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Diffstat (limited to 'examples/webchannel/standalone/websocketclientwrapper.py')
| -rw-r--r-- | examples/webchannel/standalone/websocketclientwrapper.py | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/examples/webchannel/standalone/websocketclientwrapper.py b/examples/webchannel/standalone/websocketclientwrapper.py new file mode 100644 index 000000000..24505b03b --- /dev/null +++ b/examples/webchannel/standalone/websocketclientwrapper.py @@ -0,0 +1,72 @@ +############################################################################# +## +## Copyright (C) 2017 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com> +## Copyright (C) 2020 The Qt Company Ltd. +## Contact: http://www.qt.io/licensing/ +## +## This file is part of the Qt for Python examples of the Qt Toolkit. +## +## $QT_BEGIN_LICENSE:BSD$ +## You may use this file under the terms of the BSD license as follows: +## +## "Redistribution and use in source and binary forms, with or without +## modification, are permitted provided that the following conditions are +## met: +## * Redistributions of source code must retain the above copyright +## notice, this list of conditions and the following disclaimer. +## * Redistributions in binary form must reproduce the above copyright +## notice, this list of conditions and the following disclaimer in +## the documentation and/or other materials provided with the +## distribution. +## * Neither the name of The Qt Company Ltd nor the names of its +## contributors may be used to endorse or promote products derived +## from this software without specific prior written permission. +## +## +## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +## +## $QT_END_LICENSE$ +## +############################################################################# + +from PySide2.QtCore import QObject, Signal, Slot + +from websockettransport import WebSocketTransport + + +class WebSocketClientWrapper(QObject): + """Wraps connected QWebSockets clients in WebSocketTransport objects. + + This code is all that is required to connect incoming WebSockets to + the WebChannel. Any kind of remote JavaScript client that supports + WebSockets can thus receive messages and access the published objects. + """ + clientConnected = Signal(WebSocketTransport) + + def __init__(self, server, parent=None): + """Construct the client wrapper with the given parent. All clients + connecting to the QWebSocketServer will be automatically wrapped + in WebSocketTransport objects.""" + super(WebSocketClientWrapper, self).__init__(parent) + self._server = server + self._server.newConnection.connect(self.handleNewConnection) + self._transports = [] + + @Slot() + def handleNewConnection(self): + """Wrap an incoming WebSocket connection in a WebSocketTransport + object.""" + socket = self._server.nextPendingConnection() + transport = WebSocketTransport(socket) + self._transports.append(transport) + self.clientConnected.emit(transport) |