--- a/env/lib/python3.7/site-packages/boto/connection.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1227 +0,0 @@
-# Copyright (c) 2006-2012 Mitch Garnaat http://garnaat.org/
-# Copyright (c) 2012 Amazon.com, Inc. or its affiliates.
-# Copyright (c) 2010 Google
-# Copyright (c) 2008 rPath, Inc.
-# Copyright (c) 2009 The Echo Nest Corporation
-# Copyright (c) 2010, Eucalyptus Systems, Inc.
-# Copyright (c) 2011, Nexenta Systems Inc.
-# All rights reserved.
-#
-# 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, dis-
-# tribute, sublicense, and/or sell copies of the Software, and to permit
-# persons to whom the Software is furnished to do so, subject to the fol-
-# lowing 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 MERCHANTABIL-
-# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
-# SHALL THE AUTHOR 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.
-
-#
-# Parts of this code were copied or derived from sample code supplied by AWS.
-# The following notice applies to that code.
-#
-#  This software code is made available "AS IS" without warranties of any
-#  kind.  You may copy, display, modify and redistribute the software
-#  code either by itself or as incorporated into your code; provided that
-#  you do not remove any proprietary notices.  Your use of this software
-#  code is at your own risk and you waive any claim against Amazon
-#  Digital Services, Inc. or its affiliates with respect to your use of
-#  this software code. (c) 2006 Amazon Digital Services, Inc. or its
-#  affiliates.
-
-"""
-Handles basic connections to AWS
-"""
-from datetime import datetime
-import errno
-import os
-import random
-import re
-import socket
-import sys
-import time
-import xml.sax
-import copy
-
-from boto import auth
-from boto import auth_handler
-import boto
-import boto.utils
-import boto.handler
-import boto.cacerts
-
-from boto import config, UserAgent
-from boto.compat import six, http_client, urlparse, quote, encodebytes
-from boto.exception import AWSConnectionError
-from boto.exception import BotoClientError
-from boto.exception import BotoServerError
-from boto.exception import PleaseRetryException
-from boto.provider import Provider
-from boto.resultset import ResultSet
-
-HAVE_HTTPS_CONNECTION = False
-try:
-    import ssl
-    from boto import https_connection
-    # Google App Engine runs on Python 2.5 so doesn't have ssl.SSLError.
-    if hasattr(ssl, 'SSLError'):
-        HAVE_HTTPS_CONNECTION = True
-except ImportError:
-    pass
-
-try:
-    import threading
-except ImportError:
-    import dummy_threading as threading
-
-ON_APP_ENGINE = all(key in os.environ for key in (
-    'USER_IS_ADMIN', 'CURRENT_VERSION_ID', 'APPLICATION_ID'))
-
-PORTS_BY_SECURITY = {True: 443,
-                     False: 80}
-
-DEFAULT_CA_CERTS_FILE = os.path.join(os.path.dirname(os.path.abspath(boto.cacerts.__file__)), "cacerts.txt")
-
-
-class HostConnectionPool(object):
-
-    """
-    A pool of connections for one remote (host,port,is_secure).
-
-    When connections are added to the pool, they are put into a
-    pending queue.  The _mexe method returns connections to the pool
-    before the response body has been read, so they connections aren't
-    ready to send another request yet.  They stay in the pending queue
-    until they are ready for another request, at which point they are
-    returned to the pool of ready connections.
-
-    The pool of ready connections is an ordered list of
-    (connection,time) pairs, where the time is the time the connection
-    was returned from _mexe.  After a certain period of time,
-    connections are considered stale, and discarded rather than being
-    reused.  This saves having to wait for the connection to time out
-    if AWS has decided to close it on the other end because of
-    inactivity.
-
-    Thread Safety:
-
-        This class is used only from ConnectionPool while it's mutex
-        is held.
-    """
-
-    def __init__(self):
-        self.queue = []
-
-    def size(self):
-        """
-        Returns the number of connections in the pool for this host.
-        Some of the connections may still be in use, and may not be
-        ready to be returned by get().
-        """
-        return len(self.queue)
-
-    def put(self, conn):
-        """
-        Adds a connection to the pool, along with the time it was
-        added.
-        """
-        self.queue.append((conn, time.time()))
-
-    def get(self):
-        """
-        Returns the next connection in this pool that is ready to be
-        reused.  Returns None if there aren't any.
-        """
-        # Discard ready connections that are too old.
-        self.clean()
-
-        # Return the first connection that is ready, and remove it
-        # from the queue.  Connections that aren't ready are returned
-        # to the end of the queue with an updated time, on the
-        # assumption that somebody is actively reading the response.
-        for _ in range(len(self.queue)):
-            (conn, _) = self.queue.pop(0)
-            if self._conn_ready(conn):
-                return conn
-            else:
-                self.put(conn)
-        return None
-
-    def _conn_ready(self, conn):
-        """
-        There is a nice state diagram at the top of http_client.py.  It
-        indicates that once the response headers have been read (which
-        _mexe does before adding the connection to the pool), a
-        response is attached to the connection, and it stays there
-        until it's done reading.  This isn't entirely true: even after
-        the client is done reading, the response may be closed, but
-        not removed from the connection yet.
-
-        This is ugly, reading a private instance variable, but the
-        state we care about isn't available in any public methods.
-        """
-        if ON_APP_ENGINE:
-            # Google AppEngine implementation of HTTPConnection doesn't contain
-            # _HTTPConnection__response attribute. Moreover, it's not possible
-            # to determine if given connection is ready. Reusing connections
-            # simply doesn't make sense with App Engine urlfetch service.
