modification in Blackhole attack patch

[Gopal Rawat]

Hi all,

I have used the patch for blackhole attack for a VANET scenario and it works fine on ns3.30.1. I am interested in achieving alternate packet drop so i tried modifying the aodv-routing-protocol.cc ( attached is the modified file).  I am using a  variable flag for the same. I get the following error after it builds successfully.

assert failed. cond="socket", file=../src/aodv/model/aodv-routing-protocol.cc, line=1541
terminate called without an active exception
Command ['/home/gsr/ns-allinone-3.30.1/ns-3.30.1/build/scratch/blackhole', '--RngRun=3'] terminated with signal SIGIOT. Run it under a debugger to get more information (./waf --run <program> --command-template="gdb --args %s <args>").

When i look for the details , i get to the point where i understand that the issue is here ;

 Ptr<Socket> socket = FindSocketWithInterfaceAddress (toDst.GetInterface ());
 NS_ASSERT (socket);

 

  in SendReplyByIntermediateNode function. I am really lost after this. Would really appreciate any help/suggestions.

[Gopal Rawat]

Update:

I have  managed to get rid of the error and ensure that the malicious node drops packet alternatively. The node successfully drops packet for first time and for second time when it doesn't drops packet , the packet gets dropped upon forwarding ( because no route to forward ). So i am not sure where do i need to make the changes now , in order to ensure that the packet is forwarded for second time ( like normal operation ) and dropped for first time and so on.

Attached are the modified file and sample program used.

Any suggestions on how to proceed from here ?

regards,

Gopal

[yadavdh...@gmail.com]

Dear sir

Greetings

I am working on Blackhole attack. Please share me the patches of blackhole attack for ns3.30.1

Thanks sir