o j%@sddlmZddlZddlmZddlmZddlmZddl m Z m Z d d Z ej ddfd d Zd dZddZddZedZdS))absolute_importN)_appengine_environ)LocationParseError)six)NoWayToWaitForSocketError wait_for_readcCsHt|dd}|dur dS|durdSzt|ddWSty#YdSw)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)connr r/root/aizidognhua/tmp/workspace/projects/ec89d86c-575f-41c9-af57-ac45cbdbf775/venv/lib/python3.10/site-packages/pip/_vendor/urllib3/util/connection.pyis_connection_dropped s  rc Cs(|\}}|dr|d}d}t}z|dWnty-ttd|dYSwt |||tj D]Q}|\} } } } } d}z't| | | }t |||tj urY| ||r`|||| |WStjy}z|}|dur~|d}WYd}~q7d}~ww|dur|td)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[]Nidnaz'%s', label empty or too longz!getaddrinfo returns an empty list) startswithstripallowed_gai_familyencode UnicodeErrorr raise_fromrsocket getaddrinfo SOCK_STREAM_set_socket_options_GLOBAL_DEFAULT_TIMEOUT settimeoutbindconnecterrorclose)addressr source_addresssocket_optionshostporterrfamilyresafsocktypeproto canonnamesar errrcreate_connection%sD           r1cCs$|durdS|D]}|j|qdS)N) setsockopt)r optionsoptrrrrds  rcCstj}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.)rAF_INETHAS_IPV6 AF_UNSPEC)r)rrrrlsrcCs`d}d}tr dStjr(zttj}||dfd}Wn ty'Ynw|r.||S)z4Returns True if the system can bind an IPv6 address.NFrT)ris_appengine_sandboxrhas_ipv6AF_INET6r Exceptionr")r&r r9rrr _has_ipv6ws  r<z::1) __future__rrcontribr exceptionsrpackagesrwaitrr rrr1rrr<r6rrrrs     ?