-            return False
-        else:
-            response = getattr(conn, '_HTTPConnection__response', None)
-            return (response is None) or response.isclosed()
-
-    def clean(self):
-        """
-        Get rid of stale connections.
-        """
-        # Note that we do not close the connection here -- somebody
-        # may still be reading from it.
-        while len(self.queue) > 0 and self._pair_stale(self.queue[0]):
-            self.queue.pop(0)
-
-    def _pair_stale(self, pair):
-        """
-        Returns true of the (connection,time) pair is too old to be
-        used.
-        """
-        (_conn, return_time) = pair
-        now = time.time()
-        return return_time + ConnectionPool.STALE_DURATION < now
-
-
-class ConnectionPool(object):
-
-    """
-    A connection pool that expires connections after a fixed period of
-    time.  This saves time spent waiting for a connection that AWS has
-    timed out on the other end.
-
-    This class is thread-safe.
-    """
-
-    #
-    # The amout of time between calls to clean.
-    #
-
-    CLEAN_INTERVAL = 5.0
-
-    #
-    # How long before a connection becomes "stale" and won't be reused
-    # again.  The intention is that this time is less that the timeout
-    # period that AWS uses, so we'll never try to reuse a connection
-    # and find that AWS is timing it out.
-    #
-    # Experimentation in July 2011 shows that AWS starts timing things
-    # out after three minutes.  The 60 seconds here is conservative so
-    # we should never hit that 3-minute timout.
-    #
-
-    STALE_DURATION = 60.0
-
-    def __init__(self):
-        # Mapping from (host,port,is_secure) to HostConnectionPool.
-        # If a pool becomes empty, it is removed.
-        self.host_to_pool = {}
-        # The last time the pool was cleaned.
-        self.last_clean_time = 0.0
-        self.mutex = threading.Lock()
-        ConnectionPool.STALE_DURATION = \
-            config.getfloat('Boto', 'connection_stale_duration',
-                            ConnectionPool.STALE_DURATION)
-
-    def __getstate__(self):
-        pickled_dict = copy.copy(self.__dict__)
-        pickled_dict['host_to_pool'] = {}
-        del pickled_dict['mutex']
-        return pickled_dict
-
-    def __setstate__(self, dct):
-        self.__init__()
-
-    def size(self):
-        """
-        Returns the number of connections in the pool.
-        """
-        return sum(pool.size() for pool in self.host_to_pool.values())
-
-    def get_http_connection(self, host, port, is_secure):
-        """
-        Gets a connection from the pool for the named host.  Returns
-        None if there is no connection that can be reused. It's the caller's
-        responsibility to call close() on the connection when it's no longer
-        needed.
-        """
-        self.clean()
-        with self.mutex:
-            key = (host, port, is_secure)
-            if key not in self.host_to_pool:
-                return None
-            return self.host_to_pool[key].get()
-
-    def put_http_connection(self, host, port, is_secure, conn):
-        """
-        Adds a connection to the pool of connections that can be
-        reused for the named host.
-        """
-        with self.mutex:
-            key = (host, port, is_secure)
-            if key not in self.host_to_pool:
-                self.host_to_pool[key] = HostConnectionPool()
-            self.host_to_pool[key].put(conn)
-
-    def clean(self):
-        """
-        Clean up the stale connections in all of the pools, and then
-        get rid of empty pools.  Pools clean themselves every time a
-        connection is fetched; this cleaning takes care of pools that
-        aren't being used any more, so nothing is being gotten from
-        them.
-        """
-        with self.mutex:
-            now = time.time()
-            if self.last_clean_time + self.CLEAN_INTERVAL < now:
-                to_remove = []
-                for (host, pool) in self.host_to_pool.items():
-                    pool.clean()
-                    if pool.size() == 0:
-                        to_remove.append(host)
-                for host in to_remove:
-                    del self.host_to_pool[host]
-                self.last_clean_time = now
-
-
-class HTTPRequest(object):
-
-    def __init__(self, method, protocol, host, port, path, auth_path,
-                 params, headers, body):
-        """Represents an HTTP request.
-
-        :type method: string
-        :param method: The HTTP method name, 'GET', 'POST', 'PUT' etc.
-
-        :type protocol: string
-        :param protocol: The http protocol used, 'http' or 'https'.
-
-        :type host: string
-        :param host: Host to which the request is addressed. eg. abc.com
-
-        :type port: int
-        :param port: port on which the request is being sent. Zero means unset,
-            in which case default port will be chosen.
-
-        :type path: string
-        :param path: URL path that is being accessed.
-
-        :type auth_path: string
-        :param path: The part of the URL path used when creating the
-            authentication string.
-
-        :type params: dict
-        :param params: HTTP url query parameters, with key as name of
-            the param, and value as value of param.
-
-        :type headers: dict
-        :param headers: HTTP headers, with key as name of the header and value
-            as value of header.
-
-        :type body: string
-        :param body: Body of the HTTP request. If not present, will be None or
-            empty string ('').
-        """
-        self.method = method
-        self.protocol = protocol
-        self.host = host
-        self.port = port
-        self.path = path
-        if auth_path is None:
-            auth_path = path
-        self.auth_path = auth_path
-        self.params = params
-        # chunked Transfer-Encoding should act only on PUT request.
