def __init__(self,
sntp_servers: Iterable[IPv6Address],
always_send: bool = False):
option = SNTPServersOption(sntp_servers=sntp_servers)
option.validate()
super().__init__(option, always_send=always_send)
def setUp(self):
self.option_bytes = bytes.fromhex('001f0020'
'20010db8000000000000000000000001'
'20010db8000000000000000000000002')
self.option_object = SNTPServersOption(sntp_servers=[IPv6Address('2001:db8::1'),
IPv6Address('2001:db8::2')])
self.parse_option()
def test_bad_option_length(self):
with self.assertRaisesRegex(ValueError, 'length must be a multiple of 16'):
SNTPServersOption.parse(bytes.fromhex('001f000f20010db8000000000000000000000001'))
with self.assertRaisesRegex(ValueError, 'longer than the available buffer'):
SNTPServersOption.parse(bytes.fromhex('001f001120010db8000000000000000000000001'))
with self.assertRaisesRegex(ValueError, 'length must be a multiple of 16'):
SNTPServersOption.parse(bytes.fromhex('001f001120010db800000000000000000000000100'))
def test_bad_option_length(self):
with self.assertRaisesRegex(ValueError, 'length must be a multiple of 16'):
SNTPServersOption.parse(bytes.fromhex('001f000f20010db8000000000000000000000001'))
with self.assertRaisesRegex(ValueError, 'longer than the available buffer'):
SNTPServersOption.parse(bytes.fromhex('001f001120010db8000000000000000000000001'))
with self.assertRaisesRegex(ValueError, 'length must be a multiple of 16'):
SNTPServersOption.parse(bytes.fromhex('001f001120010db800000000000000000000000100'))
def combine(
self, existing_options: Iterable[SNTPServersOption]
) -> SNTPServersOption:
"""
Combine multiple options into one.
:param existing_options: The existing options to include NTP servers from
:return: The combined option
"""
sntp_servers = []
# Add from existing options first
for option in existing_options:
for sntp_server in option.sntp_servers:
if sntp_server not in sntp_servers:
sntp_servers.append(sntp_server)
# Then add our own
for sntp_server in self.option.sntp_servers:
if sntp_server not in sntp_servers:
sntp_servers.append(sntp_server)
# And return a new option with the combined addresses
return SNTPServersOption(sntp_servers=sntp_servers)
def __init__(self, sntp_servers: Iterable[IPv6Address], always_send: bool = False):
option = SNTPServersOption(sntp_servers=sntp_servers)
option.validate()
super().__init__(option, always_send=always_send)
def __init__(self, sntp_servers: [IPv6Address]):
option = SNTPServersOption(sntp_servers=sntp_servers)
option.validate()
super().__init__(option)
