Modify traces of packets in ns-3.29

[Andrea Tricarico]

Hi, I need to simulate a network in which the clients send messages to the servers passing from some intermediate nodes. 

For now I've just write a draft but I already have problems with the tracing system. 

For each packet received from a node I have a trace like this:

r 2.02337 /NodeList/2/DeviceList/0/$ns3::PointToPointNetDevice/MacRx ns3::PppHeader (Point-to-Point Protocol: IP (0x0021)) ns3::Ipv4Header (tos 0x0 DSCP Default ECN Not-ECT ttl 63 id 0 protocol 17 offset (bytes) 0 flags [none] length: 1052 10.1.1.1 > 10.1.4.2) ns3::UdpHeader (length: 1032 49153 > 9) Payload (size=1024)

Bu this trace gives me only the node that have received the packet, the source of the packet and its final destination.

I need the following information: the nodes that sended the packet to this node and the node who will receive this packet from me.

In my simulation the situation is like this:

Client - Node1 - Node2 - Node3 - Server

That trace just says that the packet is received from Node2, the sender is 10.1.1 (the client) and the destination is 10.1.4 (the server). How can I retrieve some the information like Node1 sent this packet to Node2 and Node2 will send it to Node3?

I attached to this post the code of the simulation.

Can someone help me? Thank you very much.