methods like GET, HEAD, DELETE, etc.
         """
+        if headers is None:
+            headers = self.headers
+
+        extra_kw = {'headers': headers}
+        extra_kw.update(urlopen_kw)
+
         if fields:
             url += '?' + urlencode(fields)
-        return self.urlopen(method, url, **urlopen_kw)
+
+        return self.urlopen(method, url, **extra_kw)
 
     def request_encode_body(self, method, url, fields=None, headers=None,
                             encode_multipart=True, multipart_boundary=None,
@@ -125,7 +134,8 @@ class RequestMethods(object):
 
         if fields:
             if 'body' in urlopen_kw:
-                raise TypeError('request got values for both \'fields\' and \'body\', can only specify one.')
+                raise TypeError(
+                    "request got values for both 'fields' and 'body', can only specify one.")
 
             if encode_multipart:
                 body, content_type = encode_multipart_formdata(fields, boundary=multipart_boundary)

lib/requests/packages/urllib3/response.py

@@ -1,18 +1,18 @@
-try:
-    import http.client as httplib
-except ImportError:
-    import httplib
+from __future__ import absolute_import
+from contextlib import contextmanager
 import zlib
 import io
 from socket import timeout as SocketTimeout
+from socket import error as SocketError
 
 from ._collections import HTTPHeaderDict
 from .exceptions import (
     ProtocolError, DecodeError, ReadTimeoutError, ResponseNotChunked
 )
 from .packages.six import string_types as basestring, binary_type, PY3
+from .packages.six.moves import http_client as httplib
 from .connection import HTTPException, BaseSSLError
-from .util.response import is_fp_closed
+from .util.response import is_fp_closed, is_response_to_head
 
 
 class DeflateDecoder(object):
@@ -132,8 +132,8 @@ class HTTPResponse(io.IOBase):
         if "chunked" in encodings:
             self.chunked = True
 
-        # We certainly don't want to preload content when the response is chunked.
-        if not self.chunked and preload_content and not self._body:
+        # If requested, preload the body.
+        if preload_content and not self._body:
             self._body = self.read(decode_content=decode_content)
 
     def get_redirect_location(self):
@@ -196,12 +196,70 @@ class HTTPResponse(io.IOBase):
                 "Received response with content-encoding: %s, but "
                 "failed to decode it." % content_encoding, e)
 
-        if flush_decoder and decode_content and self._decoder:
-            buf = self._decoder.decompress(binary_type())
-            data += buf + self._decoder.flush()
+        if flush_decoder and decode_content:
+            data += self._flush_decoder()
 
         return data
 
+    def _flush_decoder(self):
+        """
+        Flushes the decoder. Should only be called if the decoder is actually
+        being used.
+        """
+        if self._decoder:
+            buf = self._decoder.decompress(b'')
+            return buf + self._decoder.flush()
+
+        return b''
+
+    @contextmanager
+    def _error_catcher(self):
+        """
+        Catch low-level python exceptions, instead re-raising urllib3
+        variants, so that low-level exceptions are not leaked in the
+        high-level api.
+
+        On exit, release the connection back to the pool.
+        """
+        try:
+            try:
+                yield
+
+            except SocketTimeout:
+                # FIXME: Ideally we'd like to include the url in the ReadTimeoutError but
+                # there is yet no clean way to get at it from this context.
+                raise ReadTimeoutError(self._pool, None, 'Read timed out.')
+
+            except BaseSSLError as e:
+                # FIXME: Is there a better way to differentiate between SSLErrors?
+                if 'read operation timed out' not in str(e):  # Defensive:
+                    # This shouldn't happen but just in case we're missing an edge
+                    # case, let's avoid swallowing SSL errors.
+                    raise
+
+                raise ReadTimeoutError(self._pool, None, 'Read timed out.')
+
+            except (HTTPException, SocketError) as e:
+                # This includes IncompleteRead.
+                raise ProtocolError('Connection broken: %r' % e, e)
+
+        except Exception:
+            # The response may not be closed but we're not going to use it anymore
+            # so close it now to ensure that the connection is released back to the pool.
+            if self._original_response and not self._original_response.isclosed():
+                self._original_response.close()
+
+            # Closing the response may not actually be sufficient to close
+            # everything, so if we have a hold of the connection close that
+            # too.
+            if self._connection is not None:
+                self._connection.close()
+
+            raise
+        finally:
+            if self._original_response and self._original_response.isclosed():
+                self.release_conn()
+
     def read(self, amt=None, decode_content=None, cache_content=False):
         """
         Similar to :meth:`httplib.HTTPResponse.read`, but with two additional
@@ -231,45 +289,28 @@ class HTTPResponse(io.IOBase):
             return
 
