void CoapNetworkAccessManager::processNotification(CoapTarget *target, const CoapPdu &pdu, const QHostAddress &address, const quint16 &port)
{
qCDebug(dcCoap) << "<--- Notification" << address << pdu;
// Check if this target has an observation resource for this token
if (!target->hasObservationResource(pdu.token())) {
qCWarning(dcCoap()) << "No observe resource for this notification.";
return;
}
CoapObserveResource resource = target->getObservationResource(pdu.token());
// check if it is a blockwise notification
if (pdu.hasOption(CoapOption::Block2)) {
// First part of the blocked notification
// respond with ACK
CoapPdu responsePdu;
responsePdu.setMessageType(CoapPdu::Acknowledgement);
responsePdu.setStatusCode(CoapPdu::Empty);
responsePdu.setMessageId(pdu.messageId());
responsePdu.setToken(pdu.token());
qCDebug(dcCoap) << "---> Notification:" << address << responsePdu;
sendCoapPdu(address, port, responsePdu);
// create reply for blockwise transfere
if (target->hasRunningObservationReply()) {
CoapReply *oldReply = target->currentObservationReply();
oldReply->deleteLater();
target->removeReply(oldReply);
}
CoapReply *reply = new CoapReply(CoapRequest(resource.url()), this);
reply->setRequestMethod(CoapPdu::Get);
reply->appendPayloadData(pdu.payload());
// Lets store the observation number
int notificationNumber = 0;
foreach (const CoapOption &option, pdu.options()) {
if (option.option() == CoapOption::Observe) {
notificationNumber = option.data().toHex().toInt(0, 16);
}
}
target->setCurrentObservationReply(reply);
m_observeBlockwise.insert(reply, notificationNumber);
connect(reply, &CoapReply::timeout, this, &CoapNetworkAccessManager::onReplyTimeout);
connect(reply, &CoapReply::finished, this, &CoapNetworkAccessManager::onReplyFinished);
CoapPdu pdu;
pdu.setMessageType(reply->request().messageType());
pdu.setStatusCode(reply->requestMethod());
pdu.createMessageId();
pdu.createToken();
// Add the options in correct order
// Option number 3
pdu.addOption(CoapOption::UriHost, reply->request().url().host().toUtf8());
QStringList urlTokens = reply->request().url().path().split("/");
urlTokens.removeAll(QString());
// Option number 11
foreach (const QString &token, urlTokens)
pdu.addOption(CoapOption::UriPath, token.toUtf8());
// Option number 15
if (reply->request().url().hasQuery())
pdu.addOption(CoapOption::UriQuery, reply->request().url().query().toUtf8());
// Option number 23
pdu.addOption(CoapOption::Block2, CoapPduBlock::createBlock(1, 2, true));
QByteArray pduData = pdu.pack();
reply->setRequestData(pduData);
reply->setHostAddress(address);
reply->setPort(port);
reply->m_timer->start();
qCDebug(dcCoap) << "---> Notification" << address << pdu;
sendData(address, port, pduData);
} else {
/*! Constructs a copy of the given \a other \l{CoapObserveResource}. */
CoapObserveResource::CoapObserveResource(const CoapObserveResource &other)
{
m_url = other.url();
m_token = other.token();
}
