[ndnSIM] Question about updating name prefix list of the routers

[Anil Jangam]

The following change as suggested by Junxiao stopped the SEGABRT.

109   // Schedule the new prefis registration at 100 sec.
110   //Simulator::Schedule(Seconds(100.0), advertise, nodes.Get(1));
111   Simulator::ScheduleWithContext(nodes.Get(1)->GetId(), Seconds(100.0),
advertise, nodes.Get(1));
112

/anil.



On Sun, Jun 11, 2017 at 1:33 PM, Anil Jangam <anilj.mailing at gmail.com>
wrote:

> Hi Junxiao,
>
> Yes, this is what I am doing from my example.
>
>  93   // Install NLSR Controller on Node-1.
>  94   NS_LOG_INFO ("Installing NLSR Controller application on all nodes");
>  95   ndn::AppHelper nlsrcHelper ("ns3::ndn::NlsrcApp");
>  96   nlsrcHelper.Install(nodes);
>  97
>
> 109   // Schedule the new prefis registration at 100 sec.
> 110   Simulator::Schedule(Seconds(100.0), advertise, nodes.Get(1));
> 111
>
> I referred to the example given here: https://github.com/
> named-data/ndnSIM/blob/master/examples/ndn-simple-with-link-
> failure.cpp#L95
>
> I am explicitly selecting the node 1 to schedule this event on; but not
> sure why it is returning -1 at runtime. Do you still think '
> ns3::Simultor::ScheduleWithContext' is the correct way to go?
>
> /anil.
>
>
>
> On Sun, Jun 11, 2017 at 11:50 AM, Junxiao Shi <
> shijunxiao at email.arizona.edu> wrote:
>
>> Hi Anil
>>
>> The log indicates some code is calling ns3::NodeList::GetNode(-1), but -1
>> is obviously not a valid NodeId.
>> I guess this invalid NodeId comes from ns3::Simulator::GetContext(),
>> which usually returns the current NodeId on which an event is scheduled.
>> However, some code (most likely in main function or initialization
>> procedure) has scheduled an event without context, so that
>> ns3::Simulator::GetContext() is returning -1.
>> You may search for calls to ns3::Simulator::Schedule and replace them
>> with ns3::Simultor::ScheduleWithContext. The context value should
>> indicate which node the event should be happening.
>>
>> Yours, Junxiao
>>
>> On Jun 11, 2017 10:35, "Anil Jangam" <anilj.mailing at gmail.com> wrote:
>>
>> Hi All,
>>
>> Mahsa, Sabet, How have you solved this issue of SIGABRT?
>>
>> I converted the "nlsrc" into a a ndn::Application instance and installed
>> it on each of the nodes. In my simulation example, I am scheduling a new
>> prefix injection (at 100.0 sec) from a node.
>>
>> I see that experiment is running and at time 100 secs  into simulation,
>> its crashing. I am attaching the stack trace for more details. Can you help
>> me know what wrong here?
>>
>> Let me know if you need additional info.
>>
>> /anil.
>>
>>
>
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