def _getaddrinfo(*args, **kwargs):
global _dnscaache
if args in _dnscaache:
return _dnscaache[args]
else:
_dnscaache[args] = socket._getaddrinfo(*args, **kwargs)
return _dnscaache[args]
def _fast_getaddrinfo(host, *args, **kwargs):
def needs_dns_resolving(host2):
try:
ipaddress.ip_address(host2)
return False # already valid IP
except ValueError:
pass # not an IP
if str(host) in ('localhost', 'localhost.',):
return False
return True
try:
if needs_dns_resolving(host):
answers = dns.resolver.query(host)
addr = str(answers[0])
else:
addr = host
except dns.exception.DNSException as e:
# dns failed for some reason, e.g. dns.resolver.NXDOMAIN
# this is normal. Simply report back failure:
raise socket.gaierror(11001, 'getaddrinfo failed') from e
except BaseException as e:
# Possibly internal error in dnspython :( see #4483
# Fall back to original socket.getaddrinfo to resolve dns.
print_error('dnspython failed to resolve dns with error:', e)
addr = host
return socket._getaddrinfo(addr, *args, **kwargs)
def _fast_getaddrinfo(host, *args, **kwargs):
def needs_dns_resolving(host2):
try:
ipaddress.ip_address(host2)
return False # already valid IP
except ValueError:
pass # not an IP
if str(host) in (
'localhost',
'localhost.',
):
return False
return True
try:
if needs_dns_resolving(host):
answers = dns.resolver.query(host)
addr = str(answers[0])
else:
addr = host
except dns.exception.DNSException as e:
# dns failed for some reason, e.g. dns.resolver.NXDOMAIN
# this is normal. Simply report back failure:
raise socket.gaierror(11001, 'getaddrinfo failed') from e
except BaseException as e:
# Possibly internal error in dnspython :( see #4483
# Fall back to original socket.getaddrinfo to resolve dns.
print_error('dnspython failed to resolve dns with error:', e)
addr = host
return socket._getaddrinfo(addr, *args, **kwargs)
def _fast_getaddrinfo(host, *args, **kwargs):
def needs_dns_resolving(host):
try:
ipaddress.ip_address(host)
return False # already valid IP
except ValueError:
pass # not an IP
if _is_force_system_dns_for_host(host):
return False
return True
def resolve_with_dnspython(host):
addrs = []
expected_errors = (dns.resolver.NXDOMAIN, dns.resolver.NoAnswer,
concurrent.futures.CancelledError,
concurrent.futures.TimeoutError)
ipv6_fut = _dns_threads_executor.submit(dns.resolver.resolve, host,
dns.rdatatype.AAAA)
ipv4_fut = _dns_threads_executor.submit(dns.resolver.resolve, host,
dns.rdatatype.A)
# try IPv6
try:
answers = ipv6_fut.result()
addrs += [str(answer) for answer in answers]
except expected_errors as e:
pass
except BaseException as e:
_logger.info(
f'dnspython failed to resolve dns (AAAA) for {repr(host)} with error: {repr(e)}'
)
# try IPv4
try:
answers = ipv4_fut.result()
addrs += [str(answer) for answer in answers]
except expected_errors as e:
# dns failed for some reason, e.g. dns.resolver.NXDOMAIN this is normal.
# Simply report back failure; except if we already have some results.
if not addrs:
raise socket.gaierror(11001, 'getaddrinfo failed') from e
except BaseException as e:
# Possibly internal error in dnspython :( see #4483 and #5638
_logger.info(
f'dnspython failed to resolve dns (A) for {repr(host)} with error: {repr(e)}'
)
if addrs:
