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Diffstat (limited to 'examples/network/threadedfortuneserver.py')
| -rwxr-xr-x | examples/network/threadedfortuneserver.py | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/examples/network/threadedfortuneserver.py b/examples/network/threadedfortuneserver.py new file mode 100755 index 000000000..95452e7e9 --- /dev/null +++ b/examples/network/threadedfortuneserver.py @@ -0,0 +1,153 @@ +#!/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/threadedfortuneserver example from Qt v5.x, originating from PyQt""" + +import random + +from PySide2.QtCore import (Signal, QByteArray, QDataStream, QIODevice, + QThread, Qt) +from PySide2.QtWidgets import (QApplication, QDialog, QHBoxLayout, QLabel, + QMessageBox, QPushButton, QVBoxLayout) +from PySide2.QtNetwork import (QHostAddress, QNetworkInterface, QTcpServer, + QTcpSocket) + + +class FortuneThread(QThread): + error = Signal(QTcpSocket.SocketError) + + def __init__(self, socketDescriptor, fortune, parent): + super(FortuneThread, self).__init__(parent) + + self.socketDescriptor = socketDescriptor + self.text = fortune + + def run(self): + tcpSocket = QTcpSocket() + if not tcpSocket.setSocketDescriptor(self.socketDescriptor): + self.error.emit(tcpSocket.error()) + return + + block = QByteArray() + outstr = QDataStream(block, QIODevice.WriteOnly) + outstr.setVersion(QDataStream.Qt_4_0) + outstr.writeUInt16(0) + outstr.writeQString(self.text) + outstr.device().seek(0) + outstr.writeUInt16(block.size() - 2) + + tcpSocket.write(block) + tcpSocket.disconnectFromHost() + tcpSocket.waitForDisconnected() + + +class FortuneServer(QTcpServer): + 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.") + + def incomingConnection(self, socketDescriptor): + fortune = self.fortunes[random.randint(0, len(self.fortunes) - 1)] + + thread = FortuneThread(socketDescriptor, fortune, self) + thread.finished.connect(thread.deleteLater) + thread.start() + + +class Dialog(QDialog): + def __init__(self, parent=None): + super(Dialog, self).__init__(parent) + + self.server = FortuneServer() + + statusLabel = QLabel() + statusLabel.setTextInteractionFlags(Qt.TextBrowserInteraction) + statusLabel.setWordWrap(True) + quitButton = QPushButton("Quit") + quitButton.setAutoDefault(False) + + if not self.server.listen(): + QMessageBox.critical(self, "Threaded Fortune Server", + "Unable to start the server: %s." % self.server.errorString()) + self.close() + return + + for ipAddress in QNetworkInterface.allAddresses(): + if ipAddress != QHostAddress.LocalHost and ipAddress.toIPv4Address() != 0: + break + else: + ipAddress = QHostAddress(QHostAddress.LocalHost) + + ipAddress = ipAddress.toString() + + statusLabel.setText("The server is running on\n\nIP: %s\nport: %d\n\n" + "Run the Fortune Client example now." % (ipAddress, self.server.serverPort())) + + quitButton.clicked.connect(self.close) + + buttonLayout = QHBoxLayout() + buttonLayout.addStretch(1) + buttonLayout.addWidget(quitButton) + buttonLayout.addStretch(1) + + mainLayout = QVBoxLayout() + mainLayout.addWidget(statusLabel) + mainLayout.addLayout(buttonLayout) + self.setLayout(mainLayout) + + self.setWindowTitle("Threaded Fortune Server") + + +if __name__ == '__main__': + + import sys + + app = QApplication(sys.argv) + dialog = Dialog() + dialog.show() + sys.exit(dialog.exec_()) |