-        if headers and 'Transfer-Encoding' in headers and \
-                headers['Transfer-Encoding'] == 'chunked' and \
-                self.method != 'PUT':
-            self.headers = headers.copy()
-            del self.headers['Transfer-Encoding']
-        else:
-            self.headers = headers
-        self.body = body
-
-    def __str__(self):
-        return (('method:(%s) protocol:(%s) host(%s) port(%s) path(%s) '
-                 'params(%s) headers(%s) body(%s)') % (self.method,
-                 self.protocol, self.host, self.port, self.path, self.params,
-                 self.headers, self.body))
-
-    def authorize(self, connection, **kwargs):
-        if not getattr(self, '_headers_quoted', False):
-            for key in self.headers:
-                val = self.headers[key]
-                if isinstance(val, six.text_type):
-                    safe = '!"#$%&\'()*+,/:;<=>?@[\\]^`{|}~ '
-                    self.headers[key] = quote(val.encode('utf-8'), safe)
-            setattr(self, '_headers_quoted', True)
-
-        self.headers['User-Agent'] = UserAgent
-
-        connection._auth_handler.add_auth(self, **kwargs)
-
-        # I'm not sure if this is still needed, now that add_auth is
-        # setting the content-length for POST requests.
-        if 'Content-Length' not in self.headers:
-            if 'Transfer-Encoding' not in self.headers or \
-                    self.headers['Transfer-Encoding'] != 'chunked':
-                self.headers['Content-Length'] = str(len(self.body))
-
-
-class HTTPResponse(http_client.HTTPResponse):
-
-    def __init__(self, *args, **kwargs):
-        http_client.HTTPResponse.__init__(self, *args, **kwargs)
-        self._cached_response = ''
-
-    def read(self, amt=None):
-        """Read the response.
-
-        This method does not have the same behavior as
-        http_client.HTTPResponse.read.  Instead, if this method is called with
-        no ``amt`` arg, then the response body will be cached.  Subsequent
-        calls to ``read()`` with no args **will return the cached response**.
-
-        """
-        if amt is None:
-            # The reason for doing this is that many places in boto call
-            # response.read() and except to get the response body that they
-            # can then process.  To make sure this always works as they expect
-            # we're caching the response so that multiple calls to read()
-            # will return the full body.  Note that this behavior only
-            # happens if the amt arg is not specified.
-            if not self._cached_response:
-                self._cached_response = http_client.HTTPResponse.read(self)
-            return self._cached_response
-        else:
-            return http_client.HTTPResponse.read(self, amt)
-
-
-class AWSAuthConnection(object):
-    def __init__(self, host, aws_access_key_id=None,
-                 aws_secret_access_key=None,
-                 is_secure=True, port=None, proxy=None, proxy_port=None,
-                 proxy_user=None, proxy_pass=None, debug=0,
-                 https_connection_factory=None, path='/',
-                 provider='aws', security_token=None,
-                 suppress_consec_slashes=True,
-                 validate_certs=True, profile_name=None):
-        """
-        :type host: str
-        :param host: The host to make the connection to
-
-        :keyword str aws_access_key_id: Your AWS Access Key ID (provided by
-            Amazon). If none is specified, the value in your
-            ``AWS_ACCESS_KEY_ID`` environmental variable is used.
-        :keyword str aws_secret_access_key: Your AWS Secret Access Key
-            (provided by Amazon). If none is specified, the value in your
-            ``AWS_SECRET_ACCESS_KEY`` environmental variable is used.
-        :keyword str security_token: The security token associated with
-            temporary credentials issued by STS.  Optional unless using
-            temporary credentials.  If none is specified, the environment
-            variable ``AWS_SECURITY_TOKEN`` is used if defined.
-
-        :type is_secure: boolean
-        :param is_secure: Whether the connection is over SSL
-
-        :type https_connection_factory: list or tuple
-        :param https_connection_factory: A pair of an HTTP connection
-            factory and the exceptions to catch.  The factory should have
-            a similar interface to L{http_client.HTTPSConnection}.
-
-        :param str proxy: Address/hostname for a proxy server
-
-        :type proxy_port: int
-        :param proxy_port: The port to use when connecting over a proxy
-
-        :type proxy_user: str
-        :param proxy_user: The username to connect with on the proxy
-
-        :type proxy_pass: str
-        :param proxy_pass: The password to use when connection over a proxy.
-
-        :type port: int
-        :param port: The port to use to connect
-
-        :type suppress_consec_slashes: bool
-        :param suppress_consec_slashes: If provided, controls whether
-            consecutive slashes will be suppressed in key paths.
-
-        :type validate_certs: bool
-        :param validate_certs: Controls whether SSL certificates
-            will be validated or not.  Defaults to True.
-
-        :type profile_name: str
-        :param profile_name: Override usual Credentials section in config
-            file to use a named set of keys instead.
-        """
-        self.suppress_consec_slashes = suppress_consec_slashes
-        self.num_retries = 6
-        # Override passed-in is_secure setting if value was defined in config.
-        if config.has_option('Boto', 'is_secure'):
-            is_secure = config.getboolean('Boto', 'is_secure')
-        self.is_secure = is_secure
-        # Whether or not to validate server certificates.
-        # The default is now to validate certificates.  This can be
-        # overridden in the boto config file are by passing an
-        # explicit validate_certs parameter to the class constructor.
-        self.https_validate_certificates = config.getbool(
-            'Boto', 'https_validate_certificates',
-            validate_certs)
-        if self.https_validate_certificates and not HAVE_HTTPS_CONNECTION:
-            raise BotoClientError(
-                "SSL server certificate validation is enabled in boto "
-                "configuration, but Python dependencies required to "
-                "support this feature are not available. Certificate "
-                "validation is only supported when running under Python "
-                "2.6 or later.")
