You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
678 lines
24 KiB
Python
678 lines
24 KiB
Python
import inspect
|
|
import selectors
|
|
import socket
|
|
import threading
|
|
import time
|
|
from typing import Any, Callable, Optional, Union
|
|
|
|
from . import _logging
|
|
from ._abnf import ABNF
|
|
from ._core import WebSocket, getdefaulttimeout
|
|
from ._exceptions import (
|
|
WebSocketConnectionClosedException,
|
|
WebSocketException,
|
|
WebSocketTimeoutException,
|
|
)
|
|
from ._ssl_compat import SSLEOFError
|
|
from ._url import parse_url
|
|
|
|
"""
|
|
_app.py
|
|
websocket - WebSocket client library for Python
|
|
|
|
Copyright 2024 engn33r
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
"""
|
|
|
|
__all__ = ["WebSocketApp"]
|
|
|
|
RECONNECT = 0
|
|
|
|
|
|
def setReconnect(reconnectInterval: int) -> None:
|
|
global RECONNECT
|
|
RECONNECT = reconnectInterval
|
|
|
|
|
|
class DispatcherBase:
|
|
"""
|
|
DispatcherBase
|
|
"""
|
|
|
|
def __init__(self, app: Any, ping_timeout: Union[float, int, None]) -> None:
|
|
self.app = app
|
|
self.ping_timeout = ping_timeout
|
|
|
|
def timeout(self, seconds: Union[float, int, None], callback: Callable) -> None:
|
|
time.sleep(seconds)
|
|
callback()
|
|
|
|
def reconnect(self, seconds: int, reconnector: Callable) -> None:
|
|
try:
|
|
_logging.info(
|
|
f"reconnect() - retrying in {seconds} seconds [{len(inspect.stack())} frames in stack]"
|
|
)
|
|
time.sleep(seconds)
|
|
reconnector(reconnecting=True)
|
|
except KeyboardInterrupt as e:
|
|
_logging.info(f"User exited {e}")
|
|
raise e
|
|
|
|
|
|
class Dispatcher(DispatcherBase):
|
|
"""
|
|
Dispatcher
|
|
"""
|
|
|
|
def read(
|
|
self,
|
|
sock: socket.socket,
|
|
read_callback: Callable,
|
|
check_callback: Callable,
|
|
) -> None:
|
|
sel = selectors.DefaultSelector()
|
|
sel.register(self.app.sock.sock, selectors.EVENT_READ)
|
|
try:
|
|
while self.app.keep_running:
|
|
if sel.select(self.ping_timeout):
|
|
if not read_callback():
|
|
break
|
|
check_callback()
|
|
finally:
|
|
sel.close()
|
|
|
|
|
|
class SSLDispatcher(DispatcherBase):
|
|
"""
|
|
SSLDispatcher
|
|
"""
|
|
|
|
def read(
|
|
self,
|
|
sock: socket.socket,
|
|
read_callback: Callable,
|
|
check_callback: Callable,
|
|
) -> None:
|
|
sock = self.app.sock.sock
|
|
sel = selectors.DefaultSelector()
|
|
sel.register(sock, selectors.EVENT_READ)
|
|
try:
|
|
while self.app.keep_running:
|
|
if self.select(sock, sel):
|
|
if not read_callback():
|
|
break
|
|
check_callback()
|
|
finally:
|
|
sel.close()
|
|
|
|
def select(self, sock, sel: selectors.DefaultSelector):
|
|
sock = self.app.sock.sock
|
|
if sock.pending():
|
|
return [
|
|
sock,
|
|
]
|
|
|
|
r = sel.select(self.ping_timeout)
|
|
|
|
if len(r) > 0:
|
|
return r[0][0]
|
|
|
|
|
|
class WrappedDispatcher:
|
|
"""
|
|
WrappedDispatcher
|
|
"""
|
|
|
|
def __init__(self, app, ping_timeout: Union[float, int, None], dispatcher) -> None:
|
|
self.app = app
|
|
self.ping_timeout = ping_timeout
|
|
self.dispatcher = dispatcher
|
|
dispatcher.signal(2, dispatcher.abort) # keyboard interrupt
|
|
|
|
def read(
|
|
self,
|
|
sock: socket.socket,
|
|
read_callback: Callable,
|
|
check_callback: Callable,
|
|
) -> None:
|
|
self.dispatcher.read(sock, read_callback)
|
|
self.ping_timeout and self.timeout(self.ping_timeout, check_callback)
|
|
|
|
def timeout(self, seconds: float, callback: Callable) -> None:
|
|
self.dispatcher.timeout(seconds, callback)
|
|
|
|
def reconnect(self, seconds: int, reconnector: Callable) -> None:
|
|
self.timeout(seconds, reconnector)
|
|
|
|
|
|
class WebSocketApp:
|
|
"""
|
|
Higher level of APIs are provided. The interface is like JavaScript WebSocket object.