         flush_decoder = False
-
-        try:
-            try:
-                if amt is None:
-                    # cStringIO doesn't like amt=None
-                    data = self._fp.read()
+        data = None
+
+        with self._error_catcher():
+            if amt is None:
+                # cStringIO doesn't like amt=None
+                data = self._fp.read()
+                flush_decoder = True
+            else:
+                cache_content = False
+                data = self._fp.read(amt)
+                if amt != 0 and not data:  # Platform-specific: Buggy versions of Python.
+                    # Close the connection when no data is returned
+                    #
+                    # This is redundant to what httplib/http.client _should_
+                    # already do.  However, versions of python released before
+                    # December 15, 2012 (http://bugs.python.org/issue16298) do
+                    # not properly close the connection in all cases. There is
+                    # no harm in redundantly calling close.
+                    self._fp.close()
                     flush_decoder = True
-                else:
-                    cache_content = False
-                    data = self._fp.read(amt)
-                    if amt != 0 and not data:  # Platform-specific: Buggy versions of Python.
-                        # Close the connection when no data is returned
-                        #
-                        # This is redundant to what httplib/http.client _should_
-                        # already do.  However, versions of python released before
-                        # December 15, 2012 (http://bugs.python.org/issue16298) do
-                        # not properly close the connection in all cases. There is
-                        # no harm in redundantly calling close.
-                        self._fp.close()
-                        flush_decoder = True
-
-            except SocketTimeout:
-                # FIXME: Ideally we'd like to include the url in the ReadTimeoutError but
-                # there is yet no clean way to get at it from this context.
-                raise ReadTimeoutError(self._pool, None, 'Read timed out.')
-
-            except BaseSSLError as e:
-                # FIXME: Is there a better way to differentiate between SSLErrors?
-                if 'read operation timed out' not in str(e):  # Defensive:
-                    # This shouldn't happen but just in case we're missing an edge
-                    # case, let's avoid swallowing SSL errors.
-                    raise
-
-                raise ReadTimeoutError(self._pool, None, 'Read timed out.')
-
-            except HTTPException as e:
-                # This includes IncompleteRead.
-                raise ProtocolError('Connection broken: %r' % e, e)
 
+        if data:
             self._fp_bytes_read += len(data)
 
             data = self._decode(data, decode_content, flush_decoder)
@@ -277,11 +318,7 @@ class HTTPResponse(io.IOBase):
             if cache_content:
                 self._body = data
 
-            return data
-
-        finally:
-            if self._original_response and self._original_response.isclosed():
-                self.release_conn()
+        return data
 
     def stream(self, amt=2**16, decode_content=None):
         """
@@ -319,10 +356,11 @@ class HTTPResponse(io.IOBase):
         with ``original_response=r``.
         """
         headers = r.msg
+
         if not isinstance(headers, HTTPHeaderDict):
-            if PY3: # Python 3
+            if PY3:  # Python 3
                 headers = HTTPHeaderDict(headers.items())
-            else: # Python 2
+            else:  # Python 2
                 headers = HTTPHeaderDict.from_httplib(headers)
 
         # HTTPResponse objects in Python 3 don't have a .strict attribute
@@ -434,33 +472,43 @@ class HTTPResponse(io.IOBase):
         self._init_decoder()
         # FIXME: Rewrite this method and make it a class with a better structured logic.
         if not self.chunked:
-            raise ResponseNotChunked("Response is not chunked. "
+            raise ResponseNotChunked(
+                "Response is not chunked. "
                 "Header 'transfer-encoding: chunked' is missing.")
 