-        certs_file = config.get_value(
-            'Boto', 'ca_certificates_file', DEFAULT_CA_CERTS_FILE)
-        if certs_file == 'system':
-            certs_file = None
-        self.ca_certificates_file = certs_file
-        if port:
-            self.port = port
-        else:
-            self.port = PORTS_BY_SECURITY[is_secure]
-
-        self.handle_proxy(proxy, proxy_port, proxy_user, proxy_pass)
-        # define exceptions from http_client that we want to catch and retry
-        self.http_exceptions = (http_client.HTTPException, socket.error,
-                                socket.gaierror, http_client.BadStatusLine)
-        # define subclasses of the above that are not retryable.
-        self.http_unretryable_exceptions = []
-        if HAVE_HTTPS_CONNECTION:
-            self.http_unretryable_exceptions.append(
-                https_connection.InvalidCertificateException)
-
-        # define values in socket exceptions we don't want to catch
-        self.socket_exception_values = (errno.EINTR,)
-        if https_connection_factory is not None:
-            self.https_connection_factory = https_connection_factory[0]
-            self.http_exceptions += https_connection_factory[1]
-        else:
-            self.https_connection_factory = None
-        if (is_secure):
-            self.protocol = 'https'
-        else:
-            self.protocol = 'http'
-        self.host = host
-        self.path = path
-        # if the value passed in for debug
-        if not isinstance(debug, six.integer_types):
-            debug = 0
-        self.debug = config.getint('Boto', 'debug', debug)
-        self.host_header = None
-
-        # Timeout used to tell http_client how long to wait for socket timeouts.
-        # Default is to leave timeout unchanged, which will in turn result in
-        # the socket's default global timeout being used. To specify a
-        # timeout, set http_socket_timeout in Boto config. Regardless,
-        # timeouts will only be applied if Python is 2.6 or greater.
-        self.http_connection_kwargs = {}
-        if (sys.version_info[0], sys.version_info[1]) >= (2, 6):
-            # If timeout isn't defined in boto config file, use 70 second
-            # default as recommended by
-            # http://docs.aws.amazon.com/amazonswf/latest/apireference/API_PollForActivityTask.html
-            self.http_connection_kwargs['timeout'] = config.getint(
-                'Boto', 'http_socket_timeout', 70)
-
-        if isinstance(provider, Provider):
-            # Allow overriding Provider
-            self.provider = provider
-        else:
-            self._provider_type = provider
-            self.provider = Provider(self._provider_type,
-                                     aws_access_key_id,
-                                     aws_secret_access_key,
-                                     security_token,
-                                     profile_name)
-
-        # Allow config file to override default host, port, and host header.
-        if self.provider.host:
-            self.host = self.provider.host
-        if self.provider.port:
-            self.port = self.provider.port
-        if self.provider.host_header:
-            self.host_header = self.provider.host_header
-
-        self._pool = ConnectionPool()
-        self._connection = (self.host, self.port, self.is_secure)
-        self._last_rs = None
-        self._auth_handler = auth.get_auth_handler(
-            host, config, self.provider, self._required_auth_capability())
-        if getattr(self, 'AuthServiceName', None) is not None:
-            self.auth_service_name = self.AuthServiceName
-        self.request_hook = None
-
-    def __repr__(self):
-        return '%s:%s' % (self.__class__.__name__, self.host)
-
-    def _required_auth_capability(self):
-        return []
-
-    def _get_auth_service_name(self):
-        return getattr(self._auth_handler, 'service_name')
-
-    # For Sigv4, the auth_service_name/auth_region_name properties allow
-    # the service_name/region_name to be explicitly set instead of being
-    # derived from the endpoint url.
-    def _set_auth_service_name(self, value):
-        self._auth_handler.service_name = value
-    auth_service_name = property(_get_auth_service_name, _set_auth_service_name)
-
-    def _get_auth_region_name(self):
-        return getattr(self._auth_handler, 'region_name')
-
-    def _set_auth_region_name(self, value):
-        self._auth_handler.region_name = value
-    auth_region_name = property(_get_auth_region_name, _set_auth_region_name)
-
-    def connection(self):
-        return self.get_http_connection(*self._connection)
-    connection = property(connection)
-
-    def aws_access_key_id(self):
-        return self.provider.access_key
-    aws_access_key_id = property(aws_access_key_id)
-    gs_access_key_id = aws_access_key_id
-    access_key = aws_access_key_id
-
-    def aws_secret_access_key(self):
-        return self.provider.secret_key
-    aws_secret_access_key = property(aws_secret_access_key)
-    gs_secret_access_key = aws_secret_access_key
-    secret_key = aws_secret_access_key
-
-    def profile_name(self):
-        return self.provider.profile_name
-    profile_name = property(profile_name)
-
-    def get_path(self, path='/'):
-        # The default behavior is to suppress consecutive slashes for reasons
-        # discussed at
-        # https://groups.google.com/forum/#!topic/boto-dev/-ft0XPUy0y8
-        # You can override that behavior with the suppress_consec_slashes param.
-        if not self.suppress_consec_slashes:
-            return self.path + re.sub('^(/*)/', "\\1", path)
-        pos = path.find('?')
-        if pos >= 0:
-            params = path[pos:]
-            path = path[:pos]
-        else:
-            params = None
-        if path[-1] == '/':
-            need_trailing = True
-        else:
-            need_trailing = False
-        path_elements = self.path.split('/')
-        path_elements.extend(path.split('/'))
-        path_elements = [p for p in path_elements if p]
-        path = '/' + '/'.join(path_elements)
-        if path[-1] != '/' and need_trailing:
-            path += '/'
-        if params:
-            path = path + params
-        return path
-
-    def server_name(self, port=None):
-        if not port:
-            port = self.port
-        if port == 80:
-            signature_host = self.host
-        else:
-            # This unfortunate little hack can be attributed to
-            # a difference in the 2.6 version of http_client.  In old
-            # versions, it would append ":443" to the hostname sent
-            # in the Host header and so we needed to make sure we
-            # did the same when calculating the V2 signature.  In 2.6
-            # (and higher!)
