1 2############################################################################# 3## 4## Copyright (C) 2013 Riverbank Computing Limited. 5## Copyright (C) 2016 The Qt Company Ltd. 6## Contact: http://www.qt.io/licensing/ 7## 8## This file is part of the Qt for Python examples of the Qt Toolkit. 9## 10## $QT_BEGIN_LICENSE:BSD$ 11## You may use this file under the terms of the BSD license as follows: 12## 13## "Redistribution and use in source and binary forms, with or without 14## modification, are permitted provided that the following conditions are 15## met: 16## * Redistributions of source code must retain the above copyright 17## notice, this list of conditions and the following disclaimer. 18## * Redistributions in binary form must reproduce the above copyright 19## notice, this list of conditions and the following disclaimer in 20## the documentation and/or other materials provided with the 21## distribution. 22## * Neither the name of The Qt Company Ltd nor the names of its 23## contributors may be used to endorse or promote products derived 24## from this software without specific prior written permission. 25## 26## 27## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 28## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 29## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 30## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 31## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 32## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 33## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 34## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 35## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 36## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 37## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." 38## 39## $QT_END_LICENSE$ 40## 41############################################################################# 42 43"""PySide2 port of the network/fortuneserver example from Qt v5.x""" 44 45import random 46 47from PySide2 import QtCore, QtWidgets, QtNetwork 48 49 50class Server(QtWidgets.QDialog): 51 def __init__(self, parent=None): 52 super(Server, self).__init__(parent) 53 54 statusLabel = QtWidgets.QLabel() 55 quitButton = QtWidgets.QPushButton("Quit") 56 quitButton.setAutoDefault(False) 57 58 self.tcpServer = QtNetwork.QTcpServer(self) 59 if not self.tcpServer.listen(): 60 QtWidgets.QMessageBox.critical(self, "Fortune Server", 61 "Unable to start the server: %s." % self.tcpServer.errorString()) 62 self.close() 63 return 64 65 statusLabel.setText("The server is running on port %d.\nRun the " 66 "Fortune Client example now." % self.tcpServer.serverPort()) 67 68 self.fortunes = ( 69 "You've been leading a dog's life. Stay off the furniture.", 70 "You've got to think about tomorrow.", 71 "You will be surprised by a loud noise.", 72 "You will feel hungry again in another hour.", 73 "You might have mail.", 74 "You cannot kill time without injuring eternity.", 75 "Computers are not intelligent. They only think they are.") 76 77 quitButton.clicked.connect(self.close) 78 self.tcpServer.newConnection.connect(self.sendFortune) 79 80 buttonLayout = QtWidgets.QHBoxLayout() 81 buttonLayout.addStretch(1) 82 buttonLayout.addWidget(quitButton) 83 buttonLayout.addStretch(1) 84 85 mainLayout = QtWidgets.QVBoxLayout() 86 mainLayout.addWidget(statusLabel) 87 mainLayout.addLayout(buttonLayout) 88 self.setLayout(mainLayout) 89 90 self.setWindowTitle("Fortune Server") 91 92 def sendFortune(self): 93 block = QtCore.QByteArray() 94 out = QtCore.QDataStream(block, QtCore.QIODevice.WriteOnly) 95 out.setVersion(QtCore.QDataStream.Qt_4_0) 96 out.writeUInt16(0) 97 fortune = self.fortunes[random.randint(0, len(self.fortunes) - 1)] 98 99 out.writeString(fortune) 100 out.device().seek(0) 101 out.writeUInt16(block.size() - 2) 102 103 clientConnection = self.tcpServer.nextPendingConnection() 104 clientConnection.disconnected.connect(clientConnection.deleteLater) 105 106 clientConnection.write(block) 107 clientConnection.disconnectFromHost() 108 109 110if __name__ == '__main__': 111 112 import sys 113 114 app = QtWidgets.QApplication(sys.argv) 115 server = Server() 116 random.seed(None) 117 sys.exit(server.exec_()) 118