[Nfd-dev] ndn dissector and TCP segments

[Dehart, John]

Here is a link to a snippet from the pcap file that is giving me problems.

https://www.arl.wustl.edu/~jdd/tcpdump.2000.pkts.pcap

If I run this through wireshark with the ndn-dissector from ndn-tools
version  0.6.2-ppa1~xenial (version on the NDN Testbed),
I get Lua Errors for several packets, for example Frame # 45.
[cid:55310570-F198-4DE8-A0F5-0ED3250D5632 at seas.wustl.edu]

Also, I thought wireshark used to display the NDN names in the Info field, but it is not doing this now.

Full discolosure: This pcap file was generated on ONL where we are still running NFD 0.6.1.
And for various reasons we have to continue running that version for a while longer.
I have tried processing it with wireshark there as well and have different problems.
For example, frames 1268, 1270 and 1271 are not processed properly.
[cid:0C52077F-118C-4999-92AF-BA4C77C771BF at seas.wustl.edu]
Any help is appreciated.

Thanks,
John


On Jan 25, 2019, at 10:13 PM, Junxiao Shi <shijunxiao at email.arizona.edu<mailto:shijunxiao at email.arizona.edu>> wrote:

Hi John

If you are having trouble with ndn.lua, can you attach the pcap file so others can reproduce the problem?

Yours, Junxiao

On Thu, Jan 24, 2019 at 3:27 PM Dehart, John <jdd at wustl.edu<mailto:jdd at wustl.edu>> wrote:

I am trying to use the ndn-dissector with wireshark on some NDN TCP flows.
Does the dissector have problems when an NDN packet spans multiple TCP segments
but those TCP segments do not one after the other? That is if another NDN packet, perhaps
an Interest going in the opposite direction comes between two TCP segments that need to
be joined to reassemble an NDN packet.

John


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