本文在上文的基础上重新实现支持多线程的服务器。
以下为TCP客户端的程序代码:
#!/usr/bin/env python3 import sys from PyQt5.QtCore import (QByteArray, QDataStream, QDate, QIODevice, QRegExp, Qt) from PyQt5.QtWidgets import (QApplication, QDateEdit, QFrame, QGridLayout, QHBoxLayout, QLabel, QLineEdit, QPushButton, QWidget) from PyQt5.QtGui import QRegExpValidator from PyQt5.QtNetwork import (QTcpSocket,) MAC = True try: from PyQt5.QtGui import qt_mac_set_native_menubar except ImportError: MAC = False PORT = 9407 SIZEOF_UINT16 = 2 class BuildingServicesClient(QWidget): def __init__(self, parent=None): super(BuildingServicesClient, self).__init__(parent) self.socket = QTcpSocket() self.nextBlockSize = 0 self.request = None roomLabel = QLabel("&Room") self.roomEdit = QLineEdit() roomLabel.setBuddy(self.roomEdit) regex = QRegExp(r"[0-9](") self.roomEdit.setValidator(QRegExpValidator(regex, self)) self.roomEdit.setAlignment(Qt.AlignRight|Qt.AlignVCenter) dateLabel = QLabel("&Date") self.dateEdit = QDateEdit() dateLabel.setBuddy(self.dateEdit) self.dateEdit.setAlignment(Qt.AlignRight|Qt.AlignVCenter) self.dateEdit.setDate(QDate.currentDate().addDays(1)) self.dateEdit.setDisplayFormat("yyyy-MM-dd") responseLabel = QLabel("Response") self.responseLabel = QLabel() self.responseLabel.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken) self.bookButton = QPushButton("&Book") self.bookButton.setEnabled(False) self.unBookButton = QPushButton("&Unbook") self.unBookButton.setEnabled(False) quitButton = QPushButton("&Quit") if not MAC: self.bookButton.setFocusPolicy(Qt.NoFocus) self.unBookButton.setFocusPolicy(Qt.NoFocus) buttonLayout = QHBoxLayout() buttonLayout.addWidget(self.bookButton) buttonLayout.addWidget(self.unBookButton) buttonLayout.addStretch() buttonLayout.addWidget(quitButton) layout = QGridLayout() layout.addWidget(roomLabel, 0, 0) layout.addWidget(self.roomEdit, 0, 1) layout.addWidget(dateLabel, 0, 2) layout.addWidget(self.dateEdit, 0, 3) layout.addWidget(responseLabel, 1, 0) layout.addWidget(self.responseLabel, 1, 1, 1, 3) layout.addLayout(buttonLayout, 2, 1, 1, 4) self.setLayout(layout) self.socket.connected.connect(self.sendRequest) self.socket.readyRead.connect(self.readResponse) self.socket.disconnected.connect(self.serverHasStopped) #self.connect(self.socket, # SIGNAL("error(QAbstractSocket::SocketError)"), # self.serverHasError) self.socket.error.connect(self.serverHasError) self.roomEdit.textEdited.connect(self.updateUi) self.dateEdit.dateChanged.connect(self.updateUi) self.bookButton.clicked.connect(self.book) self.unBookButton.clicked.connect(self.unBook) quitButton.clicked.connect(self.close) self.setWindowTitle("Building Services") def updateUi(self): enabled = False if (self.roomEdit.text() and self.dateEdit.date() > QDate.currentDate()): enabled = True if self.request is not None: enabled = False self.bookButton.setEnabled(enabled) self.unBookButton.setEnabled(enabled) def closeEvent(self, event): self.socket.close() event.accept() def book(self): self.issueRequest("BOOK", self.roomEdit.text(), self.dateEdit.date()) def unBook(self): self.issueRequest("UNBOOK", self.roomEdit.text(), self.dateEdit.date()) def issueRequest(self, action, room, date): self.request = QByteArray() stream = QDataStream(self.request, QIODevice.WriteOnly) stream.setVersion(QDataStream.Qt_5_7) stream.writeUInt16(0) stream.writeQString(action) stream.writeQString(room) stream << date stream.device().seek(0) stream.writeUInt16(self.request.size() - SIZEOF_UINT16)#overwrite seek(0) self.updateUi() if self.socket.isOpen(): self.socket.close() self.responseLabel.setText("Connecting to server...") self.socket.connectToHost("localhost", PORT) def sendRequest(self): self.responseLabel.setText("Sending