-            # it no longer does that.  Hence, this kludge.
-            if ((ON_APP_ENGINE and sys.version[:3] == '2.5') or
-                    sys.version[:3] in ('2.6', '2.7')) and port == 443:
-                signature_host = self.host
-            else:
-                signature_host = '%s:%d' % (self.host, port)
-        return signature_host
-
-    def handle_proxy(self, proxy, proxy_port, proxy_user, proxy_pass):
-        self.proxy = proxy
-        self.proxy_port = proxy_port
-        self.proxy_user = proxy_user
-        self.proxy_pass = proxy_pass
-        if 'http_proxy' in os.environ and not self.proxy:
-            pattern = re.compile(
-                '(?:http://)?'
-                '(?:(?P<user>[\w\-\.]+):(?P<pass>.*)@)?'
-                '(?P<host>[\w\-\.]+)'
-                '(?::(?P<port>\d+))?'
-            )
-            match = pattern.match(os.environ['http_proxy'])
-            if match:
-                self.proxy = match.group('host')
-                self.proxy_port = match.group('port')
-                self.proxy_user = match.group('user')
-                self.proxy_pass = match.group('pass')
-        else:
-            if not self.proxy:
-                self.proxy = config.get_value('Boto', 'proxy', None)
-            if not self.proxy_port:
-                self.proxy_port = config.get_value('Boto', 'proxy_port', None)
-            if not self.proxy_user:
-                self.proxy_user = config.get_value('Boto', 'proxy_user', None)
-            if not self.proxy_pass:
-                self.proxy_pass = config.get_value('Boto', 'proxy_pass', None)
-
-        if not self.proxy_port and self.proxy:
-            print("http_proxy environment variable does not specify "
-                  "a port, using default")
-            self.proxy_port = self.port
-
-        self.no_proxy = os.environ.get('no_proxy', '') or os.environ.get('NO_PROXY', '')
-        self.use_proxy = (self.proxy is not None)
-
-    def get_http_connection(self, host, port, is_secure):
-        conn = self._pool.get_http_connection(host, port, is_secure)
-        if conn is not None:
-            return conn
-        else:
-            return self.new_http_connection(host, port, is_secure)
-
-    def skip_proxy(self, host):
-        if not self.no_proxy:
-            return False
-
-        if self.no_proxy == "*":
-            return True
-
-        hostonly = host
-        hostonly = host.split(':')[0]
-
-        for name in self.no_proxy.split(','):
-            if name and (hostonly.endswith(name) or host.endswith(name)):
-                return True
-
-        return False
-
-    def new_http_connection(self, host, port, is_secure):
-        if host is None:
-            host = self.server_name()
-
-        # Make sure the host is really just the host, not including
-        # the port number
-        host = boto.utils.parse_host(host)
-
-        http_connection_kwargs = self.http_connection_kwargs.copy()
-
-        # Connection factories below expect a port keyword argument
-        http_connection_kwargs['port'] = port
-
-        # Override host with proxy settings if needed
-        if self.use_proxy and not is_secure and \
-                not self.skip_proxy(host):
-            host = self.proxy
-            http_connection_kwargs['port'] = int(self.proxy_port)
-
-        if is_secure:
-            boto.log.debug(
-                'establishing HTTPS connection: host=%s, kwargs=%s',
-                host, http_connection_kwargs)
-            if self.use_proxy and not self.skip_proxy(host):
-                connection = self.proxy_ssl(host, is_secure and 443 or 80)
-            elif self.https_connection_factory:
-                connection = self.https_connection_factory(host)
-            elif self.https_validate_certificates and HAVE_HTTPS_CONNECTION:
-                connection = https_connection.CertValidatingHTTPSConnection(
-                    host, ca_certs=self.ca_certificates_file,
-                    **http_connection_kwargs)
-            else:
-                connection = http_client.HTTPSConnection(
-                    host, **http_connection_kwargs)
-        else:
-            boto.log.debug('establishing HTTP connection: kwargs=%s' %
-                           http_connection_kwargs)
-            if self.https_connection_factory:
-                # even though the factory says https, this is too handy
-                # to not be able to allow overriding for http also.
-                connection = self.https_connection_factory(
-                    host, **http_connection_kwargs)
-            else:
-                connection = http_client.HTTPConnection(
-                    host, **http_connection_kwargs)
-        if self.debug > 1:
-            connection.set_debuglevel(self.debug)
-        # self.connection must be maintained for backwards-compatibility
-        # however, it must be dynamically pulled from the connection pool
-        # set a private variable which will enable that
-        if host.split(':')[0] == self.host and is_secure == self.is_secure:
-            self._connection = (host, port, is_secure)
-        # Set the response class of the http connection to use our custom
-        # class.
