mirror of https://github.com/qt/qtbase.git
441 lines
14 KiB
C++
441 lines
14 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the QtNetwork module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qlocalsocket.h"
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#include "qlocalsocket_p.h"
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#include "qlocalserver.h"
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#include <qhostaddress.h>
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#include <qsettings.h>
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#include <qdebug.h>
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QT_BEGIN_NAMESPACE
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QLocalSocketPrivate::QLocalSocketPrivate() : QIODevicePrivate(),
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tcpSocket(0),
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ownsTcpSocket(true),
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state(QLocalSocket::UnconnectedState)
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{
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}
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void QLocalSocketPrivate::init()
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{
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setSocket(new QLocalUnixSocket);
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}
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void QLocalSocketPrivate::setSocket(QLocalUnixSocket* socket)
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{
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if (ownsTcpSocket)
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delete tcpSocket;
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ownsTcpSocket = false;
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tcpSocket = socket;
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Q_Q(QLocalSocket);
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// QIODevice signals
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q->connect(tcpSocket, SIGNAL(aboutToClose()), q, SIGNAL(aboutToClose()));
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q->connect(tcpSocket, SIGNAL(bytesWritten(qint64)),
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q, SIGNAL(bytesWritten(qint64)));
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q->connect(tcpSocket, SIGNAL(readyRead()), q, SIGNAL(readyRead()));
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// QAbstractSocket signals
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q->connect(tcpSocket, SIGNAL(connected()), q, SIGNAL(connected()));
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q->connect(tcpSocket, SIGNAL(disconnected()), q, SIGNAL(disconnected()));
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q->connect(tcpSocket, SIGNAL(stateChanged(QAbstractSocket::SocketState)),
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q, SLOT(_q_stateChanged(QAbstractSocket::SocketState)));
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q->connect(tcpSocket, SIGNAL(error(QAbstractSocket::SocketError)),
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q, SLOT(_q_error(QAbstractSocket::SocketError)));
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q->connect(tcpSocket, SIGNAL(readChannelFinished()), q, SIGNAL(readChannelFinished()));
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tcpSocket->setParent(q);
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}
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void QLocalSocketPrivate::_q_error(QAbstractSocket::SocketError socketError)
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{
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Q_Q(QLocalSocket);
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QString function = QLatin1String("QLocalSocket");
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QLocalSocket::LocalSocketError error = (QLocalSocket::LocalSocketError)socketError;
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QString errorString = generateErrorString(error, function);
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q->setErrorString(errorString);
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emit q->error(error);
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}
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void QLocalSocketPrivate::_q_stateChanged(QAbstractSocket::SocketState newState)
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{
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Q_Q(QLocalSocket);
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QLocalSocket::LocalSocketState currentState = state;
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switch(newState) {
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case QAbstractSocket::UnconnectedState:
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state = QLocalSocket::UnconnectedState;
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serverName.clear();
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fullServerName.clear();
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break;
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case QAbstractSocket::ConnectingState:
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state = QLocalSocket::ConnectingState;
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break;
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case QAbstractSocket::ConnectedState:
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state = QLocalSocket::ConnectedState;
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break;
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case QAbstractSocket::ClosingState:
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state = QLocalSocket::ClosingState;
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break;
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default:
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#if defined QLOCALSOCKET_DEBUG
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qWarning() << "QLocalSocket::Unhandled socket state change:" << newState;
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#endif
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return;
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}
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if (currentState != state)
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emit q->stateChanged(state);
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}
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QString QLocalSocketPrivate::generateErrorString(QLocalSocket::LocalSocketError error, const QString &function) const
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{
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QString errorString;
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switch (error) {
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case QLocalSocket::ConnectionRefusedError:
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errorString = QLocalSocket::tr("%1: Connection refused").arg(function);
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break;
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case QLocalSocket::PeerClosedError:
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errorString = QLocalSocket::tr("%1: Remote closed").arg(function);
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break;
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case QLocalSocket::ServerNotFoundError:
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errorString = QLocalSocket::tr("%1: Invalid name").arg(function);
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break;
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case QLocalSocket::SocketAccessError:
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errorString = QLocalSocket::tr("%1: Socket access error").arg(function);
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break;
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case QLocalSocket::SocketResourceError:
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errorString = QLocalSocket::tr("%1: Socket resource error").arg(function);
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break;
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case QLocalSocket::SocketTimeoutError:
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errorString = QLocalSocket::tr("%1: Socket operation timed out").arg(function);
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break;
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case QLocalSocket::DatagramTooLargeError:
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errorString = QLocalSocket::tr("%1: Datagram too large").arg(function);
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break;
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case QLocalSocket::ConnectionError:
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errorString = QLocalSocket::tr("%1: Connection error").arg(function);
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break;
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case QLocalSocket::UnsupportedSocketOperationError:
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errorString = QLocalSocket::tr("%1: The socket operation is not supported").arg(function);
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break;
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case QLocalSocket::OperationError:
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errorString = QLocalSocket::tr("%1: Operation not permitted when socket is in this state").arg(function);
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break;
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case QLocalSocket::UnknownSocketError:
