unsigned int Subscription::getPingTimestamp()
{
RcfSessionPtr rcfSessionPtr;
{
RecursiveLock lock(mMutex);
rcfSessionPtr = mRcfSessionWeakPtr.lock();
}
if (rcfSessionPtr)
{
return rcfSessionPtr->getPingTimestamp();
}
return 0;
}
void MulticastClientTransport::dropIdleTransports()
{
bringInNewTransports();
Lock lock(mClientTransportsMutex);
bool needToRemove = false;
ClientTransportList::iterator iter;
for (iter = mClientTransports.begin(); iter != mClientTransports.end(); ++iter)
{
RCF::ClientTransport & transport = ***iter;
RcfSessionWeakPtr rcfSessionWeakPtr = transport.getRcfSession();
if ( rcfSessionWeakPtr == RcfSessionWeakPtr() )
{
// HTTP/HTTPS connections do not hold on to the RcfSession and can't receive pings.
continue;
}
RcfSessionPtr rcfSessionPtr = rcfSessionWeakPtr.lock();
if (!rcfSessionPtr)
{
RCF_LOG_2() << "Dropping subscription. Subscriber has closed connection.";
iter->reset();
needToRemove = true;
}
else
{
boost::uint32_t pingIntervalMs = rcfSessionPtr->getPingIntervalMs();
if (pingIntervalMs)
{
RCF::Timer pingTimer( rcfSessionPtr->getPingTimestamp() );
if (pingTimer.elapsed(5000 + 2*pingIntervalMs))
{
std::string subscriberUrl = rcfSessionPtr->getClientAddress().string();
RCF_LOG_2()(subscriberUrl)(pingIntervalMs)
<< "Dropping subscription. Subscriber has not sent pings within the expected ping interval.";
iter->reset();
needToRemove = true;
}
}
}
}
if (needToRemove)
{
eraseRemove(mClientTransports, ClientTransportAutoPtrPtr());
}
}
void SubscriptionService::harvestExpiredSubscriptions()
{
// Kill off subscriptions that haven't received any recent pings.
Subscriptions subsToDrop;
{
Lock lock(mSubscriptionsMutex);
Subscriptions::iterator iter;
for (iter = mSubscriptions.begin(); iter != mSubscriptions.end(); ++iter)
{
SubscriptionPtr subPtr = iter->lock();
if (subPtr)
{
Subscription & sub = * subPtr;
RecursiveLock lock(sub.mMutex);
RcfSessionPtr sessionPtr = sub.mRcfSessionWeakPtr.lock();
if (!sessionPtr)
{
RCF_LOG_2()(sub.mPublisherUrl)(sub.mTopic) << "Dropping subscription. Publisher has closed connection.";
subsToDrop.insert(*iter);
}
else if (sub.mPingsEnabled)
{
boost::uint32_t pingIntervalMs = sub.mPingIntervalMs;
if (pingIntervalMs)
{
RCF::Timer pingTimer(sessionPtr->getPingTimestamp());
if (pingTimer.elapsed(5000 + 2*pingIntervalMs))
{
RCF_LOG_2()(sub.mPublisherUrl)(sub.mTopic)(sub.mPingIntervalMs) << "Dropping subscription. Publisher has not sent pings.";
subsToDrop.insert(*iter);
}
}
}
}
}
for (iter = subsToDrop.begin(); iter != subsToDrop.end(); ++iter)
{
mSubscriptions.erase(*iter);
}
}
subsToDrop.clear();
}