def __init__(self, io_loop, request, on_message_callback=None,
compression_options=None):
self.compression_options = compression_options
self.connect_future = TracebackFuture()
self.protocol = None
self.read_future = None
self.read_queue = collections.deque()
self.key = base64.b64encode(os.urandom(16))
self._on_message_callback = on_message_callback
self.close_code = self.close_reason = None
scheme, sep, rest = request.url.partition(':')
scheme = {'ws': 'http', 'wss': 'https'}[scheme]
request.url = scheme + sep + rest
request.headers.update({
'Upgrade': 'websocket',
'Connection': 'Upgrade',
'Sec-WebSocket-Key': self.key,
'Sec-WebSocket-Version': '13',
})
if self.compression_options is not None:
# Always offer to let the server set our max_wbits (and even though
# we don't offer it, we will accept a client_no_context_takeover
# from the server).
# TODO: set server parameters for deflate extension
# if requested in self.compression_options.
request.headers['Sec-WebSocket-Extensions'] = (
'permessage-deflate; client_max_window_bits')
self.tcp_client = TCPClient(io_loop=io_loop)
super(WebSocketClientConnection, self).__init__(
io_loop, None, request, lambda: None, self._on_http_response,
104857600, self.tcp_client, 65536, 104857600)
python类TracebackFuture()的实例源码
def start_tls(self, server_side, ssl_options, server_hostname=None):
if not isinstance(ssl_options, SSL.Context):
raise ValueError("ssl_options is not SSL.Context")
_socket = self.detach()
_socket = SSL.Connection(ssl_options, _socket)
if server_side:
_socket.set_accept_state()
else:
_socket.set_connect_state()
if server_hostname:
_socket.set_tlsext_host_name(server_hostname.encode("idna"))
orig_close_callback = self._close_callback
self._close_callback = None
future = TracebackFuture()
ssl_stream = MicroProxySSLIOStream(_socket,
server_hostname=server_hostname,
ssl_options=ssl_options,
io_loop=self.io_loop)
def close_callback():
if not future.done():
future.set_exception(ssl_stream.error or StreamClosedError())
if orig_close_callback is not None:
orig_close_callback()
ssl_stream.set_close_callback(close_callback)
ssl_stream._ssl_connect_callback = lambda: future.set_result(ssl_stream)
ssl_stream.max_buffer_size = self.max_buffer_size
ssl_stream.read_chunk_size = self.read_chunk_size
return future
def _set_read_callback(self, callback):
assert self._read_callback is None, "Already reading"
assert self._read_future is None, "Already reading"
if callback is not None:
self._read_callback = stack_context.wrap(callback)
else:
self._read_future = TracebackFuture()
return self._read_future
def wait_for_handshake(self, callback=None):
"""Wait for the initial SSL handshake to complete.
If a ``callback`` is given, it will be called with no
arguments once the handshake is complete; otherwise this
method returns a `.Future` which will resolve to the
stream itself after the handshake is complete.
Once the handshake is complete, information such as
the peer's certificate and NPN/ALPN selections may be
accessed on ``self.socket``.
This method is intended for use on server-side streams
or after using `IOStream.start_tls`; it should not be used
with `IOStream.connect` (which already waits for the
handshake to complete). It may only be called once per stream.
.. versionadded:: 4.2
"""
if (self._ssl_connect_callback is not None or
self._ssl_connect_future is not None):
raise RuntimeError("Already waiting")
if callback is not None:
self._ssl_connect_callback = stack_context.wrap(callback)
future = None
else:
future = self._ssl_connect_future = TracebackFuture()
if not self._ssl_accepting:
self._run_ssl_connect_callback()
return future
def _auth_return_future(f):
"""Similar to tornado.concurrent.return_future, but uses the auth
module's legacy callback interface.
Note that when using this decorator the ``callback`` parameter
inside the function will actually be a future.
"""
replacer = ArgReplacer(f, 'callback')
@functools.wraps(f)
def wrapper(*args, **kwargs):
future = TracebackFuture()
callback, args, kwargs = replacer.replace(future, args, kwargs)
if callback is not None:
future.add_done_callback(
functools.partial(_auth_future_to_callback, callback))
def handle_exception(typ, value, tb):
if future.done():
return False
else:
future.set_exc_info((typ, value, tb))
return True
with ExceptionStackContext(handle_exception):
f(*args, **kwargs)
return future
return wrapper
def next(self):
"""Returns a `.Future` that will yield the next available result.
Note that this `.Future` will not be the same object as any of
the inputs.
