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src/qmqtt_websocketiodevice.cpp 2.89 KB
210d2652   Steven de Ridder   Initial commit.
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  /* ****************************************************************************
   * Copyright 2019 Open Systems Development BV                                 *
   *                                                                            *
   * Permission is hereby granted, free of charge, to any person obtaining a    *
   * copy of this software and associated documentation files (the "Software"), *
   * to deal in the Software without restriction, including without limitation  *
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,   *
   * and/or sell copies of the Software, and to permit persons to whom the      *
   * Software is furnished to do so, subject to the following conditions:       *
   *                                                                            *
   * The above copyright notice and this permission notice shall be included in *
   * all copies or substantial portions of the Software.                        *
   *                                                                            *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   *
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    *
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING    *
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER        *
   * DEALINGS IN THE SOFTWARE.                                                  *
   * ***************************************************************************/
  #ifdef QT_WEBSOCKETS_LIB
  
  #include "qmqtt_websocketiodevice_p.h"
  
  #include <QWebSocket>
  
  QMQTT::WebSocketIODevice::WebSocketIODevice(QWebSocket *socket, QObject *parent)
      : QIODevice(parent)
      , _webSocket(socket)
  {
      connect(_webSocket, &QWebSocket::bytesWritten, this, &WebSocketIODevice::bytesWritten);
      connect(_webSocket, &QWebSocket::binaryMessageReceived,
              this, &WebSocketIODevice::binaryMessageReceived);
  }
  
  bool QMQTT::WebSocketIODevice::connectToHost(const QNetworkRequest &request)
  {
      _webSocket->open(request);
      return QIODevice::open(QIODevice::ReadWrite);
  }
  
  qint64 QMQTT::WebSocketIODevice::bytesAvailable() const
  {
      return _buffer.count();
  }
  
  void QMQTT::WebSocketIODevice::binaryMessageReceived(const QByteArray &frame)
  {
      _buffer.append(frame);
      emit readyRead();
  }
  
  qint64 QMQTT::WebSocketIODevice::readData(char *data, qint64 maxSize)
  {
      int size = qMin(static_cast<int>(maxSize), _buffer.count());
      for (int i=0; i<size; ++ i)
          data[i] = _buffer[i];
      _buffer.remove(0, size);
      return size;
  }
  
  qint64 QMQTT::WebSocketIODevice::writeData(const char *data, qint64 maxSize)
  {
      QByteArray d(data, static_cast<int>(maxSize));
      return _webSocket->sendBinaryMessage(d);
  }
  
  #endif // QT_WEBSOCKETS_LIB