chatserver.cpp Example File

chatserver-cpp/chatserver.cpp
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#include "chatserver.h" #include <QDebug> #include <QTime> #include <QTimer> ChatServer::ChatServer(QObject *parent) : QObject(parent) { QTimer *t = new QTimer(this); connect(t, &QTimer::timeout, this, &ChatServer::sendKeepAlive); t->start(10000); m_keepAliveCheckTimer = new QTimer(this); m_keepAliveCheckTimer->setSingleShot(true); m_keepAliveCheckTimer->setInterval(2000); connect(m_keepAliveCheckTimer, &QTimer::timeout, this, &ChatServer::checkKeepAliveResponses); } ChatServer::~ChatServer() {} bool ChatServer::login(const QString &userName) { //stop keepAliveCheck, when a new user logged in if (m_keepAliveCheckTimer->isActive()) { m_keepAliveCheckTimer->stop(); m_stillAliveUsers.clear(); } if (m_userList.contains(userName)) { return false; } qDebug() << "User logged in:" << userName; m_userList.append(userName); m_userList.sort(); emit userListChanged(); emit userCountChanged(); return true; } bool ChatServer::logout(const QString &userName) { if (!m_userList.contains(userName)) { return false; } else { m_userList.removeAt(m_userList.indexOf(userName)); emit userListChanged(); emit userCountChanged(); return true; } } bool ChatServer::sendMessage(const QString &user, const QString &msg) { if (m_userList.contains(user)) { emit newMessage(QTime::currentTime().toString("HH:mm:ss"), user, msg); return true; } else { return false; } } void ChatServer::sendKeepAlive() { emit keepAlive(); m_keepAliveCheckTimer->start(); } void ChatServer::checkKeepAliveResponses() { qDebug() << "Keep Alive Check" << m_stillAliveUsers; m_userList = m_stillAliveUsers; m_stillAliveUsers.clear(); m_userList.sort(); emit userListChanged(); } void ChatServer::keepAliveResponse(const QString &user) { m_stillAliveUsers.append(user); } QStringList ChatServer::userList() const { return m_userList; }