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Code Issues Releases Wiki Activity

Fixed DNS queries caching issue.

This commit is contained in:
morpheus65535 2022-06-24 07:49:51 -04:00
parent c8c815e240
commit f543368089
1 changed files with 5 additions and 3 deletions
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8
libs/subliminal_patch/http.py
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@ -320,14 +320,16 @@ def patch_create_connection():
"""Wrap urllib3's create_connection to resolve the name elsewhere"""
# resolve hostname to an ip address; use your own
# resolver here, as otherwise the system resolver will be used.
__custom_resolver_ips = os.environ.get("dns_resolvers", None)
if not __custom_resolver_ips:
return _orig_create_connection(address, *args, **kwargs)
global _custom_resolver, _custom_resolver_ips, dns_cache
host, port = address
try:
ipaddress.ip_address(six.text_type(host))
except (ipaddress.AddressValueError, ValueError):
__custom_resolver_ips = os.environ.get("dns_resolvers", None)
# resolver ips changed in the meantime?
if __custom_resolver_ips != _custom_resolver_ips:
_custom_resolver = None
@ -362,7 +364,7 @@ def patch_create_connection():
except dns.exception.DNSException:
logger.warning("DNS: Couldn't resolve %s with DNS: %s", host, custom_resolver.nameservers)
# logger.debug("DNS: Falling back to default DNS or IP on %s", host) <-- commented because it makes way too much noise in debug logs
logger.debug("DNS: Falling back to default DNS or IP on %s", host)
return _orig_create_connection((host, port), *args, **kwargs)
patch_create_connection._sz_patched = True