-        if self._original_response and self._original_response._method.upper() == 'HEAD':
-            # Don't bother reading the body of a HEAD request.
-            # FIXME: Can we do this somehow without accessing private httplib _method?
+        # Don't bother reading the body of a HEAD request.
+        if self._original_response and is_response_to_head(self._original_response):
             self._original_response.close()
             return
 
-        while True:
-            self._update_chunk_length()
-            if self.chunk_left == 0:
-                break
-            chunk = self._handle_chunk(amt)
-            yield self._decode(chunk, decode_content=decode_content,
-                               flush_decoder=True)
-
-        # Chunk content ends with \r\n: discard it.
-        while True:
-            line = self._fp.fp.readline()
-            if not line:
-                # Some sites may not end with '\r\n'.
-                break
-            if line == b'\r\n':
-                break
-
-        # We read everything; close the "file".
-        if self._original_response:
-            self._original_response.close()
-        self.release_conn()
+        with self._error_catcher():
+            while True:
+                self._update_chunk_length()
+                if self.chunk_left == 0:
+                    break
+                chunk = self._handle_chunk(amt)
+                decoded = self._decode(chunk, decode_content=decode_content,
+                                       flush_decoder=False)
+                if decoded:
+                    yield decoded
+
+            if decode_content:
+                # On CPython and PyPy, we should never need to flush the
+                # decoder. However, on Jython we *might* need to, so
+                # lets defensively do it anyway.
+                decoded = self._flush_decoder()
+                if decoded:  # Platform-specific: Jython.
+                    yield decoded
+
+            # Chunk content ends with \r\n: discard it.
+            while True:
+                line = self._fp.fp.readline()
+                if not line:
+                    # Some sites may not end with '\r\n'.
+                    break
+                if line == b'\r\n':
+                    break
+
+            # We read everything; close the "file".
+            if self._original_response:
+                self._original_response.close()

lib/requests/packages/urllib3/util/__init__.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 # For backwards compatibility, provide imports that used to be here.
 from .connection import is_connection_dropped
 from .request import make_headers
@@ -22,3 +23,22 @@ from .url import (
     split_first,
     Url,
 )
+
+__all__ = (
+    'HAS_SNI',
+    'SSLContext',
+    'Retry',
+    'Timeout',
+    'Url',
+    'assert_fingerprint',
+    'current_time',
+    'is_connection_dropped',
+    'is_fp_closed',
+    'get_host',
+    'parse_url',
+    'make_headers',
+    'resolve_cert_reqs',
+    'resolve_ssl_version',
+    'split_first',
+    'ssl_wrap_socket',
+)

lib/requests/packages/urllib3/util/connection.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 import socket
 try:
     from select import poll, POLLIN
@@ -60,6 +61,8 @@ def create_connection(address, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
     """
 
     host, port = address
+    if host.startswith('['):
+        host = host.strip('[]')
     err = None
     for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
         af, socktype, proto, canonname, sa = res
@@ -78,16 +81,16 @@ def create_connection(address, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
             sock.connect(sa)
             return sock
 
-        except socket.error as _:
-            err = _
+        except socket.error as e:
+            err = e
             if sock is not None:
                 sock.close()
                 sock = None
 
     if err is not None:
         raise err
-    else:
-        raise socket.error("getaddrinfo returns an empty list")
+
+    raise socket.error("getaddrinfo returns an empty list")
 
 
 def _set_socket_options(sock, options):

lib/requests/packages/urllib3/util/request.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 from base64 import b64encode
 
 from ..packages.six import b

lib/requests/packages/urllib3/util/response.py

@@ -1,3 +1,9 @@
+from __future__ import absolute_import
+from ..packages.six.moves import http_client as httplib
+
+from ..exceptions import HeaderParsingError
+
+
 def is_fp_closed(obj):
     """
     Checks whether a given file-like object is closed.
@@ -20,3 +26,49 @@ def is_fp_closed(obj):
         pass
 
     raise ValueError("Unable to determine whether fp is closed.")
+
+
+def assert_header_parsing(headers):
+    """
+    Asserts whether all headers have been successfully parsed.
+    Extracts encountered errors from the result of parsing headers.
+
+    Only works on Python 3.
+
+    :param headers: Headers to verify.
+    :type headers: `httplib.HTTPMessage`.
+
+    :raises urllib3.exceptions.HeaderParsingError:
+        If parsing errors are found.
+    """
+
+    # This will fail silently if we pass in the wrong kind of parameter.
+    # To make debugging easier add an explicit check.
+    if not isinstance(headers, httplib.HTTPMessage):
+        raise TypeError('expected httplib.Message, got {0}.'.format(
+            type(headers)))
+
+    defects = getattr(headers, 'defects', None)
+    get_payload = getattr(headers, 'get_payload', None)
+
+    unparsed_data = None
+    if get_payload:  # Platform-specific: Python 3.
+        unparsed_data = get_payload()
+
+    if defects or unparsed_data:
+        raise HeaderParsingError(defects=defects, unparsed_data=unparsed_data)
+
+
+def is_response_to_head(response):
+    """
+    Checks, wether a the request of a response has been a HEAD-request.
+    Handles the quirks of AppEngine.
+
+    :param conn:
+    :type conn: :class:`httplib.HTTPResponse`
+    """
+    # FIXME: Can we do this somehow without accessing private httplib _method?
+    method = response._method
+    if isinstance(method, int):  # Platform-specific: Appengine
+        return method == 3
+    return method.upper() == 'HEAD'

