1/****************************************************************************
2**
3** Copyright (C) 2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com>
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtWebChannel module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:BSD$
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17** BSD License Usage
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22** modification, are permitted provided that the following conditions are
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24** * Redistributions of source code must retain the above copyright
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49****************************************************************************/
50
51#include "chatserver.h"
52
53#include <QDebug>
54#include <QTime>
55#include <QTimer>
56
57ChatServer::ChatServer(QObject *parent)
58 : QObject(parent)
59{
60 QTimer *t = new QTimer(this);
61 connect(sender: t, signal: &QTimer::timeout, receiver: this, slot: &ChatServer::sendKeepAlive);
62 t->start(msec: 10000);
63
64 m_keepAliveCheckTimer = new QTimer(this);
65 m_keepAliveCheckTimer->setSingleShot(true);
66 m_keepAliveCheckTimer->setInterval(2000);
67 connect(sender: m_keepAliveCheckTimer, signal: &QTimer::timeout, receiver: this, slot: &ChatServer::checkKeepAliveResponses);
68}
69
70ChatServer::~ChatServer()
71{}
72
73
74bool ChatServer::login(const QString &userName)
75{
76 //stop keepAliveCheck, when a new user logged in
77 if (m_keepAliveCheckTimer->isActive()) {
78 m_keepAliveCheckTimer->stop();
79 m_stillAliveUsers.clear();
80 }
81
82 if (m_userList.contains(str: userName)) {
83 return false;
84 }
85
86 qDebug() << "User logged in:" << userName;
87 m_userList.append(t: userName);
88 m_userList.sort();
89 emit userListChanged();
90 emit userCountChanged();
91 return true;
92}
93
94bool ChatServer::logout(const QString &userName)
95{
96 if (!m_userList.contains(str: userName)) {
97 return false;
98 } else {
99 m_userList.removeAt(i: m_userList.indexOf(t: userName));
100 emit userListChanged();
101 emit userCountChanged();
102 return true;
103 }
104}
105
106bool ChatServer::sendMessage(const QString &user, const QString &msg)
107{
108 if (m_userList.contains(str: user)) {
109 emit newMessage(time: QTime::currentTime().toString(format: "HH:mm:ss"), user, msg);
110 return true;
111 } else {
112 return false;
113 }
114}
115
116void ChatServer::sendKeepAlive()
117{
118 emit keepAlive();
119 m_keepAliveCheckTimer->start();
120}
121
122void ChatServer::checkKeepAliveResponses()
123{
124 qDebug() << "Keep Alive Check" << m_stillAliveUsers;
125 m_userList = m_stillAliveUsers;
126 m_stillAliveUsers.clear();
127 m_userList.sort();
128 emit userListChanged();
129}
130
131void ChatServer::keepAliveResponse(const QString &user)
132{
133 m_stillAliveUsers.append(t: user);
134}
135
136
137QStringList ChatServer::userList() const
138{
139 return m_userList;
140}
141

source code of qtwebchannel/examples/webchannel/chatserver-cpp/chatserver.cpp