|
|
"""
|
|
|
|
def __init__(
|
|
self,
|
|
url: str,
|
|
header: Union[list, dict, Callable, None] = None,
|
|
on_open: Optional[Callable[[WebSocket], None]] = None,
|
|
on_reconnect: Optional[Callable[[WebSocket], None]] = None,
|
|
on_message: Optional[Callable[[WebSocket, Any], None]] = None,
|
|
on_error: Optional[Callable[[WebSocket, Any], None]] = None,
|
|
on_close: Optional[Callable[[WebSocket, Any, Any], None]] = None,
|
|
on_ping: Optional[Callable] = None,
|
|
on_pong: Optional[Callable] = None,
|
|
on_cont_message: Optional[Callable] = None,
|
|
keep_running: bool = True,
|
|
get_mask_key: Optional[Callable] = None,
|
|
cookie: Optional[str] = None,
|
|
subprotocols: Optional[list] = None,
|
|
on_data: Optional[Callable] = None,
|
|
socket: Optional[socket.socket] = None,
|
|
) -> None:
|
|
"""
|
|
WebSocketApp initialization
|
|
|
|
Parameters
|
|
----------
|
|
url: str
|
|
Websocket url.
|
|
header: list or dict or Callable
|
|
Custom header for websocket handshake.
|
|
If the parameter is a callable object, it is called just before the connection attempt.
|
|
The returned dict or list is used as custom header value.
|
|
This could be useful in order to properly setup timestamp dependent headers.
|
|
on_open: function
|
|
Callback object which is called at opening websocket.
|
|
on_open has one argument.
|
|
The 1st argument is this class object.
|
|
on_reconnect: function
|
|
Callback object which is called at reconnecting websocket.
|
|
on_reconnect has one argument.
|
|
The 1st argument is this class object.
|
|
on_message: function
|
|
Callback object which is called when received data.
|
|
on_message has 2 arguments.
|
|
The 1st argument is this class object.
|
|
The 2nd argument is utf-8 data received from the server.
|
|
on_error: function
|
|
Callback object which is called when we get error.
|
|
on_error has 2 arguments.
|
|
The 1st argument is this class object.
|
|
The 2nd argument is exception object.
|
|
on_close: function
|
|
Callback object which is called when connection is closed.
|
|
on_close has 3 arguments.
|
|
The 1st argument is this class object.
|
|
The 2nd argument is close_status_code.
|
|
The 3rd argument is close_msg.
|
|
on_cont_message: function
|
|
Callback object which is called when a continuation
|
|
frame is received.
|
|
on_cont_message has 3 arguments.
|
|
The 1st argument is this class object.
|
|
The 2nd argument is utf-8 string which we get from the server.
|
|
The 3rd argument is continue flag. if 0, the data continue
|
|
to next frame data
|
|
on_data: function
|
|
Callback object which is called when a message received.
|
|
This is called before on_message or on_cont_message,
|
|
and then on_message or on_cont_message is called.
|
|
on_data has 4 argument.
|
|
The 1st argument is this class object.
|
|
The 2nd argument is utf-8 string which we get from the server.
|
|
The 3rd argument is data type. ABNF.OPCODE_TEXT or ABNF.OPCODE_BINARY will be came.
|
|
The 4th argument is continue flag. If 0, the data continue
|
|
keep_running: bool
|
|
This parameter is obsolete and ignored.
|
|
get_mask_key: function
|
|
A callable function to get new mask keys, see the
|
|
WebSocket.set_mask_key's docstring for more information.
|
|
cookie: str
|
|
Cookie value.
|
|
subprotocols: list
|
|
List of available sub protocols. Default is None.