lib/requests/packages/urllib3/util/retry.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 import time
 import logging
 
@@ -94,7 +95,7 @@ class Retry(object):
 
         seconds. If the backoff_factor is 0.1, then :func:`.sleep` will sleep
         for [0.1s, 0.2s, 0.4s, ...] between retries. It will never be longer
-        than :attr:`Retry.MAX_BACKOFF`.
+        than :attr:`Retry.BACKOFF_MAX`.
 
         By default, backoff is disabled (set to 0).
 
@@ -126,7 +127,7 @@ class Retry(object):
         self.method_whitelist = method_whitelist
         self.backoff_factor = backoff_factor
         self.raise_on_redirect = raise_on_redirect
-        self._observed_errors = _observed_errors # TODO: use .history instead?
+        self._observed_errors = _observed_errors  # TODO: use .history instead?
 
     def new(self, **kw):
         params = dict(
@@ -206,7 +207,8 @@ class Retry(object):
 
         return min(retry_counts) < 0
 
-    def increment(self, method=None, url=None, response=None, error=None, _pool=None, _stacktrace=None):
+    def increment(self, method=None, url=None, response=None, error=None,
+                  _pool=None, _stacktrace=None):
         """ Return a new Retry object with incremented retry counters.
 
         :param response: A response object, or None, if the server did not
@@ -274,7 +276,6 @@ class Retry(object):
 
         return new_retry
 
-
     def __repr__(self):
         return ('{cls.__name__}(total={self.total}, connect={self.connect}, '
                 'read={self.read}, redirect={self.redirect})').format(

lib/requests/packages/urllib3/util/ssl_.py

@@ -1,15 +1,42 @@
+from __future__ import absolute_import
+import errno
+import warnings
+import hmac
+
 from binascii import hexlify, unhexlify
 from hashlib import md5, sha1, sha256
 
-from ..exceptions import SSLError, InsecurePlatformWarning
+from ..exceptions import SSLError, InsecurePlatformWarning, SNIMissingWarning
 
 
 SSLContext = None
 HAS_SNI = False
 create_default_context = None
 
-import errno
-import warnings
+# Maps the length of a digest to a possible hash function producing this digest
+HASHFUNC_MAP = {
+    32: md5,
+    40: sha1,
+    64: sha256,
+}
+
+
+def _const_compare_digest_backport(a, b):
+    """
+    Compare two digests of equal length in constant time.
+
+    The digests must be of type str/bytes.
+    Returns True if the digests match, and False otherwise.
+    """
+    result = abs(len(a) - len(b))
+    for l, r in zip(bytearray(a), bytearray(b)):
+        result |= l ^ r
+    return result == 0
+
+
+_const_compare_digest = getattr(hmac, 'compare_digest',
+                                _const_compare_digest_backport)
+
 
 try:  # Test for SSL features
     import ssl
@@ -68,8 +95,11 @@ except ImportError:
             self.certfile = certfile
             self.keyfile = keyfile
 
-        def load_verify_locations(self, location):
-            self.ca_certs = location
+        def load_verify_locations(self, cafile=None, capath=None):
+            self.ca_certs = cafile
+
+            if capath is not None:
+                raise SSLError("CA directories not supported in older Pythons")
 
         def set_ciphers(self, cipher_suite):
             if not self.supports_set_ciphers:
@@ -114,31 +144,21 @@ def assert_fingerprint(cert, fingerprint):
         Fingerprint as string of hexdigits, can be interspersed by colons.
     """
 
