1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the documentation of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:BSD$
9 ** You may use this file under the terms of the BSD license as follows:
11 ** "Redistribution and use in source and binary forms, with or without
12 ** modification, are permitted provided that the following conditions are
14 ** * Redistributions of source code must retain the above copyright
15 ** notice, this list of conditions and the following disclaimer.
16 ** * Redistributions in binary form must reproduce the above copyright
17 ** notice, this list of conditions and the following disclaimer in
18 ** the documentation and/or other materials provided with the
20 ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
21 ** the names of its contributors may be used to endorse or promote
22 ** products derived from this software without specific prior written
25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
39 ****************************************************************************/
42 // To find the IP address of qt.nokia.com
43 QHostInfo::lookupHost("qt.nokia.com",
44 this, SLOT(printResults(QHostInfo)));
46 // To find the host name for 4.2.2.1
47 QHostInfo::lookupHost("4.2.2.1",
48 this, SLOT(printResults(QHostInfo)));
53 QHostInfo info = QHostInfo::fromName("qt.nokia.com");
58 QHostInfo::lookupHost("www.kde.org",
59 this, SLOT(lookedUp(QHostInfo)));
64 void MyWidget::lookedUp(const QHostInfo &host)
66 if (host.error() != QHostInfo::NoError) {
67 qDebug() << "Lookup failed:" << host.errorString();
71 foreach (const QHostAddress &address, host.addresses())
72 qDebug() << "Found address:" << address.toString();
78 QHostInfo::lookupHost("4.2.2.1",
79 this, SLOT(lookedUp(QHostInfo)));
86 if (!info.addresses().isEmpty()) {
87 QHostAddress address = info.addresses().first();
88 // use the first IP address