|
|
socket: socket
|
|
Pre-initialized stream socket.
|
|
"""
|
|
self.url = url
|
|
self.header = header if header is not None else []
|
|
self.cookie = cookie
|
|
|
|
self.on_open = on_open
|
|
self.on_reconnect = on_reconnect
|
|
self.on_message = on_message
|
|
self.on_data = on_data
|
|
self.on_error = on_error
|
|
self.on_close = on_close
|
|
self.on_ping = on_ping
|
|
self.on_pong = on_pong
|
|
self.on_cont_message = on_cont_message
|
|
self.keep_running = False
|
|
self.get_mask_key = get_mask_key
|
|
self.sock: Optional[WebSocket] = None
|
|
self.last_ping_tm = float(0)
|
|
self.last_pong_tm = float(0)
|
|
self.ping_thread: Optional[threading.Thread] = None
|
|
self.stop_ping: Optional[threading.Event] = None
|
|
self.ping_interval = float(0)
|
|
self.ping_timeout: Union[float, int, None] = None
|
|
self.ping_payload = ""
|
|
self.subprotocols = subprotocols
|
|
self.prepared_socket = socket
|
|
self.has_errored = False
|
|
self.has_done_teardown = False
|
|
self.has_done_teardown_lock = threading.Lock()
|
|
|
|
def send(self, data: Union[bytes, str], opcode: int = ABNF.OPCODE_TEXT) -> None:
|
|
"""
|
|
send message
|
|
|
|
Parameters
|
|
----------
|
|
data: str
|
|
Message to send. If you set opcode to OPCODE_TEXT,
|
|
data must be utf-8 string or unicode.
|
|
opcode: int
|
|
Operation code of data. Default is OPCODE_TEXT.
|
|
"""
|
|
|
|
if not self.sock or self.sock.send(data, opcode) == 0:
|
|
raise WebSocketConnectionClosedException("Connection is already closed.")
|
|
|
|
def send_text(self, text_data: str) -> None:
|
|
"""
|
|
Sends UTF-8 encoded text.
|
|
"""
|
|
if not self.sock or self.sock.send(text_data, ABNF.OPCODE_TEXT) == 0:
|
|
raise WebSocketConnectionClosedException("Connection is already closed.")
|
|
|
|
def send_bytes(self, data: Union[bytes, bytearray]) -> None:
|
|
"""
|
|
Sends a sequence of bytes.
|
|
"""
|
|
if not self.sock or self.sock.send(data, ABNF.OPCODE_BINARY) == 0:
|
|
raise WebSocketConnectionClosedException("Connection is already closed.")
|
|
|
|
def close(self, **kwargs) -> None:
|
|
"""
|
|
Close websocket connection.
|
|
"""
|
|
self.keep_running = False
|
|
if self.sock:
|
|
self.sock.close(**kwargs)
|
|
self.sock = None
|
|
|
|
def _start_ping_thread(self) -> None:
|
|
self.last_ping_tm = self.last_pong_tm = float(0)
|
|
self.stop_ping = threading.Event()
|
|
self.ping_thread = threading.Thread(target=self._send_ping)
|
|
self.ping_thread.daemon = True
|
|
self.ping_thread.start()
|
|
|
|
def _stop_ping_thread(self) -> None:
|
|
if self.stop_ping:
|
|
self.stop_ping.set()
|
|
if self.ping_thread and self.ping_thread.is_alive():
|
|
self.ping_thread.join(3)
|
|
self.last_ping_tm = self.last_pong_tm = float(0)
|
|
|
|
def _send_ping(self) -> None:
|
|
if self.stop_ping.wait(self.ping_interval) or self.keep_running is False:
|
|
return
|
|
while not self.stop_ping.wait(self.ping_interval) and self.keep_running is True:
|
|
if self.sock:
|
|
self.last_ping_tm = time.time()
|
|
try:
|
|
_logging.debug("Sending ping")
|
|
self.sock.ping(self.ping_payload)
|
|
except Exception as e:
|
|
_logging.debug(f"Failed to send ping: {e}")
|
|
|
|
def run_forever(
|
|
self,
|
|
sockopt: tuple = None,
|
|
sslopt: dict = None,
|
|
ping_interval: Union[float, int] = 0,
|
|
ping_timeout: Union[float, int, None] = None,
|
|
ping_payload: str = "",
|
|
http_proxy_host: str = None,
|
|
http_proxy_port: Union[int, str] = None,
|
|
http_no_proxy: list = None,
|
|
http_proxy_auth: tuple = None,
|
|
http_proxy_timeout: Optional[float] = None,
|
|
skip_utf8_validation: bool = False,
|
|
host: str = None,
|
|
origin: str = None,
|
|
dispatcher=None,
|
|
suppress_origin: bool = False,
|
|
proxy_type: str = None,
|
|
reconnect: int = None,
|
|
) -> bool:
|
|
"""
|
|
Run event loop for WebSocket framework.