-    # Maps the length of a digest to a possible hash function producing
-    # this digest.
-    hashfunc_map = {
-        16: md5,
-        20: sha1,
-        32: sha256,
-    }
-
     fingerprint = fingerprint.replace(':', '').lower()
-    digest_length, odd = divmod(len(fingerprint), 2)
-
-    if odd or digest_length not in hashfunc_map:
-        raise SSLError('Fingerprint is of invalid length.')
+    digest_length = len(fingerprint)
+    hashfunc = HASHFUNC_MAP.get(digest_length)
+    if not hashfunc:
+        raise SSLError(
+            'Fingerprint of invalid length: {0}'.format(fingerprint))
 
     # We need encode() here for py32; works on py2 and p33.
     fingerprint_bytes = unhexlify(fingerprint.encode())
 
-    hashfunc = hashfunc_map[digest_length]
-
     cert_digest = hashfunc(cert).digest()
 
-    if not cert_digest == fingerprint_bytes:
+    if not _const_compare_digest(cert_digest, fingerprint_bytes):
         raise SSLError('Fingerprints did not match. Expected "{0}", got "{1}".'
-                       .format(hexlify(fingerprint_bytes),
-                               hexlify(cert_digest)))
+                       .format(fingerprint, hexlify(cert_digest)))
 
 
 def resolve_cert_reqs(candidate):
@@ -245,10 +265,11 @@ def create_urllib3_context(ssl_version=None, cert_reqs=None,
 
 def ssl_wrap_socket(sock, keyfile=None, certfile=None, cert_reqs=None,
                     ca_certs=None, server_hostname=None,
-                    ssl_version=None, ciphers=None, ssl_context=None):
+                    ssl_version=None, ciphers=None, ssl_context=None,
+                    ca_cert_dir=None):
     """
-    All arguments except for server_hostname and ssl_context have the same
-    meaning as they do when using :func:`ssl.wrap_socket`.
+    All arguments except for server_hostname, ssl_context, and ca_cert_dir have
+    the same meaning as they do when using :func:`ssl.wrap_socket`.
 
     :param server_hostname:
         When SNI is supported, the expected hostname of the certificate
@@ -258,15 +279,19 @@ def ssl_wrap_socket(sock, keyfile=None, certfile=None, cert_reqs=None,
     :param ciphers:
         A string of ciphers we wish the client to support. This is not
         supported on Python 2.6 as the ssl module does not support it.
+    :param ca_cert_dir:
+        A directory containing CA certificates in multiple separate files, as
+        supported by OpenSSL's -CApath flag or the capath argument to
+        SSLContext.load_verify_locations().
     """
     context = ssl_context
     if context is None:
         context = create_urllib3_context(ssl_version, cert_reqs,
                                          ciphers=ciphers)
 
-    if ca_certs:
+    if ca_certs or ca_cert_dir:
         try:
-            context.load_verify_locations(ca_certs)
+            context.load_verify_locations(ca_certs, ca_cert_dir)
         except IOError as e:  # Platform-specific: Python 2.6, 2.7, 3.2
             raise SSLError(e)
         # Py33 raises FileNotFoundError which subclasses OSError
@@ -275,8 +300,20 @@ def ssl_wrap_socket(sock, keyfile=None, certfile=None, cert_reqs=None,
             if e.errno == errno.ENOENT:
                 raise SSLError(e)
             raise
+
     if certfile:
         context.load_cert_chain(certfile, keyfile)
     if HAS_SNI:  # Platform-specific: OpenSSL with enabled SNI
         return context.wrap_socket(sock, server_hostname=server_hostname)
+
+    warnings.warn(
+        'An HTTPS request has been made, but the SNI (Subject Name '
+        'Indication) extension to TLS is not available on this platform. '
+        'This may cause the server to present an incorrect TLS '
+        'certificate, which can cause validation failures. For more '
+        'information, see '
+        'https://urllib3.readthedocs.org/en/latest/security.html'
+        '#snimissingwarning.',
+        SNIMissingWarning
+    )
     return context.wrap_socket(sock)

lib/requests/packages/urllib3/util/timeout.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 # The default socket timeout, used by httplib to indicate that no timeout was
 # specified by the user
 from socket import _GLOBAL_DEFAULT_TIMEOUT
@@ -9,6 +10,7 @@ from ..exceptions import TimeoutStateError
 # urllib3
 _Default = object()
 
