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Diffstat (limited to 'examples/network/fortuneserver.py')
| -rwxr-xr-x | examples/network/fortuneserver.py | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/examples/network/fortuneserver.py b/examples/network/fortuneserver.py new file mode 100755 index 000000000..1c08f6e82 --- /dev/null +++ b/examples/network/fortuneserver.py @@ -0,0 +1,125 @@ +#!/usr/bin/env python + +############################################################################# +## +## Copyright (C) 2013 Riverbank Computing Limited. +## Copyright (C) 2016 The Qt Company Ltd. +## Contact: http://www.qt.io/licensing/ +## +## This file is part of the PySide 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." +## +## $QT_END_LICENSE$ +## +############################################################################# + +"""PySide2 port of the network/fortuneserver example from Qt v5.x""" + +import random + +from PySide2 import QtCore, QtGui, QtWidgets, QtNetwork + + +class Server(QtWidgets.QDialog): + def __init__(self, parent=None): + super(Server, self).__init__(parent) + + statusLabel = QtWidgets.QLabel() + quitButton = QtWidgets.QPushButton("Quit") + quitButton.setAutoDefault(False) + + self.tcpServer = QtNetwork.QTcpServer(self) + if not self.tcpServer.listen(): + QtWidgets.QMessageBox.critical(self, "Fortune Server", + "Unable to start the server: %s." % self.tcpServer.errorString()) + self.close() + return + + statusLabel.setText("The server is running on port %d.\nRun the " + "Fortune Client example now." % self.tcpServer.serverPort()) + + self.fortunes = ( + "You've been leading a dog's life. Stay off the furniture.", + "You've got to think about tomorrow.", + "You will be surprised by a loud noise.", + "You will feel hungry again in another hour.", + "You might have mail.", + "You cannot kill time without injuring eternity.", + "Computers are not intelligent. They only think they are.") + + quitButton.clicked.connect(self.close) + self.tcpServer.newConnection.connect(self.sendFortune) + + buttonLayout = QtWidgets.QHBoxLayout() + buttonLayout.addStretch(1) + buttonLayout.addWidget(quitButton) + buttonLayout.addStretch(1) + + mainLayout = QtWidgets.QVBoxLayout() + mainLayout.addWidget(statusLabel) + mainLayout.addLayout(buttonLayout) + self.setLayout(mainLayout) + + self.setWindowTitle("Fortune Server") + + def sendFortune(self): + block = QtCore.QByteArray() + out = QtCore.QDataStream(block, QtCore.QIODevice.WriteOnly) + out.setVersion(QtCore.QDataStream.Qt_4_0) + out.writeUInt16(0) + fortune = self.fortunes[random.randint(0, len(self.fortunes) - 1)] + + try: + # Python v3. + fortune = bytes(fortune, encoding='ascii') + except: + # Python v2. + pass + + out.writeString(fortune) + out.device().seek(0) + out.writeUInt16(block.size() - 2) + + clientConnection = self.tcpServer.nextPendingConnection() + clientConnection.disconnected.connect(clientConnection.deleteLater) + + clientConnection.write(block) + clientConnection.disconnectFromHost() + + +if __name__ == '__main__': + + import sys + + app = QtWidgets.QApplication(sys.argv) + server = Server() + random.seed(None) + sys.exit(server.exec_()) |