Delete swarm_client.

swarm_client/third_party/requests/adapters.py

-# -*- coding: utf-8 -*-
-
-"""
-requests.adapters
-~~~~~~~~~~~~~~~~~
-
-This module contains the transport adapters that Requests uses to define
-and maintain connections.
-"""
-
-import socket
-
-from .models import Response
-from .packages.urllib3.poolmanager import PoolManager, proxy_from_url
-from .packages.urllib3.response import HTTPResponse
-from .packages.urllib3.util import Timeout as TimeoutSauce
-from .compat import urlparse, basestring, urldefrag, unquote
-from .utils import (DEFAULT_CA_BUNDLE_PATH, get_encoding_from_headers,
-                    except_on_missing_scheme, get_auth_from_url)
-from .structures import CaseInsensitiveDict
-from .packages.urllib3.exceptions import MaxRetryError
-from .packages.urllib3.exceptions import TimeoutError
-from .packages.urllib3.exceptions import SSLError as _SSLError
-from .packages.urllib3.exceptions import HTTPError as _HTTPError
-from .cookies import extract_cookies_to_jar
-from .exceptions import ConnectionError, Timeout, SSLError
-from .auth import _basic_auth_str
-
-DEFAULT_POOLBLOCK = False
-DEFAULT_POOLSIZE = 10
-DEFAULT_RETRIES = 0
-
-
-class BaseAdapter(object):
-    """The Base Transport Adapter"""
-
-    def __init__(self):
-        super(BaseAdapter, self).__init__()
-
-    def send(self):
-        raise NotImplementedError
-
-    def close(self):
-        raise NotImplementedError
-
-
-class HTTPAdapter(BaseAdapter):
-    """The built-in HTTP Adapter for urllib3.
-
-    Provides a general-case interface for Requests sessions to contact HTTP and
-    HTTPS urls by implementing the Transport Adapter interface. This class will
-    usually be created by the :class:`Session <Session>` class under the
-    covers.
-
-    :param pool_connections: The number of urllib3 connection pools to cache.
-    :param pool_maxsize: The maximum number of connections to save in the pool.
-    :param max_retries: The maximum number of retries each connection should attempt.
-    :param pool_block: Whether the connection pool should block for connections.
-
-    Usage::
-
-      >>> import requests
-      >>> s = requests.Session()
-      >>> a = requests.adapters.HTTPAdapter()
-      >>> s.mount('http://', a)
-    """
-    __attrs__ = ['max_retries', 'config', '_pool_connections', '_pool_maxsize',
-                 '_pool_block']
-
-    def __init__(self, pool_connections=DEFAULT_POOLSIZE,
-                 pool_maxsize=DEFAULT_POOLSIZE, max_retries=DEFAULT_RETRIES,
-                 pool_block=DEFAULT_POOLBLOCK):
-        self.max_retries = max_retries
-        self.config = {}
-        self.proxy_manager = {}
-
-        super(HTTPAdapter, self).__init__()
-
-        self._pool_connections = pool_connections
-        self._pool_maxsize = pool_maxsize
-        self._pool_block = pool_block
-
-        self.init_poolmanager(pool_connections, pool_maxsize, block=pool_block)
-
-    def __getstate__(self):
-        return dict((attr, getattr(self, attr, None)) for attr in
-                    self.__attrs__)
-
-    def __setstate__(self, state):
-        for attr, value in state.items():
-            setattr(self, attr, value)
-
-        self.init_poolmanager(self._pool_connections, self._pool_maxsize,
-                              block=self._pool_block)
-
-    def init_poolmanager(self, connections, maxsize, block=DEFAULT_POOLBLOCK):
-        """Initializes a urllib3 PoolManager. This method should not be called
-        from user code, and is only exposed for use when subclassing the
-        :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`.
-
-        :param connections: The number of urllib3 connection pools to cache.
-        :param maxsize: The maximum number of connections to save in the pool.
-        :param block: Block when no free connections are available.