+
 def current_time():
     """
     Retrieve the current time. This function is mocked out in unit testing.
@@ -226,9 +228,9 @@ class Timeout(object):
             has not yet been called on this object.
         """
         if (self.total is not None and
-            self.total is not self.DEFAULT_TIMEOUT and
-            self._read is not None and
-            self._read is not self.DEFAULT_TIMEOUT):
+                self.total is not self.DEFAULT_TIMEOUT and
+                self._read is not None and
+                self._read is not self.DEFAULT_TIMEOUT):
             # In case the connect timeout has not yet been established.
             if self._start_connect is None:
                 return self._read

lib/requests/packages/urllib3/util/url.py

@@ -1,3 +1,4 @@
+from __future__ import absolute_import
 from collections import namedtuple
 
 from ..exceptions import LocationParseError
@@ -85,6 +86,7 @@ class Url(namedtuple('Url', url_attrs)):
     def __str__(self):
         return self.url
 
+
 def split_first(s, delims):
     """
     Given a string and an iterable of delimiters, split on the first found
@@ -115,7 +117,7 @@ def split_first(s, delims):
     if min_idx is None or min_idx < 0:
         return s, '', None
 
-    return s[:min_idx], s[min_idx+1:], min_delim
+    return s[:min_idx], s[min_idx + 1:], min_delim
 
 
 def parse_url(url):
@@ -206,6 +208,7 @@ def parse_url(url):
 
     return Url(scheme, auth, host, port, path, query, fragment)
 
+
 def get_host(url):
     """
     Deprecated. Use :func:`.parse_url` instead.

lib/requests/sessions.py

@@ -273,13 +273,13 @@ class Session(SessionRedirectMixin):
       >>> import requests
       >>> s = requests.Session()
       >>> s.get('http://httpbin.org/get')
-      200
+      <Response [200]>
 
     Or as a context manager::
 
       >>> with requests.Session() as s:
       >>>     s.get('http://httpbin.org/get')
-      200
+      <Response [200]>
     """
 
     __attrs__ = [
@@ -299,9 +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.
@@ -325,7 +325,8 @@ class Session(SessionRedirectMixin):
         #: limit, a :class:`TooManyRedirects` exception is raised.
         self.max_redirects = DEFAULT_REDIRECT_LIMIT
 
-        #: Should we trust the environment?
+        #: Trust environment settings for proxy configuration, default
+        #: authentication and similar.
         self.trust_env = True
 
         #: A CookieJar containing all currently outstanding cookies set on this
@@ -410,8 +411,8 @@ 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
@@ -428,18 +429,15 @@ class Session(SessionRedirectMixin):
         :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.
-            A CA_BUNDLE path can also be provided.
+        :param verify: (optional) whether the SSL cert will be verified.
+            A CA_BUNDLE path can also be provided. Defaults to ``True``.
         :param cert: (optional) if String, path to ssl client cert file (.pem).
             If Tuple, ('cert', 'key') pair.
         """
-
-        method = to_native_string(method)
-
         # Create the Request.
         req = Request(
             method = method.upper(),
@@ -636,7 +634,7 @@ class Session(SessionRedirectMixin):
                 'cert': cert}
 
     def get_adapter(self, url):
-        """Returns the appropriate connnection adapter for the given URL."""
+        """Returns the appropriate connection adapter for the given URL."""
         for (prefix, adapter) in self.adapters.items():
 
             if url.lower().startswith(prefix):

lib/requests/status_codes.py

@@ -78,11 +78,12 @@ _codes = {
     507: ('insufficient_storage',),
     509: ('bandwidth_limit_exceeded', 'bandwidth'),
     510: ('not_extended',),
+    511: ('network_authentication_required', 'network_auth', 'network_authentication'),
 }
 
 codes = LookupDict(name='status_codes')
 
-for (code, titles) in list(_codes.items()):
+for code, titles in _codes.items():
     for title in titles:
         setattr(codes, title, code)
         if not title.startswith('\\'):

lib/requests/utils.py

@@ -29,7 +29,7 @@ from .compat import (quote, urlparse, bytes, str, OrderedDict, unquote, is_py2,
                      basestring)
 from .cookies import RequestsCookieJar, cookiejar_from_dict
 from .structures import CaseInsensitiveDict
-from .exceptions import InvalidURL
+from .exceptions import InvalidURL, FileModeWarning
 
 _hush_pyflakes = (RequestsCookieJar,)
 
@@ -48,23 +48,44 @@ def dict_to_sequence(d):
 
 
 def super_len(o):
+    total_length = 0
+    current_position = 0
+
     if hasattr(o, '__len__'):
-        return len(o)
+        total_length = len(o)
+
+    elif hasattr(o, 'len'):
+        total_length = o.len
 