-        connection.response_class = HTTPResponse
-        return connection
-
-    def put_http_connection(self, host, port, is_secure, connection):
-        self._pool.put_http_connection(host, port, is_secure, connection)
-
-    def proxy_ssl(self, host=None, port=None):
-        if host and port:
-            host = '%s:%d' % (host, port)
-        else:
-            host = '%s:%d' % (self.host, self.port)
-        # Seems properly to use timeout for connect too
-        timeout = self.http_connection_kwargs.get("timeout")
-        if timeout is not None:
-            sock = socket.create_connection((self.proxy,
-                                             int(self.proxy_port)), timeout)
-        else:
-            sock = socket.create_connection((self.proxy, int(self.proxy_port)))
-        boto.log.debug("Proxy connection: CONNECT %s HTTP/1.0\r\n", host)
-        sock.sendall("CONNECT %s HTTP/1.0\r\n" % host)
-        sock.sendall("User-Agent: %s\r\n" % UserAgent)
-        if self.proxy_user and self.proxy_pass:
-            for k, v in self.get_proxy_auth_header().items():
-                sock.sendall("%s: %s\r\n" % (k, v))
-            # See discussion about this config option at
-            # https://groups.google.com/forum/?fromgroups#!topic/boto-dev/teenFvOq2Cc
-            if config.getbool('Boto', 'send_crlf_after_proxy_auth_headers', False):
-                sock.sendall("\r\n")
-        else:
-            sock.sendall("\r\n")
-        resp = http_client.HTTPResponse(sock, strict=True, debuglevel=self.debug)
-        resp.begin()
-
-        if resp.status != 200:
-            # Fake a socket error, use a code that make it obvious it hasn't
-            # been generated by the socket library
-            raise socket.error(-71,
-                               "Error talking to HTTP proxy %s:%s: %s (%s)" %
-                               (self.proxy, self.proxy_port,
-                                resp.status, resp.reason))
-
-        # We can safely close the response, it duped the original socket
-        resp.close()
-
-        h = http_client.HTTPConnection(host)
-
-        if self.https_validate_certificates and HAVE_HTTPS_CONNECTION:
-            msg = "wrapping ssl socket for proxied connection; "
-            if self.ca_certificates_file:
-                msg += "CA certificate file=%s" % self.ca_certificates_file
-            else:
-                msg += "using system provided SSL certs"
-            boto.log.debug(msg)
-            key_file = self.http_connection_kwargs.get('key_file', None)
-            cert_file = self.http_connection_kwargs.get('cert_file', None)
-            sslSock = ssl.wrap_socket(sock, keyfile=key_file,
-                                      certfile=cert_file,
-                                      cert_reqs=ssl.CERT_REQUIRED,
-                                      ca_certs=self.ca_certificates_file)
-            cert = sslSock.getpeercert()
-            hostname = self.host.split(':', 0)[0]
-            if not https_connection.ValidateCertificateHostname(cert, hostname):
-                raise https_connection.InvalidCertificateException(
-                    hostname, cert, 'hostname mismatch')
-        else:
-            # Fallback for old Python without ssl.wrap_socket
-            if hasattr(http_client, 'ssl'):
-                sslSock = http_client.ssl.SSLSocket(sock)
-            else:
-                sslSock = socket.ssl(sock, None, None)
-                sslSock = http_client.FakeSocket(sock, sslSock)
-
-        # This is a bit unclean
-        h.sock = sslSock
-        return h
-
-    def prefix_proxy_to_path(self, path, host=None):
-        path = self.protocol + '://' + (host or self.server_name()) + path
-        return path
-
-    def get_proxy_auth_header(self):
-        auth = encodebytes(self.proxy_user + ':' + self.proxy_pass)
-        return {'Proxy-Authorization': 'Basic %s' % auth}
-
-    # For passing proxy information to other connection libraries, e.g. cloudsearch2
-    def get_proxy_url_with_auth(self):
-        if not self.use_proxy:
-            return None
-
-        if self.proxy_user or self.proxy_pass:
-            if self.proxy_pass:
-                login_info = '%s:%s@' % (self.proxy_user, self.proxy_pass)
-            else:
-                login_info = '%s@' % self.proxy_user
-        else:
-            login_info = ''
-
-        return 'http://%s%s:%s' % (login_info, self.proxy, str(self.proxy_port or self.port))
-
-    def set_host_header(self, request):
-        try:
-            request.headers['Host'] = \
-                self._auth_handler.host_header(self.host, request)
-        except AttributeError:
-            request.headers['Host'] = self.host.split(':', 1)[0]
-
-    def set_request_hook(self, hook):
-        self.request_hook = hook
-
-    def _mexe(self, request, sender=None, override_num_retries=None,
-              retry_handler=None):
-        """
-        mexe - Multi-execute inside a loop, retrying multiple times to handle
-               transient Internet errors by simply trying again.
-               Also handles redirects.
-
-        This code was inspired by the S3Utils classes posted to the boto-users
-        Google group by Larry Bates.  Thanks!
-
-        """
-        boto.log.debug('Method: %s' % request.method)
-        boto.log.debug('Path: %s' % request.path)
-        boto.log.debug('Data: %s' % request.body)
-        boto.log.debug('Headers: %s' % request.headers)
-        boto.log.debug('Host: %s' % request.host)
-        boto.log.debug('Port: %s' % request.port)
-        boto.log.debug('Params: %s' % request.params)
-        response = None
-        body = None
-        ex = None
-        if override_num_retries is None:
-            num_retries = config.getint('Boto', 'num_retries', self.num_retries)
-        else:
-            num_retries = override_num_retries
-        i = 0
-        connection = self.get_http_connection(request.host, request.port,
-                                              self.is_secure)
-
-        # Convert body to bytes if needed
-        if not isinstance(request.body, bytes) and hasattr(request.body,
-                                                           'encode'):
-            request.body = request.body.encode('utf-8')
-
-        while i <= num_retries:
-            # Use binary exponential backoff to desynchronize client requests.