"""
self._running_future = TracebackFuture()
if self._finished:
self._return_result(self._finished.popleft())
return self._running_future
def handle_exception(self, typ, value, tb):
if not self.running and not self.finished:
self.future = TracebackFuture()
self.future.set_exc_info((typ, value, tb))
self.run()
return True
else:
return False
websocket.py 文件源码
项目：My-Web-Server-Framework-With-Python2.7
作者: syjsu
项目源码
文件源码
阅读 22
收藏 0
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def __init__(self, io_loop, request, on_message_callback=None,
compression_options=None):
self.compression_options = compression_options
self.connect_future = TracebackFuture()
self.protocol = None
self.read_future = None
self.read_queue = collections.deque()
self.key = base64.b64encode(os.urandom(16))
self._on_message_callback = on_message_callback
self.close_code = self.close_reason = None
scheme, sep, rest = request.url.partition(':')
scheme = {'ws': 'http', 'wss': 'https'}[scheme]
request.url = scheme + sep + rest
request.headers.update({
'Upgrade': 'websocket',
'Connection': 'Upgrade',
'Sec-WebSocket-Key': self.key,
'Sec-WebSocket-Version': '13',
})
if self.compression_options is not None:
# Always offer to let the server set our max_wbits (and even though
# we don't offer it, we will accept a client_no_context_takeover
# from the server).
# TODO: set server parameters for deflate extension
# if requested in self.compression_options.
request.headers['Sec-WebSocket-Extensions'] = (
'permessage-deflate; client_max_window_bits')
self.tcp_client = TCPClient(io_loop=io_loop)
super(WebSocketClientConnection, self).__init__(
io_loop, None, request, lambda: None, self._on_http_response,
104857600, self.tcp_client, 65536, 104857600)
def _set_read_callback(self, callback):
assert self._read_callback is None, "Already reading"
assert self._read_future is None, "Already reading"
if callback is not None:
self._read_callback = stack_context.wrap(callback)
else:
self._read_future = TracebackFuture()
return self._read_future
def wait_for_handshake(self, callback=None):
"""Wait for the initial SSL handshake to complete.
If a ``callback`` is given, it will be called with no
arguments once the handshake is complete; otherwise this
method returns a `.Future` which will resolve to the
stream itself after the handshake is complete.
Once the handshake is complete, information such as
the peer's certificate and NPN/ALPN selections may be
accessed on ``self.socket``.
This method is intended for use on server-side streams
or after using `IOStream.start_tls`; it should not be used
with `IOStream.connect` (which already waits for the
handshake to complete). It may only be called once per stream.
.. versionadded:: 4.2
"""
if (self._ssl_connect_callback is not None or
self._ssl_connect_future is not None):
raise RuntimeError("Already waiting")
if callback is not None:
self._ssl_connect_callback = stack_context.wrap(callback)
future = None
else:
future = self._ssl_connect_future = TracebackFuture()
if not self._ssl_accepting:
self._run_ssl_connect_callback()
return future
def _auth_return_future(f):
"""Similar to tornado.concurrent.return_future, but uses the auth
module's legacy callback interface.
Note that when using this decorator the ``callback`` parameter
inside the function will actually be a future.
"""
replacer = ArgReplacer(f, 'callback')
@functools.wraps(f)
def wrapper(*args, **kwargs):
future = TracebackFuture()
callback, args, kwargs = replacer.replace(future, args, kwargs)
if callback is not None:
future.add_done_callback(
functools.partial(_auth_future_to_callback, callback))
def handle_exception(typ, value, tb):
if future.done():
return False
else:
future.set_exc_info((typ, value, tb))
return True
with ExceptionStackContext(handle_exception):
f(*args, **kwargs)
return future
return wrapper
def next(self):
"""Returns a `.Future` that will yield the next available result.
Note that this `.Future` will not be the same object as any of
the inputs.
"""
self._running_future = TracebackFuture()
if self._finished:
self._return_result(self._finished.popleft())
return self._running_future
def handle_exception(self, typ, value, tb):
if not self.running and not self.finished:
self.future = TracebackFuture()
self.future.set_exc_info((typ, value, tb))
self.run()
return True
else:
return False
def __init__(self, io_loop, request, on_message_callback=None,
compression_options=None):
self.compression_options = compression_options
self.connect_future = TracebackFuture()
self.protocol = None
self.read_future = None
self.read_queue = collections.deque()
self.key = base64.b64encode(os.urandom(16))
self._on_message_callback = on_message_callback
self.close_code = self.close_reason = None
scheme, sep, rest = request.url.partition(':')
scheme = {'ws': 'http', 'wss': 'https'}[scheme]
request.url = scheme + sep + rest
request.headers.update({
'Upgrade': 'websocket',
'Connection': 'Upgrade',
'Sec-WebSocket-Key': self.key,
'Sec-WebSocket-Version': '13',
})
if self.compression_options is not None:
