openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
 
 
 
 
 
 

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#include "selfdrive/ui/qt/request_repeater.h"
RequestRepeater::RequestRepeater(QObject *parent, const QString &requestURL, const QString &cacheKey,
int period, bool while_onroad) : HttpRequest(parent) {
timer = new QTimer(this);
timer->setTimerType(Qt::VeryCoarseTimer);
QObject::connect(timer, &QTimer::timeout, [=]() {
if ((!uiState()->scene.started || while_onroad) && uiState()->awake && !active()) {
sendRequest(requestURL);
}
});
timer->start(period * 1000);
if (!cacheKey.isEmpty()) {
prevResp = QString::fromStdString(params.get(cacheKey.toStdString()));
if (!prevResp.isEmpty()) {
QTimer::singleShot(500, [=]() { emit requestDone(prevResp, true, QNetworkReply::NoError); });
}
QObject::connect(this, &HttpRequest::requestDone, [=](const QString &resp, bool success) {
if (success && resp != prevResp) {
params.put(cacheKey.toStdString(), resp.toStdString());
prevResp = resp;
}
});
}
}