def udp_readable(self, message, address):
addr_id = "%s-%s" % address
if addr_id not in self.__permits: return
self.__update_time = time.time()
n_saddr = socket.inet_aton(address[0])
sport = address[1]
if self.__is_ipv6:
mtu = 1280
else:
mtu = 1500
udp_packets = ippkts.build_udp_packets(n_saddr,
self.__byte_internal_ip,
sport,
self.__port,
message,
mtu=mtu,
is_udplite=self.__is_udplite,
is_ipv6=self.__is_ipv6)
for udp_pkt in udp_packets:
self.dispatcher.send_msg_to_tunnel_from_p2p_proxy(
self.__session_id, udp_pkt)
return
def __handle_msg_from_response(self, message):
try:
msg = dns.message.from_wire(message)
except:
return
dns_id = (message[0] << 8) | message[1]
if not self.dns_id_map_exists(dns_id): return
saddr, daddr, dport, n_dns_id, flags, is_ipv6 = self.get_dns_id_map(dns_id)
self.del_dns_id_map(dns_id)
L = list(message)
L[0:2] = (
(n_dns_id & 0xff00) >> 8,
n_dns_id & 0xff,
)
message = bytes(L)
for rrset in msg.answer:
for cname in rrset:
ip = cname.__str__()
if utils.is_ipv4_address(ip):
self.__set_route(ip, flags, is_ipv6=False)
if utils.is_ipv6_address(ip):
self.__set_route(ip, flags, is_ipv6=True)
''''''
''''''
if not self.__server_side:
if self.__is_ipv6:
mtu = 1280
else:
mtu = 1500
packets = ippkts.build_udp_packets(saddr, daddr, 53, dport, message, mtu=mtu, is_ipv6=self.__is_ipv6)
for packet in packets:
self.dispatcher.send_msg_to_tun(packet)
self.del_dns_id_map(dns_id)
self.__timer.drop(dns_id)
return
if self.__is_ipv6 != is_ipv6 and self.__server_side:
if self.__is_ipv6:
is_ipv6 = False
else:
is_ipv6 = True
self.dispatcher.send_msg_to_other_dnsservice_for_dns_response(message, is_ipv6=is_ipv6)
if self.__is_ipv6:
sts_daddr = socket.inet_ntop(socket.AF_INET6, daddr)
else:
sts_daddr = socket.inet_ntop(socket.AF_INET, daddr)
self.del_dns_id_map(dns_id)
self.__timer.drop(dns_id)
self.sendto(message, (sts_daddr, dport))
self.add_evt_write(self.fileno)
def udp_readable(self, message, address):
addr_id = "%s-%s" % address
if addr_id not in self.__permits: return
n_saddr = socket.inet_aton(address[0])
sport = address[1]
udp_packets = ippkts.build_udp_packets(n_saddr, self.__byte_internal_ip, sport, self.__port, message,
mtu=self.__mtu, is_udplite=self.__is_udplite, is_ipv6=self.__is_ipv6)
self.__packets += udp_packets
self.__send_to_tunnel()