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default:
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errorString = QLocalSocket::tr("%1: Unknown error").arg(function);
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}
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return errorString;
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}
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void QLocalSocketPrivate::errorOccurred(QLocalSocket::LocalSocketError error, const QString &function)
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{
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Q_Q(QLocalSocket);
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switch (error) {
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case QLocalSocket::ConnectionRefusedError:
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tcpSocket->setSocketError(QAbstractSocket::ConnectionRefusedError);
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break;
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case QLocalSocket::PeerClosedError:
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tcpSocket->setSocketError(QAbstractSocket::RemoteHostClosedError);
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break;
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case QLocalSocket::ServerNotFoundError:
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tcpSocket->setSocketError(QAbstractSocket::HostNotFoundError);
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break;
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case QLocalSocket::SocketAccessError:
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tcpSocket->setSocketError(QAbstractSocket::SocketAccessError);
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break;
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case QLocalSocket::SocketResourceError:
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tcpSocket->setSocketError(QAbstractSocket::SocketResourceError);
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break;
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case QLocalSocket::SocketTimeoutError:
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tcpSocket->setSocketError(QAbstractSocket::SocketTimeoutError);
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break;
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case QLocalSocket::DatagramTooLargeError:
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tcpSocket->setSocketError(QAbstractSocket::DatagramTooLargeError);
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break;
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case QLocalSocket::ConnectionError:
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tcpSocket->setSocketError(QAbstractSocket::NetworkError);
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break;
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case QLocalSocket::UnsupportedSocketOperationError:
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tcpSocket->setSocketError(QAbstractSocket::UnsupportedSocketOperationError);
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break;
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case QLocalSocket::UnknownSocketError:
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default:
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tcpSocket->setSocketError(QAbstractSocket::UnknownSocketError);
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}
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QString errorString = generateErrorString(error, function);
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q->setErrorString(errorString);
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emit q->error(error);
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// errors cause a disconnect
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tcpSocket->setSocketState(QAbstractSocket::UnconnectedState);
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bool stateChanged = (state != QLocalSocket::UnconnectedState);
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state = QLocalSocket::UnconnectedState;
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q->close();
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if (stateChanged)
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q->emit stateChanged(state);
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}
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void QLocalSocket::connectToServer(const QString &name, OpenMode openMode)
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{
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Q_D(QLocalSocket);
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if (state() == ConnectedState
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|| state() == ConnectingState)
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return;
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d->errorString.clear();
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d->state = ConnectingState;
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emit stateChanged(d->state);
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if (name.isEmpty()) {
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d->errorOccurred(ServerNotFoundError,
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QLatin1String("QLocalSocket::connectToServer"));
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return;
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}
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d->serverName = name;
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const QLatin1String prefix("QLocalServer/");
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if (name.startsWith(prefix))
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d->fullServerName = name;
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else
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d->fullServerName = prefix + name;
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QSettings settings(QLatin1String("QtProject"), QLatin1String("Qt"));
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bool ok;
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const quint16 port = settings.value(d->fullServerName).toUInt(&ok);
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if (!ok) {
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d->errorOccurred(ServerNotFoundError,
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QLatin1String("QLocalSocket::connectToServer"));
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return;
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}
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d->tcpSocket->connectToHost(QHostAddress::LocalHost, port, openMode);
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QIODevice::open(openMode);
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}
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bool QLocalSocket::setSocketDescriptor(qintptr socketDescriptor,
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LocalSocketState socketState, OpenMode openMode)
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{
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Q_D(QLocalSocket);
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QAbstractSocket::SocketState newSocketState = QAbstractSocket::UnconnectedState;
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switch (socketState) {
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case ConnectingState:
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newSocketState = QAbstractSocket::ConnectingState;
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break;
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case ConnectedState:
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newSocketState = QAbstractSocket::ConnectedState;
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break;
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case ClosingState:
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newSocketState = QAbstractSocket::ClosingState;
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break;
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case UnconnectedState:
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newSocketState = QAbstractSocket::UnconnectedState;
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break;
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}
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QIODevice::open(openMode);
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d->state = socketState;
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// Is our parent a localServer? Then it wants us to use its remote socket.
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QLocalServer* localServer = qobject_cast<QLocalServer*>( parent() );
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if (localServer) {
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foreach (QObject* child, localServer->children()) {
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QTcpSocket* childTcpSocket = qobject_cast<QTcpSocket*>(child);
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if (childTcpSocket && childTcpSocket->socketDescriptor() == socketDescriptor) {
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d->setSocket( static_cast<QLocalUnixSocket*>(childTcpSocket) );
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return true;
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}
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}
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}
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// We couldn't find the socket in the children list of our server.
