Wireless Wave

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How to find a specific header in packet in NS-3

27 Aug 2010

You can scan through headers like this:



PacketMetadata::ItemIterator metadataIterator = copy->BeginItem();
PacketMetadata::Item item;
while (metadataIterator.HasNext())
{
item = metadataIterator.Next();
NS_LOG_FUNCTION("item name: " << item.tid.GetName());
if(item.tid.GetName() == "ns3::Ipv4Header")
{
NS_LOG_DEBUG("Header Found");
m_isIpv4HeaderFound = true;
break;
}
}

In above code I tried to find Ipv4Header

And it is possible to access it like:

if (m_isIpv4HeaderFound) { NS_LOG_DEBUG("Header Found"); Callback constructor = item.tid.GetConstructor();

NS_ASSERT(!constructor.IsNull()); ObjectBase *instance = constructor(); NS_ASSERT(instance != 0); Ipv4Header *ipv4Header = dynamic_cast (instance); NS_ASSERT(ipv4Header != 0); ipv4Header->Deserialize(item.current); delete ipv4Header; }

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