diff options
author | Friedemann Kleint <Friedemann.Kleint@qt.io> | 2018-01-05 15:58:35 +0100 |
---|---|---|
committer | Friedemann Kleint <Friedemann.Kleint@qt.io> | 2018-01-12 12:28:10 +0000 |
commit | 9f2a9aba3aff73e31ea15eb4a7a04b0e50f4ee4e (patch) | |
tree | 92dcb0c4f64df8a8375af2e1a9bb1170068c36b2 /examples/network | |
parent | 26c046e521c38bbfc3a263782a3bb74a7c1bf937 (diff) |
Move examples from submodule to pyside-setup
Move PySide2 examples that are owned by the Qt Company
to a new examples directory.
Done-with: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io>
Task-number: PYSIDE-363
Change-Id: I14099764d9eef2bc35e067086121427955862e3a
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Diffstat (limited to 'examples/network')
-rw-r--r-- | examples/network/blockingfortuneclient.py | 225 | ||||
-rwxr-xr-x | examples/network/fortuneclient.py | 168 | ||||
-rwxr-xr-x | examples/network/fortuneserver.py | 125 | ||||
-rwxr-xr-x | examples/network/threadedfortuneserver.py | 153 |
4 files changed, 671 insertions, 0 deletions
diff --git a/examples/network/blockingfortuneclient.py b/examples/network/blockingfortuneclient.py new file mode 100644 index 000000000..8e73af0f0 --- /dev/null +++ b/examples/network/blockingfortuneclient.py @@ -0,0 +1,225 @@ +#!/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/blockingfortunclient example from Qt v5.x, originating from PyQt""" + +from PySide2.QtCore import (Signal, QDataStream, QMutex, QMutexLocker, + QThread, QWaitCondition) +from PySide2.QtGui import QIntValidator +from PySide2.QtWidgets import (QApplication, QDialogButtonBox, QGridLayout, + QLabel, QLineEdit, QMessageBox, QPushButton, QWidget) +from PySide2.QtNetwork import (QAbstractSocket, QHostAddress, QNetworkInterface, + QTcpSocket) + + +class FortuneThread(QThread): + newFortune = Signal(str) + + error = Signal(int, str) + + def __init__(self, parent=None): + super(FortuneThread, self).__init__(parent) + + self.quit = False + self.hostName = '' + self.cond = QWaitCondition() + self.mutex = QMutex() + self.port = 0 + + def __del__(self): + self.mutex.lock() + self.quit = True + self.cond.wakeOne() + self.mutex.unlock() + self.wait() + + def requestNewFortune(self, hostname, port): + locker = QMutexLocker(self.mutex) + self.hostName = hostname + self.port = port + if not self.isRunning(): + self.start() + else: + self.cond.wakeOne() + + def run(self): + self.mutex.lock() + serverName = self.hostName + serverPort = self.port + self.mutex.unlock() + + while not self.quit: + Timeout = 5 * 1000 + + socket = QTcpSocket() + socket.connectToHost(serverName, serverPort) + + if not socket.waitForConnected(Timeout): + self.error.emit(socket.error(), socket.errorString()) + return + + while socket.bytesAvailable() < 2: + if not socket.waitForReadyRead(Timeout): + self.error.emit(socket.error(), socket.errorString()) + return + + instr = QDataStream(socket) + instr.setVersion(QDataStream.Qt_4_0) + blockSize = instr.readUInt16() + + while socket.bytesAvailable() < blockSize: + if not socket.waitForReadyRead(Timeout): + self.error.emit(socket.error(), socket.errorString()) + return + + self.mutex.lock() + fortune = instr.readQString() + self.newFortune.emit(fortune) + + self.cond.wait(self.mutex) + serverName = self.hostName + serverPort = self.port + self.mutex.unlock() + + +class BlockingClient(QWidget): + def __init__(self, parent=None): + super(BlockingClient, self).