utils+apps: Fix a bug in ndn::RttEstimator
In the constructor of ndn::RttEstimator, the code tries to set
m_currentEstimatedRtt to m_initialEstimatedRtt using the ConstructSelf()
technique. However, it doesn't take effect at this point since
ndn::RttEstimator hasn't defined GetInstanceTypeId().
According to the manual
(http://www.nsnam.org/docs/manual/html/attributes.html#initialization-order),
"the object and all its derived classes must also implement a virtual
TypeId GetInstanceTypeId (void) const; method. Otherwise the
ObjectBase::ConstructSelf () will not be able to read the attributes".
GetInstanceTypeId() was defined in the original RttEstimator but was
somehow lost during the port to ndnSIM.
closes #40
diff --git a/utils/ndn-rtt-mean-deviation.cc b/utils/ndn-rtt-mean-deviation.cc
index c05ad75..88cebaa 100644
--- a/utils/ndn-rtt-mean-deviation.cc
+++ b/utils/ndn-rtt-mean-deviation.cc
@@ -74,6 +74,12 @@
NS_LOG_FUNCTION (this);
}
+TypeId
+RttMeanDeviation::GetInstanceTypeId (void) const
+{
+ return GetTypeId ();
+}
+
void RttMeanDeviation::Measurement (Time m)
{
NS_LOG_FUNCTION (this << m);