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// So it might be that the user wants to set a socket descriptor.
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return d->tcpSocket->setSocketDescriptor(socketDescriptor,
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newSocketState, openMode);
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}
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qintptr QLocalSocket::socketDescriptor() const
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{
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Q_D(const QLocalSocket);
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return d->tcpSocket->socketDescriptor();
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}
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qint64 QLocalSocket::readData(char *data, qint64 c)
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{
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Q_D(QLocalSocket);
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return d->tcpSocket->read(data, c);
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}
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qint64 QLocalSocket::writeData(const char *data, qint64 c)
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{
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Q_D(QLocalSocket);
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return d->tcpSocket->writeData(data, c);
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}
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void QLocalSocket::abort()
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{
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Q_D(QLocalSocket);
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d->tcpSocket->abort();
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}
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qint64 QLocalSocket::bytesAvailable() const
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{
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Q_D(const QLocalSocket);
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return QIODevice::bytesAvailable() + d->tcpSocket->bytesAvailable();
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}
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qint64 QLocalSocket::bytesToWrite() const
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{
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Q_D(const QLocalSocket);
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return d->tcpSocket->bytesToWrite();
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}
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bool QLocalSocket::canReadLine() const
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{
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Q_D(const QLocalSocket);
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return QIODevice::canReadLine() || d->tcpSocket->canReadLine();
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}
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void QLocalSocket::close()
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{
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Q_D(QLocalSocket);
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d->tcpSocket->close();
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d->serverName.clear();
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d->fullServerName.clear();
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QIODevice::close();
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}
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bool QLocalSocket::waitForBytesWritten(int msecs)
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{
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Q_D(QLocalSocket);
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return d->tcpSocket->waitForBytesWritten(msecs);
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}
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bool QLocalSocket::flush()
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{
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Q_D(QLocalSocket);
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return d->tcpSocket->flush();
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}
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void QLocalSocket::disconnectFromServer()
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{
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Q_D(QLocalSocket);
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d->tcpSocket->disconnectFromHost();
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}
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QLocalSocket::LocalSocketError QLocalSocket::error() const
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{
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Q_D(const QLocalSocket);
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switch (d->tcpSocket->error()) {
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case QAbstractSocket::ConnectionRefusedError:
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return QLocalSocket::ConnectionRefusedError;
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case QAbstractSocket::RemoteHostClosedError:
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return QLocalSocket::PeerClosedError;
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case QAbstractSocket::HostNotFoundError:
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return QLocalSocket::ServerNotFoundError;
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case QAbstractSocket::SocketAccessError:
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return QLocalSocket::SocketAccessError;
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case QAbstractSocket::SocketResourceError:
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return QLocalSocket::SocketResourceError;
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case QAbstractSocket::SocketTimeoutError:
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return QLocalSocket::SocketTimeoutError;
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case QAbstractSocket::DatagramTooLargeError:
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return QLocalSocket::DatagramTooLargeError;
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case QAbstractSocket::NetworkError:
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return QLocalSocket::ConnectionError;
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case QAbstractSocket::UnsupportedSocketOperationError:
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return QLocalSocket::UnsupportedSocketOperationError;
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case QAbstractSocket::UnknownSocketError:
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return QLocalSocket::UnknownSocketError;
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default:
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#if defined QLOCALSOCKET_DEBUG
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qWarning() << "QLocalSocket error not handled:" << d->tcpSocket->error();
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#endif
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break;
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}
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return UnknownSocketError;
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}
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bool QLocalSocket::isValid() const
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{
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Q_D(const QLocalSocket);
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return d->tcpSocket->isValid();
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}
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qint64 QLocalSocket::readBufferSize() const
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{
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Q_D(const QLocalSocket);
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return d->tcpSocket->readBufferSize();
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}
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void QLocalSocket::setReadBufferSize(qint64 size)
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{
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Q_D(QLocalSocket);
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d->tcpSocket->setReadBufferSize(size);
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}
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bool QLocalSocket::waitForConnected(int msec)
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{
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Q_D(QLocalSocket);
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if (state() != ConnectingState)
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return (state() == ConnectedState);
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return d->tcpSocket->waitForConnected(msec);
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}
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bool QLocalSocket::waitForDisconnected(int msecs)
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{
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Q_D(QLocalSocket);
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if (state() == UnconnectedState) {
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qWarning() << "QLocalSocket::waitForDisconnected() is not allowed in UnconnectedState";
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return false;
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}
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return (d->tcpSocket->waitForDisconnected(msecs));
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}
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bool QLocalSocket::waitForReadyRead(int msecs)
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{
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Q_D(QLocalSocket);
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if (state() == QLocalSocket::UnconnectedState)
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return false;
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return (d->tcpSocket->waitForReadyRead(msecs));
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}
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QT_END_NAMESPACE
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