-            next_sleep = min(random.random() * (2 ** i),
-                             boto.config.get('Boto', 'max_retry_delay', 60))
-            try:
-                # we now re-sign each request before it is retried
-                boto.log.debug('Token: %s' % self.provider.security_token)
-                request.authorize(connection=self)
-                # Only force header for non-s3 connections, because s3 uses
-                # an older signing method + bucket resource URLs that include
-                # the port info. All others should be now be up to date and
-                # not include the port.
-                if 's3' not in self._required_auth_capability():
-                    if not getattr(self, 'anon', False):
-                        if not request.headers.get('Host'):
-                            self.set_host_header(request)
-                boto.log.debug('Final headers: %s' % request.headers)
-                request.start_time = datetime.now()
-                if callable(sender):
-                    response = sender(connection, request.method, request.path,
-                                      request.body, request.headers)
-                else:
-                    connection.request(request.method, request.path,
-                                       request.body, request.headers)
-                    response = connection.getresponse()
-                boto.log.debug('Response headers: %s' % response.getheaders())
-                location = response.getheader('location')
-                # -- gross hack --
-                # http_client gets confused with chunked responses to HEAD requests
-                # so I have to fake it out
-                if request.method == 'HEAD' and getattr(response,
-                                                        'chunked', False):
-                    response.chunked = 0
-                if callable(retry_handler):
-                    status = retry_handler(response, i, next_sleep)
-                    if status:
-                        msg, i, next_sleep = status
-                        if msg:
-                            boto.log.debug(msg)
-                        time.sleep(next_sleep)
-                        continue
-                if response.status in [500, 502, 503, 504]:
-                    msg = 'Received %d response.  ' % response.status
-                    msg += 'Retrying in %3.1f seconds' % next_sleep
-                    boto.log.debug(msg)
-                    body = response.read()
-                    if isinstance(body, bytes):
-                        body = body.decode('utf-8')
-                elif response.status < 300 or response.status >= 400 or \
-                        not location:
-                    # don't return connection to the pool if response contains
-                    # Connection:close header, because the connection has been
-                    # closed and default reconnect behavior may do something
-                    # different than new_http_connection. Also, it's probably
-                    # less efficient to try to reuse a closed connection.
-                    conn_header_value = response.getheader('connection')
-                    if conn_header_value == 'close':
-                        connection.close()
-                    else:
-                        self.put_http_connection(request.host, request.port,
-                                                 self.is_secure, connection)
-                    if self.request_hook is not None:
-                        self.request_hook.handle_request_data(request, response)
-                    return response
-                else:
-                    scheme, request.host, request.path, \
-                        params, query, fragment = urlparse(location)
-                    if query:
-                        request.path += '?' + query
-                    # urlparse can return both host and port in netloc, so if
-                    # that's the case we need to split them up properly
-                    if ':' in request.host:
-                        request.host, request.port = request.host.split(':', 1)
-                    msg = 'Redirecting: %s' % scheme + '://'
-                    msg += request.host + request.path
-                    boto.log.debug(msg)
-                    connection = self.get_http_connection(request.host,
-                                                          request.port,
-                                                          scheme == 'https')
-                    response = None
-                    continue
-            except PleaseRetryException as e:
-                boto.log.debug('encountered a retry exception: %s' % e)
-                connection = self.new_http_connection(request.host, request.port,
-                                                      self.is_secure)
-                response = e.response
-                ex = e
-            except self.http_exceptions as e:
-                for unretryable in self.http_unretryable_exceptions:
-                    if isinstance(e, unretryable):
-                        boto.log.debug(
-                            'encountered unretryable %s exception, re-raising' %
-                            e.__class__.__name__)
-                        raise
-                boto.log.debug('encountered %s exception, reconnecting' %
-                               e.__class__.__name__)
-                connection = self.new_http_connection(request.host, request.port,
-                                                      self.is_secure)
-                ex = e
-            time.sleep(next_sleep)
-            i += 1
-        # If we made it here, it's because we have exhausted our retries
-        # and stil haven't succeeded.  So, if we have a response object,
-        # use it to raise an exception.
-        # Otherwise, raise the exception that must have already happened.
-        if self.request_hook is not None:
-            self.request_hook.handle_request_data(request, response, error=True)
-        if response:
-            raise BotoServerError(response.status, response.reason, body)
-        elif ex:
-            raise ex
-        else:
-            msg = 'Please report this exception as a Boto Issue!'
-            raise BotoClientError(msg)
-
-    def build_base_http_request(self, method, path, auth_path,
-                                params=None, headers=None, data='', host=None):
-        path = self.get_path(path)
-        if auth_path is not None:
-            auth_path = self.get_path(auth_path)
-        if params is None:
-            params = {}
-        else:
-            params = params.copy()
-        if headers is None:
-            headers = {}
-        else:
-            headers = headers.copy()
-        if self.host_header and not boto.utils.find_matching_headers('host', headers):
-            headers['host'] = self.host_header
-        host = host or self.host
-        if self.use_proxy and not self.skip_proxy(host):
-            if not auth_path:
-                auth_path = path
-            path = self.prefix_proxy_to_path(path, host)
-            if self.proxy_user and self.proxy_pass and not self.is_secure:
-                # If is_secure, we don't have to set the proxy authentication
-                # header here, we did that in the CONNECT to the proxy.
-                headers.update(self.get_proxy_auth_header())
-        return HTTPRequest(method, self.protocol, host, self.port,
-                           path, auth_path, params, headers, data)
-
-    def make_request(self, method, path, headers=None, data='', host=None,
-                     auth_path=None, sender=None, override_num_retries=None,
-                     params=None, retry_handler=None):
-        """Makes a request to the server, with stock multiple-retry logic."""