return addrs
# Fall back to original socket.getaddrinfo to resolve dns.
return [host]
addrs = [host]
if needs_dns_resolving(host):
addrs = resolve_with_dnspython(host)
list_of_list_of_socketinfos = [
socket._getaddrinfo(addr, *args, **kwargs) for addr in addrs
]
list_of_socketinfos = [
item for lst in list_of_list_of_socketinfos for item in lst
]
return list_of_socketinfos
def _getaddrinfo(*args, **kwargs):
if args in _dnscache:
# print('使用了dns缓存:%s' % _dnscache[args])
return _dnscache[args]
else:
_dnscache[args] = socket._getaddrinfo(*args, **kwargs)
# print('添加dns缓存:%s' % _dnscache[args])
return _dnscache[args]
def _getaddrinfo(*args, **kwargs):
global _dnscache
if args in _dnscache: #如果dns缓冲中有
return _dnscache[args] #则返回缓存中的ip
else: #如果没有
_dnscache[args] = socket._getaddrinfo(*args,
**kwargs) #进行dns查询并将结果放入缓存中
return _dnscache[args]
def _getaddrinfo(*args, **kwargs):
if args in _dnscache:
# print str(args) + " in cache"
return _dnscache[args]
else:
# print str(args) + " not in cache"
_dnscache[args] = socket._getaddrinfo(*args, **kwargs)
return _dnscache[args]
def _caching_getaddrinfo(*args, **kwargs):
try:
query = (args)
res = _dns_cache[query]
return res
except KeyError:
res = socket._getaddrinfo(*args, **kwargs)
_dns_cache[args] = res
return res
def _getaddrinfo(*args, **kwargs):
global _dnscache
if args in _dnscache:
print str(args) + " in cache"
return _dnscache[args]
else:
print str(args) + " not in cache"
_dnscache[args] = socket._getaddrinfo(*args, **kwargs)
return _dnscache[args]
def _getaddrinfo(*args, **kwargs):
if args in dns_cache:
LOGGER.debug(f'Use dns cache {args}:{dns_cache[args]}')
return dns_cache[args]
else:
LOGGER.debug(f'Without dns cache {args}')
dns_cache[args] = socket._getaddrinfo(*args, **kwargs)
return dns_cache[args]
def _getaddrinfo(*args, **kwargs):
global _dnscache
if args in _dnscache:
# print(str(args) + " in cache")
return _dnscache[args]
else:
# print(str(args) + " not in cache")
_dnscache[args] = socket._getaddrinfo(*args, **kwargs)
return _dnscache[args]
def _getaddrinfo(*args, **kwargs):
self.m_dns_cache_mutex.acquire()
dns_info = None
if args in self.m_dnscache:
dns_info = self.m_dnscache[args]
else:
dns_info = socket._getaddrinfo(*args, **kwargs)
self.m_dnscache[args] = dns_info
self.m_dns_cache_mutex.release()
return dns_info
def fast_getaddrinfo(host, *args, **kwargs):
try:
if str(host) not in ('localhost', 'localhost.',):
answers = dns.resolver.query(host)
addr = str(answers[0])
else:
addr = host
except:
raise socket.gaierror(11001, 'getaddrinfo failed')
else:
return socket._getaddrinfo(addr, *args, **kwargs)
def fast_getaddrinfo(host, *args, **kwargs):
try:
if str(host) not in ('localhost', 'localhost.',):
answers = dns.resolver.query(host)
addr = str(answers[0])
else:
addr = host
except:
raise socket.gaierror(11001, 'getaddrinfo failed')
else:
return socket._getaddrinfo(addr, *args, **kwargs)
def _caching_getaddrinfo(*args, **kwargs):
try:
query = (args)
res = _dns_cache[query]
#This was too noisy and not so usefull
om.out.debug('Cached DNS response for domain: ' + query[0] )
return res
except KeyError:
res = socket._getaddrinfo(*args, **kwargs)
_dns_cache[args] = res
om.out.debug('DNS response from DNS server for domain: ' + query[0] )
return res
def _caching_getaddrinfo(*args, **kwargs):
try:
query = (args)
res = _dns_cache[query]
#This was too noisy and not so useful
#om.out.debug('Cached DNS response for domain: ' + query[0] )
return res
except KeyError:
res = socket._getaddrinfo(*args, **kwargs)
_dns_cache[args] = res
om.out.debug('DNS response from DNS server for domain: ' +
query[0])
return res
def _getaddrinfo(*args, **kwargs):
# print
global _dnscache
if args in _dnscache:
# print args, " in cache", _dnscache[args]
return _dnscache[args]
else:
_dnscache.setdefault(args, [])
# print args, "not in cache"
addrinfo_list = get_addrinfo(*args[:1])
if not addrinfo_list:
_dnscache[args] = socket._getaddrinfo(*args, **kwargs)
return _dnscache[args]
for i in addrinfo_list:
addrinfo = (2, 1, 0, '', (i, args[1]))
# print args, "add address:", addrinfo
_dnscache[args].append(addrinfo)
if file_name:
with file(file_name, "a")as f:
dns_setting = i + " " + args[0] + "\n"
f.write(dns_setting)
return _dnscache[args]
def _getaddrinfo(*args, **kwargs):
if args[0] in _dnscache:
return _dnscache[args[0]]
else:
_dnscache[args[0]] = socket._getaddrinfo(*args, **kwargs)
return _dnscache[args[0]]
def getaddrinfo(host, port, *args, **kwargs):
if _is_force_system_dns_for_host(host):
return socket._getaddrinfo(host, port, *args, **kwargs)
return [(socket.AF_INET, socket.SOCK_STREAM, 6, '', (host, port))]
def _getaddrinfo(*args, **kwargs):
if args in self._dnscache:
return self._dnscache[args]
else:
self._dnscache[args] = socket._getaddrinfo(*args, **kwargs)
return self._dnscache[args]
