1/****************************************************************************
2**
3** Copyright (C) 2016 Kurt Pattyn <pattyn.kurt@gmail.com>.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtWebSockets module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:BSD$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** BSD License Usage
18** Alternatively, you may use this file under the terms of the BSD license
19** as follows:
20**
21** "Redistribution and use in source and binary forms, with or without
22** modification, are permitted provided that the following conditions are
23** met:
24** * Redistributions of source code must retain the above copyright
25** notice, this list of conditions and the following disclaimer.
26** * Redistributions in binary form must reproduce the above copyright
27** notice, this list of conditions and the following disclaimer in
28** the documentation and/or other materials provided with the
29** distribution.
30** * Neither the name of The Qt Company Ltd nor the names of its
31** contributors may be used to endorse or promote products derived
32** from this software without specific prior written permission.
33**
34**
35** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
45** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
46**
47** $QT_END_LICENSE$
48**
49****************************************************************************/
50#include "chatserver.h"
51
52#include <QtWebSockets>
53#include <QtCore>
54
55#include <cstdio>
56using namespace std;
57
58QT_USE_NAMESPACE
59
60static QString getIdentifier(QWebSocket *peer)
61{
62 return QStringLiteral("%1:%2").arg(args: peer->peerAddress().toString(),
63 args: QString::number(peer->peerPort()));
64}
65
66//! [constructor]
67ChatServer::ChatServer(quint16 port, QObject *parent) :
68 QObject(parent),
69 m_pWebSocketServer(new QWebSocketServer(QStringLiteral("Chat Server"),
70 QWebSocketServer::NonSecureMode,
71 this))
72{
73 if (m_pWebSocketServer->listen(address: QHostAddress::Any, port))
74 {
75 QTextStream(stdout) << "Chat Server listening on port " << port << '\n';
76 connect(sender: m_pWebSocketServer, signal: &QWebSocketServer::newConnection,
77 receiver: this, slot: &ChatServer::onNewConnection);
78 }
79}
80
81ChatServer::~ChatServer()
82{
83 m_pWebSocketServer->close();
84}
85//! [constructor]
86
87//! [onNewConnection]
88void ChatServer::onNewConnection()
89{
90 auto pSocket = m_pWebSocketServer->nextPendingConnection();
91 QTextStream(stdout) << getIdentifier(peer: pSocket) << " connected!\n";
92 pSocket->setParent(this);
93
94 connect(sender: pSocket, signal: &QWebSocket::textMessageReceived,
95 receiver: this, slot: &ChatServer::processMessage);
96 connect(sender: pSocket, signal: &QWebSocket::disconnected,
97 receiver: this, slot: &ChatServer::socketDisconnected);
98
99 m_clients << pSocket;
100}
101//! [onNewConnection]
102
103//! [processMessage]
104void ChatServer::processMessage(const QString &message)
105{
106 QWebSocket *pSender = qobject_cast<QWebSocket *>(object: sender());
107 for (QWebSocket *pClient : qAsConst(t&: m_clients)) {
108 if (pClient != pSender) //don't echo message back to sender
109 pClient->sendTextMessage(message);
110 }
111}
112//! [processMessage]
113
114//! [socketDisconnected]
115void ChatServer::socketDisconnected()
116{
117 QWebSocket *pClient = qobject_cast<QWebSocket *>(object: sender());
118 QTextStream(stdout) << getIdentifier(peer: pClient) << " disconnected!\n";
119 if (pClient)
120 {
121 m_clients.removeAll(t: pClient);
122 pClient->deleteLater();
123 }
124}
125//! [socketDisconnected]
126

source code of qtwebsockets/examples/websockets/simplechat/chatserver.cpp