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/usr/share/pyshared/eventlet/green/socket.py is in python-eventlet 0.9.16-3.

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import os
import sys
from eventlet.hubs import get_hub
__import__('eventlet.green._socket_nodns')
__socket = sys.modules['eventlet.green._socket_nodns']

__all__     = __socket.__all__
__patched__ = __socket.__patched__ + ['gethostbyname', 'getaddrinfo', 'create_connection',]

from eventlet.patcher import slurp_properties
slurp_properties(__socket, globals(), srckeys=dir(__socket))


greendns = None
if os.environ.get("EVENTLET_NO_GREENDNS",'').lower() != "yes":
    try:
        from eventlet.support import greendns
    except ImportError, ex:
        pass

if greendns:
    gethostbyname = greendns.gethostbyname
    getaddrinfo = greendns.getaddrinfo
    gethostbyname_ex = greendns.gethostbyname_ex
    getnameinfo = greendns.getnameinfo
    __patched__ = __patched__ + ['gethostbyname_ex', 'getnameinfo']

def create_connection(address, 
                      timeout=_GLOBAL_DEFAULT_TIMEOUT, 
                      source_address=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.
    """

    msg = "getaddrinfo returns an empty list"
    host, port = address
    for res in getaddrinfo(host, port, 0, SOCK_STREAM):
        af, socktype, proto, canonname, sa = res
        sock = None
        try:
            sock = socket(af, socktype, proto)
            if timeout is not _GLOBAL_DEFAULT_TIMEOUT:
                sock.settimeout(timeout)
            if source_address:
                sock.bind(source_address)
            sock.connect(sa)
            return sock

        except error, msg:
            if sock is not None:
                sock.close()

    raise error, msg