a oe%@sddlmZddlZddlmZddlmZddlmZddl m Z m Z d d Z ej ddfd d Zd dZddZddZedZdS))absolute_importN)_appengine_environ)LocationParseError)six)NoWayToWaitForSocketError wait_for_readcCsLt|dd}|durdS|dur$dSzt|ddWStyFYdS0dS)a$ Returns True if the connection is dropped and should be closed. :param conn: :class:`http.client.HTTPConnection` object. Note: For platforms like AppEngine, this will always return ``False`` to let the platform handle connection recycling transparently for us. sockFNTg)timeout)getattrr r)Zconnr r 8C:\Program Files\Certbot\pkgs\urllib3\util\connection.pyis_connection_dropped s  rc Cs4|\}}|dr|d}d}t}z|dWn&tyZttd|dYS0t |||tj D]}|\} } } } } d}zNt| | | }t |||tj ur| ||r|||| |WStjy}z&|}|dur|d}WYd}~qnd}~00qn|dur&|tddS)akConnect 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:`socket.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. [z[]NZidnaz'%s', label empty or too longz!getaddrinfo returns an empty list) startswithstripallowed_gai_familyencode UnicodeErrorrZ raise_fromrsocketZ getaddrinfoZ SOCK_STREAM_set_socket_options_GLOBAL_DEFAULT_TIMEOUTZ settimeoutbindZconnecterrorclose)Zaddressr Zsource_addressZsocket_optionshostporterrfamilyresafZsocktypeprotoZ canonnameZsar er r rcreate_connection%s>            r$cCs$|dur dS|D]}|j|qdS)N)Z setsockopt)r optionsoptr r rrdsrcCstj}trtj}|S)zThis 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.)rZAF_INETHAS_IPV6Z AF_UNSPEC)rr r rrlsrcCs`d}d}trdStjrPz"ttj}||dfd}WntyNYn0|r\||S)z4Returns True if the system can bind an IPv6 address.NFrT)rZis_appengine_sandboxrhas_ipv6ZAF_INET6r Exceptionr)rr r(r r r _has_ipv6ws  r*z::1)Z __future__rrZcontribr exceptionsrZpackagesrwaitrr rrr$rrr*r'r r r rs     ?