118 lines
4.4 KiB
C++
118 lines
4.4 KiB
C++
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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*
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* Copyright 2013 - 2020, nymea GmbH
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* Contact: contact@nymea.io
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*
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* This file is part of nymea.
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* This project including source code and documentation is protected by
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* copyright law, and remains the property of nymea GmbH. All rights, including
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* reproduction, publication, editing and translation, are reserved. The use of
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* this project is subject to the terms of a license agreement to be concluded
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* with nymea GmbH in accordance with the terms of use of nymea GmbH, available
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* under https://nymea.io/license
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*
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* GNU Lesser General Public License Usage
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* Alternatively, this project may be redistributed and/or modified under the
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* terms of the GNU Lesser General Public License as published by the Free
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* Software Foundation; version 3. This project is distributed in the hope that
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* it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this project. If not, see <https://www.gnu.org/licenses/>.
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*
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* For any further details and any questions please contact us under
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* contact@nymea.io or see our FAQ/Licensing Information on
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* https://nymea.io/license/faq
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*
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#ifndef COAP_H
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#define COAP_H
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#include <QObject>
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#include <QHostInfo>
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#include <QUdpSocket>
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#include <QHostAddress>
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#include <QLoggingCategory>
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#include <QPointer>
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#include <QQueue>
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#include "libnymea.h"
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#include "coaprequest.h"
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#include "coapreply.h"
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#include "coapobserveresource.h"
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/* Information about CoAP
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*
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* The Constrained Application Protocol (CoAP) : https://tools.ietf.org/html/rfc7252
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* Blockwise transfers in CoAP : https://tools.ietf.org/html/draft-ietf-core-block-18
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* Constrained RESTful Environments (CoRE) Link Format : http://tools.ietf.org/html/rfc6690
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* Observing Resources in CoAP : https://tools.ietf.org/html/rfc7641
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*
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*/
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class LIBNYMEA_EXPORT Coap : public QObject
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{
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Q_OBJECT
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public:
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Coap(QObject *parent = nullptr, const quint16 &port = 5683);
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CoapReply *ping(const CoapRequest &request);
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CoapReply *get(const CoapRequest &request);
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CoapReply *put(const CoapRequest &request, const QByteArray &data = QByteArray());
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CoapReply *post(const CoapRequest &request, const QByteArray &data = QByteArray());
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CoapReply *deleteResource(const CoapRequest &request);
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// Notifications for observable resources
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CoapReply *enableResourceNotifications(const CoapRequest &request);
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CoapReply *disableNotifications(const CoapRequest &request);
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private:
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QUdpSocket *m_socket;
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QPointer<CoapReply> m_reply;
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QQueue<CoapReply *> m_replyQueue;
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QHash<int, CoapReply *> m_runningHostLookups;
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QHash<QByteArray, CoapObserveResource> m_observeResources; // token | resource
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// Blockwise notifications
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QPointer<CoapReply> m_observerReply;
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QHash<CoapReply *, CoapObserveResource> m_observeReplyResource; // observe reply | resource
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QHash<CoapReply *, int> m_observeBlockwise; // observe reply | observe nr.
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void lookupHost();
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void sendRequest(CoapReply *reply, const bool &lookedUp = false);
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void sendData(const QHostAddress &hostAddress, const quint16 &port, const QByteArray &data);
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void sendCoapPdu(const QHostAddress &address, const quint16 &port, const CoapPdu &pdu);
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void processResponse(const CoapPdu &pdu, const QHostAddress &address, const quint16 &port);
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void processIdBasedResponse(CoapReply *reply, const CoapPdu &pdu);
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void processTokenBasedResponse(CoapReply *reply, const CoapPdu &pdu);
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void processNotification(const CoapPdu &pdu, const QHostAddress &address, const quint16 &port);
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void processBlock1Response(CoapReply *reply, const CoapPdu &pdu);
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void processBlock2Response(CoapReply *reply, const CoapPdu &pdu);
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void processBlock2Notification(CoapReply *reply, const CoapPdu &pdu);
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signals:
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void replyFinished(CoapReply *reply);
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void notificationReceived(const CoapObserveResource &resource, const int ¬ificationNumber, const QByteArray &payload);
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private slots:
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void hostLookupFinished(const QHostInfo &hostInfo);
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void onReadyRead();
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void onReplyTimeout();
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void onReplyFinished();
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};
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#endif // COAP_H
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