# Always offer to let the server set our max_wbits (and even though
# we don't offer it, we will accept a client_no_context_takeover
# from the server).
# TODO: set server parameters for deflate extension
# if requested in self.compression_options.
request.headers['Sec-WebSocket-Extensions'] = (
'permessage-deflate; client_max_window_bits')
self.tcp_client = TCPClient(io_loop=io_loop)
super(WebSocketClientConnection, self).__init__(
io_loop, None, request, lambda: None, self._on_http_response,
104857600, self.tcp_client, 65536, 104857600)
def _set_read_callback(self, callback):
assert self._read_callback is None, "Already reading"
assert self._read_future is None, "Already reading"
if callback is not None:
self._read_callback = stack_context.wrap(callback)
else:
self._read_future = TracebackFuture()
return self._read_future
def wait_for_handshake(self, callback=None):
"""Wait for the initial SSL handshake to complete.
If a ``callback`` is given, it will be called with no
arguments once the handshake is complete; otherwise this
method returns a `.Future` which will resolve to the
stream itself after the handshake is complete.
Once the handshake is complete, information such as
the peer's certificate and NPN/ALPN selections may be
accessed on ``self.socket``.
This method is intended for use on server-side streams
or after using `IOStream.start_tls`; it should not be used
with `IOStream.connect` (which already waits for the
handshake to complete). It may only be called once per stream.
.. versionadded:: 4.2
"""
if (self._ssl_connect_callback is not None or
self._ssl_connect_future is not None):
raise RuntimeError("Already waiting")
if callback is not None:
self._ssl_connect_callback = stack_context.wrap(callback)
future = None
else:
future = self._ssl_connect_future = TracebackFuture()
if not self._ssl_accepting:
self._run_ssl_connect_callback()
return future
def _auth_return_future(f):
"""Similar to tornado.concurrent.return_future, but uses the auth
module's legacy callback interface.
Note that when using this decorator the ``callback`` parameter
inside the function will actually be a future.
"""
replacer = ArgReplacer(f, 'callback')
@functools.wraps(f)
def wrapper(*args, **kwargs):
future = TracebackFuture()
callback, args, kwargs = replacer.replace(future, args, kwargs)
if callback is not None:
future.add_done_callback(
functools.partial(_auth_future_to_callback, callback))
def handle_exception(typ, value, tb):
if future.done():
return False
else:
future.set_exc_info((typ, value, tb))
return True
with ExceptionStackContext(handle_exception):
f(*args, **kwargs)
return future
return wrapper
def next(self):
"""Returns a `.Future` that will yield the next available result.
Note that this `.Future` will not be the same object as any of
the inputs.
"""
self._running_future = TracebackFuture()
if self._finished:
self._return_result(self._finished.popleft())
return self._running_future
def handle_exception(self, typ, value, tb):
if not self.running and not self.finished:
self.future = TracebackFuture()
self.future.set_exc_info((typ, value, tb))
self.run()
return True
else:
return False
def __init__(self, io_loop, request, on_message_callback=None,
compression_options=None):
self.compression_options = compression_options
self.connect_future = TracebackFuture()
self.protocol = None
self.read_future = None
self.read_queue = collections.deque()
self.key = base64.b64encode(os.urandom(16))
self._on_message_callback = on_message_callback
self.close_code = self.close_reason = None
scheme, sep, rest = request.url.partition(':')
scheme = {'ws': 'http', 'wss': 'https'}[scheme]
request.url = scheme + sep + rest
request.headers.update({
'Upgrade': 'websocket',
'Connection': 'Upgrade',
'Sec-WebSocket-Key': self.key,
'Sec-WebSocket-Version': '13',
})
if self.compression_options is not None:
# Always offer to let the server set our max_wbits (and even though
# we don't offer it, we will accept a client_no_context_takeover
# from the server).
# TODO: set server parameters for deflate extension
# if requested in self.compression_options.
request.headers['Sec-WebSocket-Extensions'] = (
'permessage-deflate; client_max_window_bits')
self.tcp_client = TCPClient(io_loop=io_loop)
super(WebSocketClientConnection, self).__init__(
io_loop, None, request, lambda: None, self._on_http_response,
104857600, self.tcp_client, 65536, 104857600)
