def peer_address(self):
if self._address is None:
raise socket_error(errno.EBADF)
if self._peer_address is None:
raise socket_error(errno.ENOTCONN)
return self._peer_address
def listen(self, backlog):
if self._address is None:
raise socket_error(errno.EBADF)
if self._incoming_error != errno.ENOTCONN:
raise socket_error(platform.invalid_argument)
self.backlog = Store(self.env, capacity=backlog)
self.env._register(self)
def connect(self, address):
if self._address is None:
raise socket_error(errno.EBADF)
if self._peer is not None:
# Already connected, do nothing.
return
if self.backlog is not None:
raise socket_error(errno.EISCONN)
self.env._establish_connection(self, address)
def close(self):
# Stop reader and writer process if they are waiting for the next
# request.
if self._in_message_ev and not self._in_message_ev.triggered:
self._in_message_ev.fail(socket_error(errno.EBADF))
self._in_message_ev = None
if self._out_message_ev and not self._out_message_ev.triggered:
self._out_message_ev.fail(socket_error(errno.EBADF))
self._out_message_ev = None
self.sock.close()
def close(self):
"""Closes the socket, all further operations will raise ``EBADF``."""
if self._address is None:
return
self._incoming_error = errno.EBADF
self._outgoing_error = errno.EBADF
if self._incoming_avail is not None:
self._incoming_avail.succeed()
if self._outgoing_avail is not None:
self._outgoing_avail.succeed()
if self._frame_transmission:
# Wake the reader if it is currently waiting for a frame.
if not self._frame_transmission.triggered:
self._frame_transmission.succeed()
self._frame_transmission = None
if self.backlog is not None:
for accepter in self.backlog.get_queue:
if not accepter.triggered:
accepter.fail(socket_error(errno.EBADF))
self.env._unregister(self)
self._address = None
self._peer_address = None
def close(self):
# TODO Figure out if this behaviour is really usefull. Might require
# the addition of methods that check for the sockets state.
try:
fileno = self.fileno()
del self.env.fds[fileno]
# TODO Remove events.
if self._reader is not None:
self._reader.fail(socket_error(errno.EBADF))
self._reader = None
self.env._rd.remove(fileno)
if self._writer is not None:
self._writer.fail(socket_error(errno.EBADF))
self._writer = None
self.env._wd.remove(fileno)
self.sock.close()
except SocketError as e:
if e.errno == errno.EBADF:
return
raise e
def _try_read(self):
if self._incoming_error is not None:
self._reader.fail(socket_error(self._incoming_error))
self._reader = None
return
if not self.incoming:
return
data = self.incoming[:self._reader.amount]
self.incoming = self.incoming[self._reader.amount:]
self._reader.succeed(data)
self._reader = None
if self._incoming_avail:
self._incoming_avail.succeed()
self._incoming_avail = None
def _try_write(self):
if self._outgoing_error is not None:
self._writer.fail(socket_error(self._outgoing_error))
self._writer = None
return
available = self.max_buffer_size - len(self.outgoing)
if not available:
return
self.outgoing += self._writer.data[:available]
self._writer.succeed(min(len(self._writer.data), available))
self._writer = None
if self._outgoing_avail:
# Notify the reader process about the new data.
self._outgoing_avail.succeed()
self._outgoing_avail = None
def _get_address(self, address):
host, port = address
if host != '0.0.0.0':
for interface, routes in self.interfaces:
if interface == host: break
else:
errcode = socket.EAI_NONAME
raise socket.gaierror(errcode, os.strerror(errcode))
# A port number of zero means auto-choose.
if port == 0:
# Search for a free port starting from the current port_ofs.
for port in range(65535):
port = 1 + (self._port_ofs + port) % (65535 - 1)
if port not in self.ports:
break
else:
raise RuntimeError('No free port left')
self._port_ofs = port
elif port in self.ports:
raise socket_error(errno.EADDRINUSE)
return (host, port)
def _register(self, sock):
host, port = sock._address
if port in self.ports:
raise socket_error(errno.EADDRINUSE)
self.ports[port] = sock
def accept(self):
if self.backlog is None:
raise socket_error(platform.invalid_argument)
return self.backlog.get()
def bind(self, address):
if self._address is None:
raise socket_error(errno.EBADF)
if self._incoming_error != errno.ENOTCONN:
raise socket_error(platform.invalid_argument)
self._address = self.env._get_address(address)
def address(self):
if self._address is None:
raise socket_error(errno.EBADF)
return self._address
def fileno(self):
fileno = self.sock.fileno()
if fileno < 0:
raise socket_error(errno.EBADF)
return fileno
def _reader(self, data=b'', mask=False):
try:
read = self.socket.read
blocksize = self.blocksize
headers = frame_headers[mask]
while True:
event = None
event = yield self._read_ev
self._read_ev = self.env.event()
while len(data) < headers[0].size:
data += yield read(4096)
# Parse header.
header = bytearray(data[:headers[0].size])
opcode = header[0]
if mask and not header[1] & 0x80:
raise RuntimeError('Masking bit was not set')
length_desc = 0x7f & header[1]
if length_desc == 126:
while len(data) < headers[1].size:
data += yield read(blocksize)
header = headers[1].unpack(data[:headers[1].size])
data = data[headers[1].size:]
size = header[2]
elif length_desc == 127:
while len(data) < headers[2].size:
data += yield read(blocksize)
header = headers[2].unpack(data[:headers[2].size])
data = data[headers[2].size:]
size = header[2]
else:
header = headers[0].unpack(data[:headers[0].size])
data = data[headers[0].size:]
size = header[1] & 0x7f
# Read packet.
while len(data) < size:
data += yield read(blocksize)
packet, data = data[:size], data[size:]
if mask:
# Unmask data.
# TODO Is it possible to unmask the data using a builtin
# function?
if PY2:
maskingkey = bytearray(header[-1])
else:
maskingkey = header[-1]
packet = bytearray(packet)
for i in range(size):
packet[i] ^= maskingkey[i % 4]
packet = bytes(packet)
# Convert packet data if necessary.
if opcode & 0x7f == 1:
packet = packet.decode()
elif opcode & 0x7f == 2:
pass
elif opcode & 0x7f == 8:
# Close connection.
# FIXME Should I really send the close control frame?
self.socket.close()
raise socket_error(errno.ECONNRESET)
else:
raise RuntimeError('Unsupported opcode %x' % opcode)
event.succeed(packet)
except BaseException as e:
# FIXME Add proper error handling.
self._reader_proc.defused = True
if event is not None:
event.fail(e)
