最好不依赖本地库的内容更好。
使用dnspython:
>>> import dns.resolver
>>> domain='jabberzac.org'
>>> srvInfo = {}
>>> srv_records=dns.resolver.query('_xmpp-client._tcp.'+domain, 'SRV')
>>> for srv in srv_records:
... srvInfo['weight'] = srv.weight
... srvInfo['host'] = str(srv.target).rstrip('.')
... srvInfo['priority'] = srv.priority
... srvInfo['port'] = srv.port
...
>>> print srvInfo
{'priority': 0, 'host': 'xmpp.jabberzac.org', 'port': 5222, 'weight': 0}
Twisted拥有出色的纯Python实现,可以参考twisted.names源码,特别是dns.py。如果您无法使用他们的所有代码,也许可以从该文件中提取并重新使用其中的Record_SRV
类。
import DNS
DNS.ParseResolvConf()
srv_req = DNS.Request(qtype = 'srv')
srv_result = srv_req.req('_ldap._tcp.example.org')
for result in srv_result.answers:
if result['typename'] == 'SRV':
print result['data']