__init__(parent) + + self.thread = FortuneThread() + self.currentFortune = '' + + hostLabel = QLabel("&Server name:") + portLabel = QLabel("S&erver port:") + + for ipAddress in QNetworkInterface.allAddresses(): + if ipAddress != QHostAddress.LocalHost and ipAddress.toIPv4Address() != 0: + break + else: + ipAddress = QHostAddress(QHostAddress.LocalHost) + + ipAddress = ipAddress.toString() + + self.hostLineEdit = QLineEdit(ipAddress) + self.portLineEdit = QLineEdit() + self.portLineEdit.setValidator(QIntValidator(1, 65535, self)) + + hostLabel.setBuddy(self.hostLineEdit) + portLabel.setBuddy(self.portLineEdit) + + self.statusLabel = QLabel( + "This example requires that you run the Fortune Server example as well.") + self.statusLabel.setWordWrap(True) + + self.getFortuneButton = QPushButton("Get Fortune") + self.getFortuneButton.setDefault(True) + self.getFortuneButton.setEnabled(False) + + quitButton = QPushButton("Quit") + + buttonBox = QDialogButtonBox() + buttonBox.addButton(self.getFortuneButton, QDialogButtonBox.ActionRole) + buttonBox.addButton(quitButton, QDialogButtonBox.RejectRole) + + self.getFortuneButton.clicked.connect(self.requestNewFortune) + quitButton.clicked.connect(self.close) + self.hostLineEdit.textChanged.connect(self.enableGetFortuneButton) + self.portLineEdit.textChanged.connect(self.enableGetFortuneButton) + self.thread.newFortune.connect(self.showFortune) + self.thread.error.connect(self.displayError) + + mainLayout = QGridLayout() + mainLayout.addWidget(hostLabel, 0, 0) + mainLayout.addWidget(self.hostLineEdit, 0, 1) + mainLayout.addWidget(portLabel, 1, 0) + mainLayout.addWidget(self.portLineEdit, 1, 1) + mainLayout.addWidget(self.statusLabel, 2, 0, 1, 2) + mainLayout.addWidget(buttonBox, 3, 0, 1, 2) + self.setLayout(mainLayout) + + self.setWindowTitle("Blocking Fortune Client") + self.portLineEdit.setFocus() + + def requestNewFortune(self): + self.getFortuneButton.setEnabled(False) + self.thread.requestNewFortune(self.hostLineEdit.text(), + int(self.portLineEdit.text())) + + def showFortune(self, nextFortune): + if nextFortune == self.currentFortune: + self.requestNewFortune() + return + + self.currentFortune = nextFortune + self.statusLabel.setText(self.currentFortune) + self.getFortuneButton.setEnabled(True) + + def displayError(self, socketError, message): + if socketError == QAbstractSocket.HostNotFoundError: + QMessageBox.information(self, "Blocking Fortune Client", + "The host was not found. Please check the host and port " + "settings.") + elif socketError == QAbstractSocket.ConnectionRefusedError: + QMessageBox.information(self, "Blocking Fortune Client", + "The connection was refused by the peer. Make sure the " + "fortune server is running, and check that the host name " + "and port settings are correct.") + else: + QMessageBox.information(self, "Blocking Fortune Client", + "The following error occurred: %s." % message) + + self.getFortuneButton.setEnabled(True) + + def enableGetFortuneButton(self): + self.getFortuneButton.setEnabled(self.hostLineEdit.text() != '' and + self.portLineEdit.text() != '') + + +if __name__ == '__main__': + + import sys + + app = QApplication(sys.argv) + client = BlockingClient() + client.show() + sys.exit(app.exec_()) diff --git a/examples/network/fortuneclient.py b/examples/network/fortuneclient.py new file mode 100755 index 000000000..3ec5623b8 --- /dev/null +++ b/examples/network/fortuneclient.py @@ -0,0 +1,168 @@ +#!/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/fortuneclient example from Qt v5.x""" + +from PySide2 import QtCore, QtGui, QtWidgets, QtNetwork + + +class Client(QtWidgets.QDialog): + def __init__(self, parent=None): + super(Client, self).