-        """
-        # save these values for pickling
-        self._pool_connections = connections
-        self._pool_maxsize = maxsize
-        self._pool_block = block
-
-        self.poolmanager = PoolManager(num_pools=connections, maxsize=maxsize,
-                                       block=block)
-
-    def cert_verify(self, conn, url, verify, cert):
-        """Verify a SSL certificate. This method should not be called from user
-        code, and is only exposed for use when subclassing the
-        :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`.
-
-        :param conn: The urllib3 connection object associated with the cert.
-        :param url: The requested URL.
-        :param verify: Whether we should actually verify the certificate.
-        :param cert: The SSL certificate to verify.
-        """
-        if url.lower().startswith('https') and verify:
-
-            cert_loc = None
-
-            # Allow self-specified cert location.
-            if verify is not True:
-                cert_loc = verify
-
-            if not cert_loc:
-                cert_loc = DEFAULT_CA_BUNDLE_PATH
-
-            if not cert_loc:
-                raise Exception("Could not find a suitable SSL CA certificate bundle.")
-
-            conn.cert_reqs = 'CERT_REQUIRED'
-            conn.ca_certs = cert_loc
-        else:
-            conn.cert_reqs = 'CERT_NONE'
-            conn.ca_certs = None
-
-        if cert:
-            if not isinstance(cert, basestring):
-                conn.cert_file = cert[0]
-                conn.key_file = cert[1]
-            else:
-                conn.cert_file = cert
-
-    def build_response(self, req, resp):
-        """Builds a :class:`Response <requests.Response>` object from a urllib3
-        response. This should not be called from user code, and is only exposed
-        for use when subclassing the
-        :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`
-
-        :param req: The :class:`PreparedRequest <PreparedRequest>` used to generate the response.
-        :param resp: The urllib3 response object.
-        """
-        response = Response()
-
-        # Fallback to None if there's no status_code, for whatever reason.
-        response.status_code = getattr(resp, 'status', None)
-
-        # Make headers case-insensitive.
-        response.headers = CaseInsensitiveDict(getattr(resp, 'headers', {}))
-
-        # Set encoding.
-        response.encoding = get_encoding_from_headers(response.headers)
-        response.raw = resp
-        response.reason = response.raw.reason
-
-        if isinstance(req.url, bytes):
-            response.url = req.url.decode('utf-8')
-        else:
-            response.url = req.url
-
-        # Add new cookies from the server.
-        extract_cookies_to_jar(response.cookies, req, resp)
-
-        # Give the Response some context.
-        response.request = req
-        response.connection = self
-
-        return response
-
-    def get_connection(self, url, proxies=None):
-        """Returns a urllib3 connection for the given URL. This should not be
-        called from user code, and is only exposed for use when subclassing the
-        :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`.
-
-        :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)
-
-        if proxy:
-            except_on_missing_scheme(proxy)
-            proxy_headers = self.proxy_headers(proxy)
-
-            if not proxy in self.proxy_manager:
-                self.proxy_manager[proxy] = proxy_from_url(
-                                                proxy,
-                                                proxy_headers=proxy_headers)
-
-            conn = self.proxy_manager[proxy].connection_from_url(url)
-        else:
-            conn = self.poolmanager.connection_from_url(url.lower())
-
-        return conn
-
-    def close(self):
-        """Disposes of any internal state.
-
-        Currently, this just closes the PoolManager, which closes pooled
-        connections.
-        """
-        self.poolmanager.clear()
-
-    def request_url(self, request, proxies):
-        """Obtain the url to use when making the final request.
-
-        If the message is being sent through a proxy, the full URL has to be
-        used. Otherwise, we should only use the path portion of the URL.
-
-        This should not be called from user code, and is only exposed for use
-        when subclassing the
-        :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`.
-
-        :param request: The :class:`PreparedRequest <PreparedRequest>` being sent.
-        :param proxies: A dictionary of schemes to proxy URLs.
