void
UdpFace::closeIfIdle()
{
// Face can be switched from on-demand to non-on-demand mode
// (non-on-demand -> on-demand transition is not allowed)
if (this->getPersistency() == ndn::nfd::FACE_PERSISTENCY_ON_DEMAND) {
if (!hasBeenUsedRecently()) {
NFD_LOG_FACE_INFO("Closing for inactivity");
close();
// #1718 manual test: uncomment, run NFD in valgrind, send in a UDP packet
// expect read-after-free error and crash
// getGlobalIoService().post([this] {
// NFD_LOG_FACE_ERROR("Remaining references: " << this->shared_from_this().use_count());
// });
}
else {
resetRecentUsage();
m_lastIdleCheck = time::steady_clock::now();
m_closeIfIdleEvent = scheduler::schedule(m_idleTimeout, bind(&UdpFace::closeIfIdle, this));
}
}
// else do nothing and do not reschedule the event
}
void
UnicastUdpTransport::scheduleClosureWhenIdle()
{
m_closeIfIdleEvent = scheduler::schedule(m_idleTimeout, [this] {
if (!hasBeenUsedRecently()) {
NFD_LOG_FACE_INFO("Closing due to inactivity");
this->close();
}
else {
resetRecentUsage();
scheduleClosureWhenIdle();
}
});
setExpirationTime(time::steady_clock::now() + m_idleTimeout);
}
ndn::nfd::FaceStatus
UdpFace::getFaceStatus() const
{
auto status = DatagramFace::getFaceStatus();
if (this->getPersistency() == ndn::nfd::FACE_PERSISTENCY_ON_DEMAND) {
time::milliseconds left = m_idleTimeout;
left -= time::duration_cast<time::milliseconds>(time::steady_clock::now() - m_lastIdleCheck);
if (left < time::milliseconds::zero())
left = time::milliseconds::zero();
if (hasBeenUsedRecently())
left += m_idleTimeout;
status.setExpirationPeriod(left);
}
return status;
}