request...") self.nextBlockSize = 0 self.socket.write(self.request) self.request = None def readResponse(self): stream = QDataStream(self.socket) stream.setVersion(QDataStream.Qt_5_7) while True: if self.nextBlockSize == 0: if self.socket.bytesAvailable() < SIZEOF_UINT16: break self.nextBlockSize = stream.readUInt16() if self.socket.bytesAvailable() < self.nextBlockSize: break action = "" room = "" date = QDate() #stream action room action=stream.readQString() room=stream.readQString() if action != "ERROR": stream date if action == "ERROR": msg = "Error: {0}".format(room) elif action == "BOOK": msg = "Booked room {0} for {1}".format(room,date.toString(Qt.ISODate)) elif action == "UNBOOK": msg = "Unbooked room {0} for {1}".format(room,date.toString(Qt.ISODate)) self.responseLabel.setText(msg) self.updateUi() self.nextBlockSize = 0 def serverHasStopped(self): self.responseLabel.setText( "Error: Connection closed by server") self.socket.close() def serverHasError(self, error): self.responseLabel.setText("Error: {0}".format(self.socket.errorString())) self.socket.close() app = QApplication(sys.argv) form = BuildingServicesClient() form.show() app.exec_()
以下为TCP服务端的程序代码:
#!/usr/bin/env python3 import bisect import collections import sys from PyQt5.QtCore import (QByteArray, QDataStream, QDate, QReadWriteLock, QThread,QIODevice, Qt) from PyQt5.QtWidgets import (QApplication, QMessageBox, QPushButton) from PyQt5.QtNetwork import (QAbstractSocket,QHostAddress, QTcpServer, QTcpSocket) PORT = 9407 SIZEOF_UINT16 = 2 MAX_BOOKINGS_PER_DAY = 5 # Key = date, value = list of room IDs Bookings = collections.defaultdict(list) def printBookings(): for key in sorted(Bookings): print(key, Bookings[key]) print() class Thread(QThread): lock = QReadWriteLock() def __init__(self, socketId, parent): super(Thread, self).__init__(parent) self.socketId = socketId def run(self): socket = QTcpSocket() if not socket.setSocketDescriptor(self.socketId): #self.emit(SIGNAL("error(int)"), socket.error()) self.error.connect(socket.error) return while socket.state() == QAbstractSocket.ConnectedState: nextBlockSize = 0 stream = QDataStream(socket) stream.setVersion(QDataStream.Qt_5_7) if (socket.waitForReadyRead() and socket.bytesAvailable() >= SIZEOF_UINT16): nextBlockSize = stream.readUInt16() else: self.sendError(socket, "Cannot read client request") return if socket.bytesAvailable() < nextBlockSize: if (not socket.waitForReadyRead(60000) or socket.bytesAvailable() < nextBlockSize): self.sendError(socket, "Cannot read client data") return action = "" room = "" date = QDate() action=stream.readQString() if action in ("BOOK", "UNBOOK"): room=stream.readQString() stream date try: Thread.lock.lockForRead() bookings = Bookings.get(date.toPyDate()) finally: Thread.lock.unlock() uroom = str(room) if action == "BOOK": newlist = False try: Thread.lock.lockForRead() if bookings is None: newlist = True finally: Thread.lock.unlock() if newlist: try: Thread.lock.lockForWrite() bookings = Bookings[date.toPyDate()] finally: Thread.lock.unlock() error = None insert = False try: Thread.lock.lockForRead() if len(bookings) < MAX_BOOKINGS_PER_DAY: if uroom in bookings: error = "Cannot accept duplicate booking" else: insert = True else: error = "{0} is fully booked".format(date.toString(Qt.ISODate)) finally: Thread.lock.unlock() if insert: try: Thread.lock.lockForWrite() bisect.insort(bookings, uroom) finally: Thread.lock.unlock() self.sendReply(socket, action, room, date) else: self.sendError(socket, error) elif action == "UNBOOK": error = None remove = False try: Thread.lock.lockForRead() if bookings is None or uroom not in bookings: error = "Cannot unbook nonexistent booking" else: remove = True finally: Thread.lock.unlock() if remove: try: Thread.lock.lockForWrite() bookings.remove(uroom) finally: Thread.lock.unlock() self.sendReply(socket, action, room, date) else: self.sendError(socket, error) else: self.sendError(socket, "Unrecognized request") socket.waitForDisconnected() try: Thread.lock.lockForRead() printBookings() finally: Thread.lock.unlock() def sendError(self, socket, msg): reply = QByteArray() stream = QDataStream(reply, QIODevice.WriteOnly) stream.setVersion(QDataStream.Qt_5_7) stream.writeUInt16(0) stream.writeQString("ERROR") stream.writeQString(msg) stream.device().seek(0) stream.writeUInt16(reply.size() - SIZEOF_UINT16) socket.write(reply) def sendReply(self, socket, action, room, date): reply = QByteArray() stream = QDataStream(reply, QIODevice.WriteOnly) stream.setVersion(QDataStream.Qt_5_7) stream.writeUInt16(0) stream.writeQString(action) stream.writeQString(room) stream<<date stream.device().seek(0) stream.writeUInt16(reply.size() - SIZEOF_UINT16) socket.write(reply) class TcpServer(QTcpServer): def __init__(self, parent=None): super(TcpServer, self).__init__(parent) def incomingConnection(self, socketId): thread = Thread(socketId, self) #self.connect(thread, SIGNAL("finished()"), # thread, SLOT("deleteLater()")) thread.finished.connect(thread.deleteLater) thread.start() class BuildingServicesDlg(QPushButton): def __init__(self, parent=None): super(BuildingServicesDlg, self).__init__( "&Close Server", parent) self.setWindowFlags(Qt.WindowStaysOnTopHint) self.loadBookings() self.tcpServer = TcpServer(self) if not self.tcpServer.listen(QHostAddress("0.0.0.0"), PORT): QMessageBox.critical(self, "Building Services Server","Failed to start server: {0}".format(self.tcpServer.errorString())) self.close() return self.clicked.connect(self.close) font = self.font() font.setPointSize(24) self.setFont(font) self.setWindowTitle("Building Services Server") def loadBookings(self): # Generate fake data import random today = QDate.currentDate() for i in range(10): date = today.addDays(random.randint(7, 60)) for j in range(random.randint(1, MAX_BOOKINGS_PER_DAY)): # Rooms are 001..534 excl. 100, 200, ..., 500 floor = random.randint(0, 5) room = random.randint(1, 34) bookings = Bookings[date.toPyDate()] if len(bookings) >= MAX_BOOKINGS_PER_DAY: continue bisect.insort(bookings, "{0:1d}{1:02d}".format( floor, room)) printBookings() app = QApplication(sys.argv) form = BuildingServicesDlg() form.show() form.move(0, 0) app.exec_()
以上这篇python3+PyQt5 创建多线程网络应用-TCP客户端和TCP服务器实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。
华山资源网 Design By www.eoogi.com
广告合作:本站广告合作请联系QQ:858582 申请时备注:广告合作(否则不回)
免责声明:本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除!
免责声明:本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除!
华山资源网 Design By www.eoogi.com
暂无评论...
RTX 5090要首发 性能要翻倍!三星展示GDDR7显存
三星在GTC上展示了专为下一代游戏GPU设计的GDDR7内存。
首次推出的GDDR7内存模块密度为16GB,每个模块容量为2GB。其速度预设为32 Gbps(PAM3),但也可以降至28 Gbps,以提高产量和初始阶段的整体性能和成本效益。
据三星表示,GDDR7内存的能效将提高20%,同时工作电压仅为1.1V,低于标准的1.2V。通过采用更新的封装材料和优化的电路设计,使得在高速运行时的发热量降低,GDDR7的热阻比GDDR6降低了70%。
更新日志
2024年09月21日
2024年09月21日
- [ABC]安娜-胆麦发烧女声[6N纯银镀膜][2016[低速原抓WAV+CUE]
- 任天堂今晚举行直面会!第三方及独立游戏展示
- 《哆啦A梦的铜锣烧店物语》发售!开罗公式+哆啦A梦
- 任天堂公布《塞尔达传说》系列时间线:野炊与王泪独立在外
- 五条人.2012-一些风景2CD【刀马旦】【WAV+CUE】
- 陈奕迅.2013-Easons.Life演唱会2CD(2024环球红馆40复刻系列)【环球】【WAV+CUE】
- 许美静.1995-遗憾(新马版)【上华】【WAV+CUE】
- 《叶倩文 歌声情缘》[WAV+CUE][410MB]
- 《张国荣 首首动听经典不容错过 追忆的风 2CD》[WAV+CUE][870MB]
- 《腾格尔 容中尔甲 亚东 高原三星 男人篇 3CD》[WAV/分轨][1GB]
- 命运圣契公测实测可用兑换码大全 命运圣契最新兑换码分享
- 黑神话悟空上品疾蝠精魄获取方法一览|上品疾蝠精魄收集攻略
- 《七龙珠电光炸裂!ZERO》GT角色预告片曝光,15位新角色登场
- [ABC]安娜-胆麦发烧女声[6N纯银镀膜][2016[低速原抓WAV+CUE]
- NewViennaOctetViennaWindSoloists-TheDeccaRecordings(2024)18CD[24-48][FLAC]-7