__init__(parent) + + self.blockSize = 0 + self.currentFortune = '' + + hostLabel = QtWidgets.QLabel("&Server name:") + portLabel = QtWidgets.QLabel("S&erver port:") + + self.hostLineEdit = QtWidgets.QLineEdit('Localhost') + self.portLineEdit = QtWidgets.QLineEdit() + self.portLineEdit.setValidator(QtGui.QIntValidator(1, 65535, self)) + + hostLabel.setBuddy(self.hostLineEdit) + portLabel.setBuddy(self.portLineEdit) + + self.statusLabel = QtWidgets.QLabel("This examples requires that you run " + "the Fortune Server example as well.") + + self.getFortuneButton = QtWidgets.QPushButton("Get Fortune") + self.getFortuneButton.setDefault(True) + self.getFortuneButton.setEnabled(False) + + quitButton = QtWidgets.QPushButton("Quit") + + buttonBox = QtWidgets.QDialogButtonBox() + buttonBox.addButton(self.getFortuneButton, + QtWidgets.QDialogButtonBox.ActionRole) + buttonBox.addButton(quitButton, QtWidgets.QDialogButtonBox.RejectRole) + + self.tcpSocket = QtNetwork.QTcpSocket(self) + + self.hostLineEdit.textChanged.connect(self.enableGetFortuneButton) + self.portLineEdit.textChanged.connect(self.enableGetFortuneButton) + self.getFortuneButton.clicked.connect(self.requestNewFortune) + quitButton.clicked.connect(self.close) + self.tcpSocket.readyRead.connect(self.readFortune) + self.tcpSocket.error.connect(self.displayError) + + mainLayout = QtWidgets.QGridLayout() + mainLayout.addWidget(hostLabel, 0, 0) + mainLayout.addWidget(self.hostLineEdit, 0, 1) + mainLayout.addWidget(portLabel, 1, 0) + mainLayout.addWidget(self.portLineEdit, 1, 1) + mainLayout.addWidget(self.statusLabel, 2, 0, 1, 2) + mainLayout.addWidget(buttonBox, 3, 0, 1, 2) + self.setLayout(mainLayout) + + self.setWindowTitle("Fortune Client") + self.portLineEdit.setFocus() + + def requestNewFortune(self): + self.getFortuneButton.setEnabled(False) + self.blockSize = 0 + self.tcpSocket.abort() + self.tcpSocket.connectToHost(self.hostLineEdit.text(), + int(self.portLineEdit.text())) + + def readFortune(self): + instr = QtCore.QDataStream(self.tcpSocket) + instr.setVersion(QtCore.QDataStream.Qt_4_0) + + if self.blockSize == 0: + if self.tcpSocket.bytesAvailable() < 2: + return + + self.blockSize = instr.readUInt16() + + if self.tcpSocket.bytesAvailable() < self.blockSize: + return + + nextFortune = instr.readString() + + try: + # Python v3. + nextFortune = str(nextFortune, encoding='ascii') + except TypeError: + # Python v2. + pass + + if nextFortune == self.currentFortune: + QtCore.QTimer.singleShot(0, self.requestNewFortune) + return + + self.currentFortune = nextFortune + self.statusLabel.setText(self.currentFortune) + self.getFortuneButton.setEnabled(True) + + def displayError(self, socketError): + if socketError == QtNetwork.QAbstractSocket.RemoteHostClosedError: + pass + elif socketError == QtNetwork.QAbstractSocket.HostNotFoundError: + QtWidgets.QMessageBox.information(self, "Fortune Client", + "The host was not found. Please check the host name and " + "port settings.") + elif socketError == QtNetwork.QAbstractSocket.ConnectionRefusedError: + QtWidgets.QMessageBox.information(self, "Fortune Client", + "The connection was refused by the peer. Make sure the " + "fortune server is running, and check that the host name " + "and port settings are correct.") + else: + QtWidgets.QMessageBox.information(self, "Fortune Client", + "The following error occurred: %s." % self.tcpSocket.errorString()) + + self.getFortuneButton.setEnabled(True) + + def enableGetFortuneButton(self): + self.getFortuneButton.setEnabled(bool(self.hostLineEdit.text() and + self.portLineEdit.text())) + + +if __name__ == '__main__': + + import sys + + app = QtWidgets.QApplication(sys.argv) + client = Client() + client.show() + sys.exit(client.exec_()) 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_()) 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_()) |