proxylib.py 文件源码

def get_country_code(self, hostname, dnsservers):
        """http://dev.maxmind.com/geoip/legacy/codes/iso3166/"""
        try:
            return self.region_cache[hostname]
        except KeyError:
            pass
        try:
            if re.match(r'^\d+\.\d+\.\d+\.\d+$', hostname) or ':' in hostname:
                iplist = [hostname]
            elif dnsservers:
                iplist = dnslib_record2iplist(dnslib_resolve_over_udp(hostname, dnsservers, timeout=2))
            else:
                iplist = socket.gethostbyname_ex(hostname)[-1]
            if iplist[0].startswith(('127.', '192.168.', '10.')):
                country_code = 'LOCAL'
            else:
                country_code = self.geoip.country_code_by_addr(iplist[0])
        except StandardError as e:
            logging.warning('DirectRegionFilter cannot determine region for hostname=%r %r', hostname, e)
            country_code = ''
        self.region_cache[hostname] = country_code
        return country_code