-        """
-        proxies = proxies or {}
-        proxy = proxies.get(urlparse(request.url).scheme)
-
-        if proxy:
-            url, _ = urldefrag(request.url)
-        else:
-            url = request.path_url
-
-        return url
-
-    def add_headers(self, request, **kwargs):
-        """Add any headers needed by the connection. As of v2.0 this does
-        nothing by default, but is left for overriding by users that subclass
-        the :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`.
-
-        This should not be called from user code, and is only exposed for use
-        when subclassing the
-        :class:`HTTPAdapter <requests.adapters.HTTPAdapter>`.
-
-        :param request: The :class:`PreparedRequest <PreparedRequest>` to add headers to.
-        :param kwargs: The keyword arguments from the call to send().
-        """
-        pass
-
-    def proxy_headers(self, proxy):
-        """Returns a dictionary of the headers to add to any request sent
-        through a proxy. This works with urllib3 magic to ensure that they are
-        correctly sent to the proxy, rather than in a tunnelled request if
-        CONNECT is being used.
-
-        This should not be called from user code, and is only exposed for use
-        when subclassing the
-        :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)
-
-        if username and password:
-            # Proxy auth usernames and passwords will be urlencoded, we need
-            # to decode them.
-            username = unquote(username)
-            password = unquote(password)
-            headers['Proxy-Authorization'] = _basic_auth_str(username,
-                                                             password)
-
-        return headers
-
-    def send(self, request, stream=False, timeout=None, verify=True, cert=None, proxies=None):
-        """Sends PreparedRequest object. Returns Response object.
-
-        :param request: The :class:`PreparedRequest <PreparedRequest>` being sent.
-        :param stream: (optional) Whether to stream the request content.
-        :param timeout: (optional) The timeout on the request.
-        :param verify: (optional) Whether to verify SSL certificates.
-        :param vert: (optional) Any user-provided SSL certificate to be trusted.
-        :param proxies: (optional) The proxies dictionary to apply to the request.
-        """
-
-        conn = self.get_connection(request.url, proxies)
-
-        self.cert_verify(conn, request.url, verify, cert)
-        url = self.request_url(request, proxies)
-        self.add_headers(request)
-
-        chunked = not (request.body is None or 'Content-Length' in request.headers)
-
-        if stream:
-            timeout = TimeoutSauce(connect=timeout)
-        else:
-            timeout = TimeoutSauce(connect=timeout, read=timeout)
-
-        try:
-            if not chunked:
-                resp = conn.urlopen(
-                    method=request.method,
-                    url=url,
-                    body=request.body,
-                    headers=request.headers,
-                    redirect=False,
-                    assert_same_host=False,
-                    preload_content=False,
-                    decode_content=False,
-                    retries=self.max_retries,
-                    timeout=timeout
-                )
-
-            # Send the request.
-            else:
-                if hasattr(conn, 'proxy_pool'):
-                    conn = conn.proxy_pool
-
-                low_conn = conn._get_conn(timeout=timeout)
-                low_conn.putrequest(request.method, url, skip_accept_encoding=True)
-
-                for header, value in request.headers.items():
-                    low_conn.putheader(header, value)
-
-                low_conn.endheaders()
-
-                for i in request.body:
-                    low_conn.send(hex(len(i))[2:].encode('utf-8'))
-                    low_conn.send(b'\r\n')
-                    low_conn.send(i)
-                    low_conn.send(b'\r\n')
-                low_conn.send(b'0\r\n\r\n')
-
-                r = low_conn.getresponse()
-                resp = HTTPResponse.from_httplib(r,
-                    pool=conn,
-                    connection=low_conn,
-                    preload_content=False,
-                    decode_content=False
-                )
-
-        except socket.error as sockerr:
-            raise ConnectionError(sockerr)
-
-        except MaxRetryError as e:
-            raise ConnectionError(e)
-
-        except (_SSLError, _HTTPError) as e:
-            if isinstance(e, _SSLError):
-                raise SSLError(e)
-            elif isinstance(e, TimeoutError):
-                raise Timeout(e)
-            else:
-                raise
-
-        r = self.build_response(request, resp)
-
-        if not stream:
-            r.content
-
-        return r