|
|
|
|
This loop is an infinite loop and is alive while websocket is available.
|
|
|
|
Parameters
|
|
----------
|
|
sockopt: tuple
|
|
Values for socket.setsockopt.
|
|
sockopt must be tuple
|
|
and each element is argument of sock.setsockopt.
|
|
sslopt: dict
|
|
Optional dict object for ssl socket option.
|
|
ping_interval: int or float
|
|
Automatically send "ping" command
|
|
every specified period (in seconds).
|
|
If set to 0, no ping is sent periodically.
|
|
ping_timeout: int or float
|
|
Timeout (in seconds) if the pong message is not received.
|
|
ping_payload: str
|
|
Payload message to send with each ping.
|
|
http_proxy_host: str
|
|
HTTP proxy host name.
|
|
http_proxy_port: int or str
|
|
HTTP proxy port. If not set, set to 80.
|
|
http_no_proxy: list
|
|
Whitelisted host names that don't use the proxy.
|
|
http_proxy_timeout: int or float
|
|
HTTP proxy timeout, default is 60 sec as per python-socks.
|
|
http_proxy_auth: tuple
|
|
HTTP proxy auth information. tuple of username and password. Default is None.
|
|
skip_utf8_validation: bool
|
|
skip utf8 validation.
|
|
host: str
|
|
update host header.
|
|
origin: str
|
|
update origin header.
|
|
dispatcher: Dispatcher object
|
|
customize reading data from socket.
|
|
suppress_origin: bool
|
|
suppress outputting origin header.
|
|
proxy_type: str
|
|
type of proxy from: http, socks4, socks4a, socks5, socks5h
|
|
reconnect: int
|
|
delay interval when reconnecting
|
|
|
|
Returns
|
|
-------
|
|
teardown: bool
|
|
False if the `WebSocketApp` is closed or caught KeyboardInterrupt,
|
|
True if any other exception was raised during a loop.
|
|
"""
|
|
|
|
if reconnect is None:
|
|
reconnect = RECONNECT
|
|
|
|
if ping_timeout is not None and ping_timeout <= 0:
|
|
raise WebSocketException("Ensure ping_timeout > 0")
|
|
if ping_interval is not None and ping_interval < 0:
|
|
raise WebSocketException("Ensure ping_interval >= 0")
|
|
if ping_timeout and ping_interval and ping_interval <= ping_timeout:
|
|
raise WebSocketException("Ensure ping_interval > ping_timeout")
|
|
if not sockopt:
|
|
sockopt = ()
|
|
if not sslopt:
|
|
sslopt = {}
|
|
if self.sock:
|
|
raise WebSocketException("socket is already opened")
|
|
|
|
self.ping_interval = ping_interval
|
|
self.ping_timeout = ping_timeout
|
|
self.ping_payload = ping_payload
|
|
self.has_done_teardown = False
|
|
self.keep_running = True
|
|
|
|
def teardown(close_frame: ABNF = None):
|
|
"""
|
|
Tears down the connection.
|
|
|
|
Parameters
|
|
----------
|
|
close_frame: ABNF frame
|
|
If close_frame is set, the on_close handler is invoked
|
|
with the statusCode and reason from the provided frame.
