chatclient.cpp Example File

btchat/chatclient.cpp
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 #include "chatclient.h"

 #include <QtCore/qmetaobject.h>

 ChatClient::ChatClient(QObject *parent)
     :   QObject(parent)
 {
 }

 ChatClient::~ChatClient()
 {
     stopClient();
 }

 void ChatClient::startClient(const QBluetoothServiceInfo &remoteService)
 {
     if (socket)
         return;

     // Connect to service
     socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol);
     qDebug() << "Create socket";
     socket->connectToService(remoteService);
     qDebug() << "ConnectToService done";

     connect(socket, &QBluetoothSocket::readyRead, this, &ChatClient::readSocket);
     connect(socket, &QBluetoothSocket::connected, this, QOverload<>::of(&ChatClient::connected));
     connect(socket, &QBluetoothSocket::disconnected, this, &ChatClient::disconnected);
     connect(socket, QOverload<QBluetoothSocket::SocketError>::of(&QBluetoothSocket::error),
             this, &ChatClient::onSocketErrorOccurred);

 }

 void ChatClient::stopClient()
 {
     delete socket;
     socket = nullptr;
 }

 void ChatClient::readSocket()
 {
     if (!socket)
         return;

     while (socket->canReadLine()) {
         QByteArray line = socket->readLine();
         emit messageReceived(socket->peerName(),
                              QString::fromUtf8(line.constData(), line.length()));
     }
 }

 void ChatClient::sendMessage(const QString &message)
 {
     QByteArray text = message.toUtf8() + '\n';
     socket->write(text);
 }

 void ChatClient::onSocketErrorOccurred(QBluetoothSocket::SocketError error)
 {
     if (error == QBluetoothSocket::NoSocketError)
         return;

     QMetaEnum metaEnum = QMetaEnum::fromType<QBluetoothSocket::SocketError>();
     QString errorString = socket->peerName() + QLatin1Char(' ')
             + metaEnum.valueToKey(error) + QLatin1String(" occurred");

     emit socketErrorOccurred(errorString);
 }

 void ChatClient::connected()
 {
     emit connected(socket->peerName());
 }