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fix tcp fastopen

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This commit is contained in:
clowwindy 2014-06-20 22:32:02 +08:00
parent 41010d810e
commit cb5481499e
1 changed files with 32 additions and 28 deletions
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60
shadowsocks/tcprelay.py
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@ -200,10 +200,12 @@ class TCPRelayHandler(object):
self._config['fast_open']:
try:
self._fastopen_connected = True
remote_sock = self._create_remote_socket(self._chosen_server[0],
self._chosen_server[1])
self._loop.add(remote_sock, eventloop.POLL_ERR)
data = ''.join(self._data_to_write_to_local)
l = len(data)
s = self._remote_sock.sendto(data, MSG_FASTOPEN,
self._chosen_server)
s = remote_sock.sendto(data, MSG_FASTOPEN, self._chosen_server)
if s < l:
data = data[s:]
self._data_to_write_to_local = [data]
@ -282,6 +284,19 @@ class TCPRelayHandler(object):
# TODO use logging when debug completed
self.destroy()
def _create_remote_socket(self, ip, port):
addrs = socket.getaddrinfo(ip, port, 0, socket.SOCK_STREAM,
socket.SOL_TCP)
if len(addrs) == 0:
raise Exception("getaddrinfo failed for %s:%d" % (ip, port))
af, socktype, proto, canonname, sa = addrs[0]
remote_sock = socket.socket(af, socktype, proto)
self._remote_sock = remote_sock
self._fd_to_handlers[remote_sock.fileno()] = self
remote_sock.setblocking(False)
remote_sock.setsockopt(socket.SOL_TCP, socket.TCP_NODELAY, 1)
return remote_sock
def _handle_dns_resolved(self, result, error):
if error:
logging.error(error)
@ -292,33 +307,22 @@ class TCPRelayHandler(object):
if ip:
try:
self._stage = STAGE_REPLY
remote_addr = self._remote_address[0]
remote_port = self._remote_address[1]
remote_addr = ip
if self._is_local:
remote_addr, remote_port = self._chosen_server
addrs = socket.getaddrinfo(ip, remote_port, 0,
socket.SOCK_STREAM,
socket.SOL_TCP)
if len(addrs) == 0:
raise Exception("getaddrinfo failed for %s:%d" %
(remote_addr, remote_port))
af, socktype, proto, canonname, sa = addrs[0]
remote_sock = socket.socket(af, socktype, proto)
self._remote_sock = remote_sock
self._fd_to_handlers[remote_sock.fileno()] = self
remote_sock.setblocking(False)
remote_sock.setsockopt(socket.SOL_TCP, socket.TCP_NODELAY,
1)
remote_port = self._chosen_server[1]
else:
remote_port = self._remote_address[1]
if self._is_local and self._config['fast_open']:
# wait for more data to arrive and send them in one SYN
self._stage = STAGE_REPLY
self._loop.add(remote_sock, eventloop.POLL_ERR)
self._update_stream(STREAM_UP, WAIT_STATUS_READING)
# TODO when there is already data in this packet
else:
remote_sock = self._create_remote_socket(remote_addr,
remote_port)
try:
remote_sock.connect(sa)
remote_sock.connect((remote_addr, remote_port))
except (OSError, IOError) as e:
if eventloop.errno_from_exception(e) == \
errno.EINPROGRESS:
@ -432,23 +436,23 @@ class TCPRelayHandler(object):
if sock == self._remote_sock:
if event & eventloop.POLL_ERR:
self._on_remote_error()
if self._stage == STAGE_DESTROYED:
return
if self._stage == STAGE_DESTROYED:
return
if event & (eventloop.POLL_IN | eventloop.POLL_HUP):
self._on_remote_read()
if self._stage == STAGE_DESTROYED:
return
if self._stage == STAGE_DESTROYED:
return
if event & eventloop.POLL_OUT:
self._on_remote_write()
elif sock == self._local_sock:
if event & eventloop.POLL_ERR:
self._on_local_error()
if self._stage == STAGE_DESTROYED:
return
if self._stage == STAGE_DESTROYED:
return
if event & (eventloop.POLL_IN | eventloop.POLL_HUP):
self._on_local_read()
if self._stage == STAGE_DESTROYED:
return
if self._stage == STAGE_DESTROYED:
return
if event & eventloop.POLL_OUT:
self._on_local_write()
else: