Python QtNetwork.QHostInfo类代码示例

def _is_url_dns(urlstr):
    """Check if a URL is really a URL via DNS.

    Args:
        url: The URL to check for as a string.

    Return:
        True if the URL really is a URL, False otherwise.
    """
    url = qurl_from_user_input(urlstr)
    assert url.isValid()

    if (utils.raises(ValueError, ipaddress.ip_address, urlstr) and
            not QHostAddress(urlstr).isNull()):
        log.url.debug("Bogus IP URL -> False")
        # Qt treats things like "23.42" or "1337" or "0xDEAD" as valid URLs
        # which we don't want to.
        return False

    host = url.host()
    if not host:
        log.url.debug("URL has no host -> False")
        return False
    log.url.debug("Doing DNS request for {}".format(host))
    info = QHostInfo.fromName(host)
    return not info.error()

 def nickName(self):
     """
     Public method to get the nick name.
     
     @return nick name (string)
     """
     return "{0}@{1}@{2}".format(
         self.__username,
         QHostInfo.localHostName(),
         self.__servers[0].serverPort()
     )

    def dnsResolve(self, host):
        """Resolve a DNS hostname.

        Resolves the given DNS hostname into an IP address, and returns it
        in the dot-separated format as a string.

        Args:
            host: hostname to resolve.
        """
        ips = QHostInfo.fromName(host)
        if ips.error() != QHostInfo.NoError or not ips.addresses():
            err_f = "Failed to resolve host during PAC evaluation: {}"
            log.network.info(err_f.format(host))
            return QJSValue(QJSValue.NullValue)
        else:
            return ips.addresses()[0].toString()

def _is_url_dns(url):
    """Check if a URL is really a URL via DNS.

    Args:
        url: The URL to check for as QUrl, ideally via qurl_from_user_input.

    Return:
        True if the URL really is a URL, False otherwise.
    """
    if not url.isValid():
        return False
    host = url.host()
    log.url.debug("DNS request for {}".format(host))
    if not host:
        return False
    info = QHostInfo.fromName(host)
    return not info.error()

    def __init__(self, parent=None):
        super(Client, self).__init__(parent)

        self.networkSession = None
        self.blockSize = 0
        self.currentFortune = ""

        hostLabel = QLabel("&Server name:")
        portLabel = QLabel("S&erver port:")

        self.hostCombo = QComboBox()
        self.hostCombo.setEditable(True)

        name = QHostInfo.localHostName()
        if name != "":
            self.hostCombo.addItem(name)

            domain = QHostInfo.localDomainName()
            if domain != "":
                self.hostCombo.addItem(name + "." + domain)

        if name != "localhost":
            self.hostCombo.addItem("localhost")

        ipAddressesList = QNetworkInterface.allAddresses()

        for ipAddress in ipAddressesList:
            if not ipAddress.isLoopback():
                self.hostCombo.addItem(ipAddress.toString())

        for ipAddress in ipAddressesList:
            if ipAddress.isLoopback():
                self.hostCombo.addItem(ipAddress.toString())

        self.portLineEdit = QLineEdit()
        self.portLineEdit.setValidator(QIntValidator(1, 65535, self))

        hostLabel.setBuddy(self.hostCombo)
        portLabel.setBuddy(self.portLineEdit)

        self.statusLabel = QLabel("This examples requires that you run " "the Fortune Server example as well.")

        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.tcpSocket = QTcpSocket(self)

        self.hostCombo.editTextChanged.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 = QGridLayout()
        mainLayout.addWidget(hostLabel, 0, 0)
        mainLayout.addWidget(self.hostCombo, 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()

        manager = QNetworkConfigurationManager()
        if manager.capabilities() & QNetworkConfigurationManager.NetworkSessionRequired:
            settings = QSettings(QSettings.UserScope, "QtProject")
            settings.beginGroup("QtNetwork")
            id = settings.value("DefaultNetworkConfiguration")
            settings.endGroup()

            config = manager.configurationFromIdentifier(id)
            if config.state() & QNetworkConfiguration.Discovered == 0:
                config = manager.defaultConfiguration()

            self.networkSession = QNetworkSession(config, self)
            self.networkSession.opened.connect(self.sessionOpened)

            self.getFortuneButton.setEnabled(False)
            self.statusLabel.setText("Opening network session.")
            self.networkSession.open()

 def mock_fromName(host):
     info = QHostInfo()
     if host == "known.domain":
         info.setAddresses([QHostAddress("1.2.3.4")])
     return info

    def __processReadyRead(self):
        """
        Private slot to handle the readyRead signal.
        """
        if self.__state == Connection.WaitingForGreeting:
            if not self.__readProtocolHeader():
                return
            if self.__currentDataType != Connection.Greeting:
                self.abort()
                return
            self.__state = Connection.ReadingGreeting
        
        if self.__state == Connection.ReadingGreeting:
            if not self.__hasEnoughData():
                return
            
            self.__buffer = QByteArray(
                self.read(self.__numBytesForCurrentDataType))
            if self.__buffer.size() != self.__numBytesForCurrentDataType:
                self.abort()
                return
            
            try:
                user, serverPort = \
                    str(self.__buffer, encoding="utf-8").split(":")
            except ValueError:
                self.abort()
                return
            self.__serverPort = int(serverPort)
            
            hostInfo = QHostInfo.fromName(self.peerAddress().toString())
            self.__username = "{0}@{1}@{2}".format(
                user,
                hostInfo.hostName(),
                self.peerPort()
            )
            self.__currentDataType = Connection.Undefined
            self.__numBytesForCurrentDataType = 0
            self.__buffer.clear()
            
            if not self.isValid():
                self.abort()
                return
            
            bannedName = "{0}@{1}".format(
                user,
                hostInfo.hostName(),
            )
            Preferences.syncPreferences()
            if bannedName in Preferences.getCooperation("BannedUsers"):
                self.rejected.emit(self.tr(
                    "* Connection attempted by banned user '{0}'.")
                    .format(bannedName))
                self.abort()
                return
            
            if self.__serverPort != self.peerPort() and \
               not Preferences.getCooperation("AutoAcceptConnections"):
                # don't ask for reverse connections or
                # if we shall accept automatically
                res = E5MessageBox.yesNo(
                    None,
                    self.tr("New Connection"),
                    self.tr("""<p>Accept connection from """
                            """<strong>{0}@{1}</strong>?</p>""").format(
                        user, hostInfo.hostName()),
                    yesDefault=True)
                if not res:
                    self.abort()
                    return

            if self.__client is not None:
                chatWidget = self.__client.chatWidget()
                if chatWidget is not None and not chatWidget.isVisible():
                    e5App().getObject(
                        "UserInterface").activateCooperationViewer()
            
            if not self.__isGreetingMessageSent:
                self.__sendGreetingMessage()
            
            self.__pingTimer.start()
            self.__pongTime.start()
            self.__state = Connection.ReadyForUse
            self.readyForUse.emit()
        
        while self.bytesAvailable():
            if self.__currentDataType == Connection.Undefined:
                if not self.__readProtocolHeader():
                    return
            
            if not self.__hasEnoughData():
                return
            
            self.__processData()