-        if params is None:
-            params = {}
-        http_request = self.build_base_http_request(method, path, auth_path,
-                                                    params, headers, data, host)
-        return self._mexe(http_request, sender, override_num_retries,
-                          retry_handler=retry_handler)
-
-    def close(self):
-        """(Optional) Close any open HTTP connections.  This is non-destructive,
-        and making a new request will open a connection again."""
-
-        boto.log.debug('closing all HTTP connections')
-        self._connection = None  # compat field
-
-
-class AWSQueryConnection(AWSAuthConnection):
-
-    APIVersion = ''
-    ResponseError = BotoServerError
-
-    def __init__(self, aws_access_key_id=None, aws_secret_access_key=None,
-                 is_secure=True, port=None, proxy=None, proxy_port=None,
-                 proxy_user=None, proxy_pass=None, host=None, debug=0,
-                 https_connection_factory=None, path='/', security_token=None,
-                 validate_certs=True, profile_name=None, provider='aws'):
-        super(AWSQueryConnection, self).__init__(
-            host, aws_access_key_id,
-            aws_secret_access_key,
-            is_secure, port, proxy,
-            proxy_port, proxy_user, proxy_pass,
-            debug, https_connection_factory, path,
-            security_token=security_token,
-            validate_certs=validate_certs,
-            profile_name=profile_name,
-            provider=provider)
-
-    def _required_auth_capability(self):
-        return []
-
-    def get_utf8_value(self, value):
-        return boto.utils.get_utf8_value(value)
-
-    def make_request(self, action, params=None, path='/', verb='GET'):
-        http_request = self.build_base_http_request(verb, path, None,
-                                                    params, {}, '',
-                                                    self.host)
-        if action:
-            http_request.params['Action'] = action
-        if self.APIVersion:
-            http_request.params['Version'] = self.APIVersion
-        return self._mexe(http_request)
-
-    def build_list_params(self, params, items, label):
-        if isinstance(items, six.string_types):
-            items = [items]
-        for i in range(1, len(items) + 1):
-            params['%s.%d' % (label, i)] = items[i - 1]
-
-    def build_complex_list_params(self, params, items, label, names):
-        """Serialize a list of structures.
-
-        For example::
-
-            items = [('foo', 'bar', 'baz'), ('foo2', 'bar2', 'baz2')]
-            label = 'ParamName.member'
-            names = ('One', 'Two', 'Three')
-            self.build_complex_list_params(params, items, label, names)
-
-        would result in the params dict being updated with these params::
-
-            ParamName.member.1.One = foo
-            ParamName.member.1.Two = bar
-            ParamName.member.1.Three = baz
-
-            ParamName.member.2.One = foo2
-            ParamName.member.2.Two = bar2
-            ParamName.member.2.Three = baz2
-
-        :type params: dict
-        :param params: The params dict.  The complex list params
-            will be added to this dict.
-
-        :type items: list of tuples
-        :param items: The list to serialize.
-
-        :type label: string
-        :param label: The prefix to apply to the parameter.
-
-        :type names: tuple of strings
-        :param names: The names associated with each tuple element.
-
-        """
-        for i, item in enumerate(items, 1):
-            current_prefix = '%s.%s' % (label, i)
-            for key, value in zip(names, item):
-                full_key = '%s.%s' % (current_prefix, key)
-                params[full_key] = value
-
-    # generics
-
-    def get_list(self, action, params, markers, path='/',
-                 parent=None, verb='GET'):
-        if not parent:
-            parent = self
-        response = self.make_request(action, params, path, verb)
-        body = response.read()
-        boto.log.debug(body)
-        if not body:
-            boto.log.error('Null body %s' % body)
-            raise self.ResponseError(response.status, response.reason, body)
-        elif response.status == 200:
-            rs = ResultSet(markers)
-            h = boto.handler.XmlHandler(rs, parent)
-            if isinstance(body, six.text_type):
-                body = body.encode('utf-8')
-            xml.sax.parseString(body, h)
-            return rs
-        else:
-            boto.log.error('%s %s' % (response.status, response.reason))
-            boto.log.error('%s' % body)
-            raise self.ResponseError(response.status, response.reason, body)
-
-    def get_object(self, action, params, cls, path='/',
-                   parent=None, verb='GET'):
-        if not parent:
-            parent = self
-        response = self.make_request(action, params, path, verb)
-        body = response.read()
-        boto.log.debug(body)
-        if not body:
-            boto.log.error('Null body %s' % body)
-            raise self.ResponseError(response.status, response.reason, body)
-        elif response.status == 200:
-            obj = cls(parent)
-            h = boto.handler.XmlHandler(obj, parent)
-            if isinstance(body, six.text_type):
-                body = body.encode('utf-8')
-            xml.sax.parseString(body, h)
-            return obj
-        else:
-            boto.log.error('%s %s' % (response.status, response.reason))
-            boto.log.error('%s' % body)
-            raise self.ResponseError(response.status, response.reason, body)
-
-    def get_status(self, action, params, path='/', parent=None, verb='GET'):
-        if not parent:
-            parent = self
-        response = self.make_request(action, params, path, verb)
-        body = response.read()
-        boto.log.debug(body)
-        if not body:
-            boto.log.error('Null body %s' % body)
-            raise self.ResponseError(response.status, response.reason, body)
-        elif response.status == 200:
-            rs = ResultSet()
-            h = boto.handler.XmlHandler(rs, parent)
-            xml.sax.parseString(body, h)
-            return rs.status
-        else:
-            boto.log.error('%s %s' % (response.status, response.reason))
-            boto.log.error('%s' % body)
-            raise self.ResponseError(response.status, response.reason, body)