-    if hasattr(o, 'len'):
-        return o.len
+    elif hasattr(o, 'getvalue'):
+        # e.g. BytesIO, cStringIO.StringIO
+        total_length = len(o.getvalue())
 
-    if hasattr(o, 'fileno'):
+    elif hasattr(o, 'fileno'):
         try:
             fileno = o.fileno()
         except io.UnsupportedOperation:
             pass
         else:
-            return os.fstat(fileno).st_size
+            total_length = os.fstat(fileno).st_size
 
-    if hasattr(o, 'getvalue'):
-        # e.g. BytesIO, cStringIO.StringIO
-        return len(o.getvalue())
+            # Having used fstat to determine the file length, we need to
+            # confirm that this file was opened up in binary mode.
+            if 'b' not in o.mode:
+                warnings.warn((
+                    "Requests has determined the content-length for this "
+                    "request using the binary size of the file: however, the "
+                    "file has been opened in text mode (i.e. without the 'b' "
+                    "flag in the mode). This may lead to an incorrect "
+                    "content-length. In Requests 3.0, support will be removed "
+                    "for files in text mode."),
+                    FileModeWarning
+                )
+
+    if hasattr(o, 'tell'):
+        current_position = o.tell()
+
+    return max(0, total_length - current_position)
 
 
 def get_netrc_auth(url, raise_errors=False):
@@ -94,8 +115,12 @@ def get_netrc_auth(url, raise_errors=False):
 
         ri = urlparse(url)
 
-        # Strip port numbers from netloc
-        host = ri.netloc.split(':')[0]
+        # Strip port numbers from netloc. This weird `if...encode`` dance is
+        # used for Python 3.2, which doesn't support unicode literals.
+        splitstr = b':'
+        if isinstance(url, str):
+            splitstr = splitstr.decode('ascii')
+        host = ri.netloc.split(splitstr)[0]
 
         try:
             _netrc = netrc(netrc_path).authenticators(host)
@@ -499,7 +524,9 @@ def should_bypass_proxies(url):
     if no_proxy:
         # We need to check whether we match here. We need to see if we match
         # the end of the netloc, both with and without the port.
-        no_proxy = no_proxy.replace(' ', '').split(',')
+        no_proxy = (
+            host for host in no_proxy.replace(' ', '').split(',') if host
+        )
 
         ip = netloc.split(':')[0]
         if is_ipv4_address(ip):
@@ -537,36 +564,22 @@ def get_environ_proxies(url):
     else:
         return getproxies()
 
+def select_proxy(url, proxies):
+    """Select a proxy for the url, if applicable.
+
+    :param url: The url being for the request
+    :param proxies: A dictionary of schemes or schemes and hosts to proxy URLs
+    """
+    proxies = proxies or {}
+    urlparts = urlparse(url)
+    proxy = proxies.get(urlparts.scheme+'://'+urlparts.hostname)
+    if proxy is None:
+        proxy = proxies.get(urlparts.scheme)
+    return proxy
 
 def default_user_agent(name="python-requests"):
     """Return a string representing the default user agent."""
-    _implementation = platform.python_implementation()
-
-    if _implementation == 'CPython':
-        _implementation_version = platform.python_version()
-    elif _implementation == 'PyPy':
-        _implementation_version = '%s.%s.%s' % (sys.pypy_version_info.major,
-                                                sys.pypy_version_info.minor,
-                                                sys.pypy_version_info.micro)
-        if sys.pypy_version_info.releaselevel != 'final':
-            _implementation_version = ''.join([_implementation_version, sys.pypy_version_info.releaselevel])
-    elif _implementation == 'Jython':
-        _implementation_version = platform.python_version()  # Complete Guess
-    elif _implementation == 'IronPython':
-        _implementation_version = platform.python_version()  # Complete Guess
-    else:
-        _implementation_version = 'Unknown'
-
-    try:
-        p_system = platform.system()
-        p_release = platform.release()
-    except IOError:
-        p_system = 'Unknown'
-        p_release = 'Unknown'
-
-    return " ".join(['%s/%s' % (name, __version__),
-                     '%s/%s' % (_implementation, _implementation_version),
-                     '%s/%s' % (p_system, p_release)])
+    return '%s/%s' % (name, __version__)
 
 
 def default_headers():