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Diffstat (limited to 'lib/python2.7/site-packages/requests-2.13.0-py2.7.egg/requests/packages/urllib3/util/connection.py')
-rw-r--r--lib/python2.7/site-packages/requests-2.13.0-py2.7.egg/requests/packages/urllib3/util/connection.py130
1 files changed, 0 insertions, 130 deletions
diff --git a/lib/python2.7/site-packages/requests-2.13.0-py2.7.egg/requests/packages/urllib3/util/connection.py b/lib/python2.7/site-packages/requests-2.13.0-py2.7.egg/requests/packages/urllib3/util/connection.py
deleted file mode 100644
index bf699cfd..00000000
--- a/lib/python2.7/site-packages/requests-2.13.0-py2.7.egg/requests/packages/urllib3/util/connection.py
+++ /dev/null
@@ -1,130 +0,0 @@
-from __future__ import absolute_import
-import socket
-from .wait import wait_for_read
-from .selectors import HAS_SELECT, SelectorError
-
-
-def is_connection_dropped(conn): # Platform-specific
- """
- Returns True if the connection is dropped and should be closed.
-
- :param conn:
- :class:`httplib.HTTPConnection` object.
-
- Note: For platforms like AppEngine, this will always return ``False`` to
- let the platform handle connection recycling transparently for us.
- """
- sock = getattr(conn, 'sock', False)
- if sock is False: # Platform-specific: AppEngine
- return False
- if sock is None: # Connection already closed (such as by httplib).
- return True
-
- if not HAS_SELECT:
- return False
-
- try:
- return bool(wait_for_read(sock, timeout=0.0))
- except SelectorError:
- return True
-
-
-# This function is copied from socket.py in the Python 2.7 standard
-# library test suite. Added to its signature is only `socket_options`.
-# One additional modification is that we avoid binding to IPv6 servers
-# discovered in DNS if the system doesn't have IPv6 functionality.
-def create_connection(address, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
- source_address=None, socket_options=None):
- """Connect to *address* and return the socket object.
-
- Convenience function. Connect to *address* (a 2-tuple ``(host,
- port)``) and return the socket object. Passing the optional
- *timeout* parameter will set the timeout on the socket instance
- before attempting to connect. If no *timeout* is supplied, the
- global default timeout setting returned by :func:`getdefaulttimeout`
- is used. If *source_address* is set it must be a tuple of (host, port)
- for the socket to bind as a source address before making the connection.
- An host of '' or port 0 tells the OS to use the default.
- """
-
- host, port = address
- if host.startswith('['):
- host = host.strip('[]')
- err = None
-
- # Using the value from allowed_gai_family() in the context of getaddrinfo lets
- # us select whether to work with IPv4 DNS records, IPv6 records, or both.
- # The original create_connection function always returns all records.
- family = allowed_gai_family()
-
- for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
- af, socktype, proto, canonname, sa = res
- sock = None
- try:
- sock = socket.socket(af, socktype, proto)
-
- # If provided, set socket level options before connecting.
- _set_socket_options(sock, socket_options)
-
- if timeout is not socket._GLOBAL_DEFAULT_TIMEOUT:
- sock.settimeout(timeout)
- if source_address:
- sock.bind(source_address)
- sock.connect(sa)
- return sock
-
- except socket.error as e:
- err = e
- if sock is not None:
- sock.close()
- sock = None
-
- if err is not None:
- raise err
-
- raise socket.error("getaddrinfo returns an empty list")
-
-
-def _set_socket_options(sock, options):
- if options is None:
- return
-
- for opt in options:
- sock.setsockopt(*opt)
-
-
-def allowed_gai_family():
- """This function is designed to work in the context of
- getaddrinfo, where family=socket.AF_UNSPEC is the default and
- will perform a DNS search for both IPv6 and IPv4 records."""
-
- family = socket.AF_INET
- if HAS_IPV6:
- family = socket.AF_UNSPEC
- return family
-
-
-def _has_ipv6(host):
- """ Returns True if the system can bind an IPv6 address. """
- sock = None
- has_ipv6 = False
-
- if socket.has_ipv6:
- # has_ipv6 returns true if cPython was compiled with IPv6 support.
- # It does not tell us if the system has IPv6 support enabled. To
- # determine that we must bind to an IPv6 address.
- # https://github.com/shazow/urllib3/pull/611
- # https://bugs.python.org/issue658327
- try:
- sock = socket.socket(socket.AF_INET6)
- sock.bind((host, 0))
- has_ipv6 = True
- except Exception:
- pass
-
- if sock:
- sock.close()
- return has_ipv6
-
-
-HAS_IPV6 = _has_ipv6('::1')