def start(self):
if self.logger_name:
self.logger = logging.getLogger(self.logger_name) # noqa
else:
self.logger = logging.getLogger(self.__class__.__name__) # noqa
self.data = {"size_left": 0, "data": b""} # noqa
self.tcpSocket = QTcpSocket(self) # noqa
self.tcpSocket.setObjectName("qclient_socket")
QMetaObject.connectSlotsByName(self)
self.tcpSocket.setSocketOption(QAbstractSocket.KeepAliveOption, 1)
self.tcpSocket.connectToHost(QHostAddress(self.ip), self.port,
QIODevice.ReadWrite)
if not self.tcpSocket.waitForConnected(3000):
self.failed_to_connect.emit(self.ip, self.port)
self.tcpSocket.disconnectFromHost()
self.tcpSocket.close()
self.logger.error("Failed to connect to {}:{}".format(
self.ip, self.port))
return
self.close_signal.connect(self.close, Qt.BlockingQueuedConnection)
self.write_signal.connect(self._write)
self.connect_signal.connect(self._connectTo)
self.disconnect_signal.connect(self._disconnect)
self.reconnect_signal.connect(self._reconnect)
def __init__(self, *args, **kwargs):
super(Client, self).__init__(*args, **kwargs)
self.loginWidget = LoginWidget()
self.chatWidget = ChatWidget()
self.setCentralWidget(self.loginWidget)
self.socket = QTcpSocket()
self.setupConnections()
def run(self):
self.log.debug('Connection id={} is starting'.format(self.conn_id))
def wait_and_read(n_bytes):
"""
Convenience function that simplifies reading and checking for stop events, etc.
Returns a byte string of length n_bytes or None if socket needs to be closed.
"""
data = b""
while len(data) < n_bytes:
if sock.bytesAvailable() == 0:
new_data = sock.waitForReadyRead(100) # wait for 100ms between read attempts
if not new_data:
if sock.state() != sock.ConnectedState or self.need_to_stop():
return None
else:
continue
if self.need_to_stop():
return None
new_data = sock.read(n_bytes - len(data))
if type(new_data) != bytes:
new_data = new_data.data()
data += new_data
return data
sock = QTcpSocket(None)
sock.setSocketDescriptor(self.socketDescriptor)
sock.waitForConnected()
while True:
read_len = wait_and_read(4)
if not read_len:
break
read_len = struct.unpack(">L", read_len)[0]
data = wait_and_read(read_len)
if not data:
break
if data.startswith(self.internal_prefix):
self.handle_internal_command(data)
continue
try:
logDict = self.deserialize(data)
record = LogRecord(logDict)
except Exception:
self.log.error('Creating log record failed', exc_info=True)
continue
self.new_record.emit(record)
self.log.debug('Connection id={} is stopping'.format(self.conn_id))
sock.disconnectFromHost()
sock.close()
self.connection_finished.emit(self)
self.log.debug('Connection id={} has stopped'.format(self.conn_id))
def run(self) -> None:
"""Run socket manager."""
self._logger = logging.getLogger(self.__class__.__name__) # noqa
self.data = {"size_left": 0, "data": b""} # noqa
self.socket = QTcpSocket() # noqa
self.socket.setParent(None) # noqa
self.socket.setSocketOption(QAbstractSocket.KeepAliveOption, 1)
if self.socket.setSocketDescriptor(self.socket_descriptor): # noqa
self.socket.readyRead.connect(self.on_message) # noqa
self.socket.disconnected.connect(self.on_disconnected) # noqa
self.socket.error.connect(self.on_error) # noqa
self._logger.debug("CLIENT-{} connected to {}:{}".format(self.get_id(),
self.socket.peerAddress().toString(),
self.socket.peerPort()))
self.connected.emit(self.get_id(), self.socket.peerAddress().toString(), self.socket.peerPort())
self.close_signal.connect(self.close, Qt.BlockingQueuedConnection)
self.write.connect(self._write)
def on_connection(self, device_id: int, socket_descriptor: int):
"""Create new QTcpSocket object and setup connection with client.
Args:
device_id (int): Socket ID.
socket_descriptor (int) Socket descriptor.
Note:
Emits connected signal.
"""
socket = QTcpSocket()
socket.setParent(None) # noqa
if socket.setSocketDescriptor(socket_descriptor): # noqa
socket.readyRead.connect(lambda: self.on_message(socket)) # noqa
socket.disconnected.connect(lambda: self.on_disconnected(socket)) # noqa
socket.error.connect(lambda: self.on_error(socket)) # noqa
socket.setObjectName(str(device_id))
self.sockets.append(socket)
self.__logger.debug("New connection from CLIENT-{} "
"IP: {}:{}".format(socket.objectName(),
socket.peerAddress().toString(),
socket.peerPort()))
self.connected.emit(int(socket.objectName()), socket.peerAddress().toString(), socket.peerPort())