def _optional_dependencies():
try:
import ipaddress # noqa
logger.debug('ipaddress module is available')
ipaddr = True
except ImportError:
logger.warn('ipaddress module is unavailable')
ipaddr = False
if sys.hexversion < 0x030500F0:
try:
from backports.ssl_match_hostname import match_hostname, __version__ as ver
ver = list(map(int, ver.split('.')))
logger.debug('backports.ssl_match_hostname module is available')
match = match_hostname
if ver[0] * 10 + ver[1] >= 35:
return ipaddr, match
else:
logger.warn('backports.ssl_match_hostname module is too old')
ipaddr = False
except ImportError:
logger.warn('backports.ssl_match_hostname is unavailable')
ipaddr = False
try:
from ssl import match_hostname
logger.debug('ssl.match_hostname is available')
match = match_hostname
except ImportError:
logger.warn('using legacy validation callback')
match = legacy_validate_callback
return ipaddr, match
def _optional_dependencies():
try:
import ipaddress # noqa
logger.debug('ipaddress module is available')
ipaddr = True
except ImportError:
logger.warn('ipaddress module is unavailable')
ipaddr = False
if sys.hexversion < 0x030500F0:
try:
from backports.ssl_match_hostname import match_hostname, __version__ as ver
ver = list(map(int, ver.split('.')))
logger.debug('backports.ssl_match_hostname module is available')
match = match_hostname
if ver[0] * 10 + ver[1] >= 35:
return ipaddr, match
else:
logger.warn('backports.ssl_match_hostname module is too old')
ipaddr = False
except ImportError:
logger.warn('backports.ssl_match_hostname is unavailable')
ipaddr = False
try:
from ssl import match_hostname
logger.debug('ssl.match_hostname is available')
match = match_hostname
except ImportError:
logger.warn('using legacy validation callback')
match = legacy_validate_callback
return ipaddr, match