|
|
"""
|
|
|
|
# teardown() is called in many code paths to ensure resources are cleaned up and on_close is fired.
|
|
# To ensure the work is only done once, we use this bool and lock.
|
|
with self.has_done_teardown_lock:
|
|
if self.has_done_teardown:
|
|
return
|
|
self.has_done_teardown = True
|
|
|
|
self._stop_ping_thread()
|
|
self.keep_running = False
|
|
if self.sock:
|
|
self.sock.close()
|
|
close_status_code, close_reason = self._get_close_args(
|
|
close_frame if close_frame else None
|
|
)
|
|
self.sock = None
|
|
|
|
# Finally call the callback AFTER all teardown is complete
|
|
self._callback(self.on_close, close_status_code, close_reason)
|
|
|
|
def setSock(reconnecting: bool = False) -> None:
|
|
if reconnecting and self.sock:
|
|
self.sock.shutdown()
|
|
|
|
self.sock = WebSocket(
|
|
self.get_mask_key,
|
|
sockopt=sockopt,
|
|
sslopt=sslopt,
|
|
fire_cont_frame=self.on_cont_message is not None,
|
|
skip_utf8_validation=skip_utf8_validation,
|
|
enable_multithread=True,
|
|
)
|
|
|
|
self.sock.settimeout(getdefaulttimeout())
|
|
try:
|
|
header = self.header() if callable(self.header) else self.header
|
|
|
|
self.sock.connect(
|
|
self.url,
|
|
header=header,
|
|
cookie=self.cookie,
|
|
http_proxy_host=http_proxy_host,
|
|
http_proxy_port=http_proxy_port,
|
|
http_no_proxy=http_no_proxy,
|
|
http_proxy_auth=http_proxy_auth,
|
|
http_proxy_timeout=http_proxy_timeout,
|
|
subprotocols=self.subprotocols,
|
|
host=host,
|
|
origin=origin,
|
|
suppress_origin=suppress_origin,
|
|
proxy_type=proxy_type,
|
|
socket=self.prepared_socket,
|
|
)
|
|
|
|
_logging.info("Websocket connected")
|
|
|
|
if self.ping_interval:
|
|
self._start_ping_thread()
|
|
|
|
if reconnecting and self.on_reconnect:
|
|
self._callback(self.on_reconnect)
|
|
else:
|
|
self._callback(self.on_open)
|
|
|
|
dispatcher.read(self.sock.sock, read, check)
|
|
except (
|
|
WebSocketConnectionClosedException,
|
|
ConnectionRefusedError,
|
|
KeyboardInterrupt,
|
|
SystemExit,
|
|
Exception,
|
|
) as e:
|
|
handleDisconnect(e, reconnecting)
|
|
|
|
def read() -> bool:
|
|
if not self.keep_running:
|
|
return teardown()
|
|
|
|
try:
|
|
op_code, frame = self.sock.recv_data_frame(True)
|
|
except (
|
|
WebSocketConnectionClosedException,
|
|
KeyboardInterrupt,
|
|
SSLEOFError,
|
|
) as e:
|
|
if custom_dispatcher:
|
|
return handleDisconnect(e, bool(reconnect))
|
|
else:
|
|
raise e
|
|
|
|
if op_code == ABNF.OPCODE_CLOSE:
|
|
return teardown(frame)
|
|
elif op_code == ABNF.OPCODE_PING:
|
|
self._callback(self.on_ping, frame.data)
|
|
elif op_code == ABNF.OPCODE_PONG:
|
|
self.last_pong_tm = time.time()
|
|
self._callback(self.on_pong, frame.data)
|
|
elif op_code == ABNF.OPCODE_CONT and self.on_cont_message:
|
|
self._callback(self.on_data, frame.data, frame.opcode, frame.fin)
|
|
self._callback(self.on_cont_message, frame.data, frame.fin)
|
|
else:
|
|
data = frame.data
|
|
if op_code == ABNF.OPCODE_TEXT and not skip_utf8_validation:
|
|
data = data.decode("utf-8")
|
|
self._callback(self.on_data, data, frame.opcode, True)
|
|
self._callback(self.on_message, data)
|
|
|
|
return True
|
|
|
|
def check() -> bool:
|
|
if self.ping_timeout:
|
|
has_timeout_expired = (
|
|
time.time() - self.last_ping_tm > self.ping_timeout
|
|
)
|
|
has_pong_not_arrived_after_last_ping = (
|
|
self.last_pong_tm - self.last_ping_tm < 0
