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shadowsocksr
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add config "udp_timeout" 

drop TCP over UDP query
dev
BreakWa11 9 years ago
parent
4e43a4932d
commit
d47b0d47ea
2 changed files with 70 additions and 65 deletions
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  1. 1
      shadowsocks/shell.py
  2. 132
      shadowsocks/udprelay.py

1
shadowsocks/shell.py
View File

@ -236,6 +236,7 @@ def get_config(is_local):
config['obfs_param'] = to_str(config.get('obfs_param', ''))
config['port_password'] = config.get('port_password', None)
config['timeout'] = int(config.get('timeout', 300))
config['udp_timeout'] = int(config.get('udp_timeout', config['timeout']))
config['fast_open'] = config.get('fast_open', False)
config['workers'] = config.get('workers', 1)
config['pid-file'] = config.get('pid-file', '/var/run/shadowsocks.pid')

132
shadowsocks/udprelay.py
View File

@ -880,7 +880,7 @@ class UDPRelay(object):
self._method = config['method']
self._timeout = config['timeout']
self._is_local = is_local
self._cache = lru_cache.LRUCache(timeout=config['timeout'],
self._cache = lru_cache.LRUCache(timeout=config['udp_timeout'],
close_callback=self._close_client)
self._client_fd_to_server_addr = {}
self._dns_cache = lru_cache.LRUCache(timeout=300)
@ -1023,69 +1023,8 @@ class UDPRelay(object):
return
if type(data) is tuple:
#(cmd, request_id, data)
#logging.info("UDP data %d %d %s" % (data[0], data[1], binascii.hexlify(data[2])))
try:
self.server_transfer_ul += len(data[2])
if data[0] == 0:
if len(data[2]) >= 4:
for i in range(64):
req_id = random.randint(1, 65535)
if req_id not in self._reqid_to_hd:
break
if req_id in self._reqid_to_hd:
for i in range(64):
req_id = random.randint(1, 65535)
if type(self._reqid_to_hd[req_id]) is tuple:
break
# return req id
self._reqid_to_hd[req_id] = (data[2][0:4], None)
rsp_data = self._pack_rsp_data(CMD_RSP_CONNECT, req_id, RSP_STATE_CONNECTED)
data_to_send = encrypt.encrypt_all(self._password, self._method, 1, rsp_data)
self.write_to_server_socket(data_to_send, r_addr)
elif data[0] == CMD_CONNECT_REMOTE:
if len(data[2]) > 4 and data[1] in self._reqid_to_hd:
# create
if type(self._reqid_to_hd[data[1]]) is tuple:
if data[2][0:4] == self._reqid_to_hd[data[1]][0]:
handle = TCPRelayHandler(self, self._reqid_to_hd, self._fd_to_handlers,
self._eventloop, self._server_socket,
self._reqid_to_hd[data[1]][0], self._reqid_to_hd[data[1]][1],
self._config, self._dns_resolver, self._is_local)
self._reqid_to_hd[data[1]] = handle
handle.handle_client(r_addr, CMD_CONNECT, data[1], data[2])
handle.handle_client(r_addr, *data)
self.update_activity(handle)
else:
# disconnect
rsp_data = self._pack_rsp_data(CMD_DISCONNECT, data[1], RSP_STATE_EMPTY)
data_to_send = encrypt.encrypt_all(self._password, self._method, 1, rsp_data)
self.write_to_server_socket(data_to_send, r_addr)
else:
self.update_activity(self._reqid_to_hd[data[1]])
self._reqid_to_hd[data[1]].handle_client(r_addr, *data)
else:
# disconnect
rsp_data = self._pack_rsp_data(CMD_DISCONNECT, data[1], RSP_STATE_EMPTY)
data_to_send = encrypt.encrypt_all(self._password, self._method, 1, rsp_data)
self.write_to_server_socket(data_to_send, r_addr)
elif data[0] > CMD_CONNECT_REMOTE and data[0] <= CMD_DISCONNECT:
if data[1] in self._reqid_to_hd:
if type(self._reqid_to_hd[data[1]]) is tuple:
pass
else:
self.update_activity(self._reqid_to_hd[data[1]])
self._reqid_to_hd[data[1]].handle_client(r_addr, *data)
else:
# disconnect
rsp_data = self._pack_rsp_data(CMD_DISCONNECT, data[1], RSP_STATE_EMPTY)
data_to_send = encrypt.encrypt_all(self._password, self._method, 1, rsp_data)
self.write_to_server_socket(data_to_send, r_addr)
return
except Exception as e:
trace = traceback.format_exc()
logging.error(trace)
return
return self._handle_tcp_over_udp(data, r_addr)
try:
header_result = parse_header(data)
@ -1105,6 +1044,7 @@ class UDPRelay(object):
addrs = self._dns_cache.get(server_addr, None)
if addrs is None:
# TODO async getaddrinfo
addrs = socket.getaddrinfo(server_addr, server_port, 0,
socket.SOCK_DGRAM, socket.SOL_UDP)
if not addrs:
@ -1117,7 +1057,6 @@ class UDPRelay(object):
key = client_key(r_addr, af)
client = self._cache.get(key, None)
if not client:
# TODO async getaddrinfo
if self._forbidden_iplist:
if common.to_str(sa[0]) in self._forbidden_iplist:
logging.debug('IP %s is in forbidden list, drop' %
@ -1163,6 +1102,71 @@ class UDPRelay(object):
else:
shell.print_exception(e)
def _handle_tcp_over_udp(self, data, r_addr):
#(cmd, request_id, data)
#logging.info("UDP data %d %d %s" % (data[0], data[1], binascii.hexlify(data[2])))
try:
self.server_transfer_ul += len(data[2])
if data[0] == 0:
if len(data[2]) >= 4:
for i in range(64):
req_id = random.randint(1, 65535)
if req_id not in self._reqid_to_hd:
break
if req_id in self._reqid_to_hd:
for i in range(64):
req_id = random.randint(1, 65535)
if type(self._reqid_to_hd[req_id]) is tuple:
break
# return req id
self._reqid_to_hd[req_id] = (data[2][0:4], None)
rsp_data = self._pack_rsp_data(CMD_RSP_CONNECT, req_id, RSP_STATE_CONNECTED)
data_to_send = encrypt.encrypt_all(self._password, self._method, 1, rsp_data)
self.write_to_server_socket(data_to_send, r_addr)
elif data[0] == CMD_CONNECT_REMOTE:
if len(data[2]) > 4 and data[1] in self._reqid_to_hd:
# create
if type(self._reqid_to_hd[data[1]]) is tuple:
if data[2][0:4] == self._reqid_to_hd[data[1]][0]:
handle = TCPRelayHandler(self, self._reqid_to_hd, self._fd_to_handlers,
self._eventloop, self._server_socket,
self._reqid_to_hd[data[1]][0], self._reqid_to_hd[data[1]][1],
self._config, self._dns_resolver, self._is_local)
self._reqid_to_hd[data[1]] = handle
handle.handle_client(r_addr, CMD_CONNECT, data[1], data[2])
handle.handle_client(r_addr, *data)
self.update_activity(handle)
else:
# disconnect
rsp_data = self._pack_rsp_data(CMD_DISCONNECT, data[1], RSP_STATE_EMPTY)
data_to_send = encrypt.encrypt_all(self._password, self._method, 1, rsp_data)
self.write_to_server_socket(data_to_send, r_addr)
else:
self.update_activity(self._reqid_to_hd[data[1]])
self._reqid_to_hd[data[1]].handle_client(r_addr, *data)
else:
# disconnect
rsp_data = self._pack_rsp_data(CMD_DISCONNECT, data[1], RSP_STATE_EMPTY)
data_to_send = encrypt.encrypt_all(self._password, self._method, 1, rsp_data)
self.write_to_server_socket(data_to_send, r_addr)
elif data[0] > CMD_CONNECT_REMOTE and data[0] <= CMD_DISCONNECT:
if data[1] in self._reqid_to_hd:
if type(self._reqid_to_hd[data[1]]) is tuple:
pass
else:
self.update_activity(self._reqid_to_hd[data[1]])
self._reqid_to_hd[data[1]].handle_client(r_addr, *data)
else:
# disconnect
rsp_data = self._pack_rsp_data(CMD_DISCONNECT, data[1], RSP_STATE_EMPTY)
data_to_send = encrypt.encrypt_all(self._password, self._method, 1, rsp_data)
self.write_to_server_socket(data_to_send, r_addr)
return
except Exception as e:
trace = traceback.format_exc()
logging.error(trace)
return
def _handle_client(self, sock):
data, r_addr = sock.recvfrom(BUF_SIZE)
if not data:

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