|
|
)
|
|
has_pong_arrived_too_late = (
|
|
self.last_pong_tm - self.last_ping_tm > self.ping_timeout
|
|
)
|
|
|
|
if (
|
|
self.last_ping_tm
|
|
and has_timeout_expired
|
|
and (
|
|
has_pong_not_arrived_after_last_ping
|
|
or has_pong_arrived_too_late
|
|
)
|
|
):
|
|
raise WebSocketTimeoutException("ping/pong timed out")
|
|
return True
|
|
|
|
def handleDisconnect(
|
|
e: Union[
|
|
WebSocketConnectionClosedException,
|
|
ConnectionRefusedError,
|
|
KeyboardInterrupt,
|
|
SystemExit,
|
|
Exception,
|
|
],
|
|
reconnecting: bool = False,
|
|
) -> bool:
|
|
self.has_errored = True
|
|
self._stop_ping_thread()
|
|
if not reconnecting:
|
|
self._callback(self.on_error, e)
|
|
|
|
if isinstance(e, (KeyboardInterrupt, SystemExit)):
|
|
teardown()
|
|
# Propagate further
|
|
raise
|
|
|
|
if reconnect:
|
|
_logging.info(f"{e} - reconnect")
|
|
if custom_dispatcher:
|
|
_logging.debug(
|
|
f"Calling custom dispatcher reconnect [{len(inspect.stack())} frames in stack]"
|
|
)
|
|
dispatcher.reconnect(reconnect, setSock)
|
|
else:
|
|
_logging.error(f"{e} - goodbye")
|
|
teardown()
|
|
|
|
custom_dispatcher = bool(dispatcher)
|
|
dispatcher = self.create_dispatcher(
|
|
ping_timeout, dispatcher, parse_url(self.url)[3]
|
|
)
|
|
|
|
try:
|
|
setSock()
|
|
if not custom_dispatcher and reconnect:
|
|
while self.keep_running:
|
|
_logging.debug(
|
|
f"Calling dispatcher reconnect [{len(inspect.stack())} frames in stack]"
|
|
)
|
|
dispatcher.reconnect(reconnect, setSock)
|
|
except (KeyboardInterrupt, Exception) as e:
|
|
_logging.info(f"tearing down on exception {e}")
|
|
teardown()
|
|
finally:
|
|
if not custom_dispatcher:
|
|
# Ensure teardown was called before returning from run_forever
|
|
teardown()
|
|
|
|
return self.has_errored
|
|
|
|
def create_dispatcher(
|
|
self,
|
|
ping_timeout: Union[float, int, None],
|
|
dispatcher: Optional[DispatcherBase] = None,
|
|
is_ssl: bool = False,
|
|
) -> Union[Dispatcher, SSLDispatcher, WrappedDispatcher]:
|
|
if dispatcher: # If custom dispatcher is set, use WrappedDispatcher
|
|
return WrappedDispatcher(self, ping_timeout, dispatcher)
|
|
timeout = ping_timeout or 10
|
|
if is_ssl:
|
|
return SSLDispatcher(self, timeout)
|
|
return Dispatcher(self, timeout)
|
|
|
|
def _get_close_args(self, close_frame: ABNF) -> list:
|
|
"""
|
|
_get_close_args extracts the close code and reason from the close body
|
|
if it exists (RFC6455 says WebSocket Connection Close Code is optional)
|
|
"""
|
|
# Need to catch the case where close_frame is None
|
|
# Otherwise the following if statement causes an error
|
|
if not self.on_close or not close_frame:
|
|
return [None, None]
|
|
|
|
# Extract close frame status code
|
|
if close_frame.data and len(close_frame.data) >= 2:
|
|
close_status_code = 256 * int(close_frame.data[0]) + int(
|
|
close_frame.data[1]
|
|
)
|
|
reason = close_frame.data[2:]
|
|
if isinstance(reason, bytes):
|
|
reason = reason.decode("utf-8")
|
|
return [close_status_code, reason]
|
|
else:
|
|
# Most likely reached this because len(close_frame_data.data) < 2
|
|
return [None, None]
|
|
|
|
def _callback(self, callback, *args) -> None:
|
|
if callback:
|
|
try:
|
|
callback(self, *args)
|
|
|
|
except Exception as e:
|
|
_logging.error(f"error from callback {callback}: {e}")
|
|
if self.on_error:
|
|
self.on_error(self, e)
|