[Ndn-interest] Large file transfer

Cenk Gündoğan list-ndn at cgundogan.de
Tue Oct 11 00:19:21 PDT 2016

Hello Thiago,

could it be that the face is pointing to a TCP socket instead?
Did you see TCP traffic with tcpdump? I never used ndnfs, but after
glancing into the code, it seems that ndnfs is (capable of)
creating a face on the server-side with an underlying TCP socket.
This could explain why you didn't see UDP traffic, although the files
get synced (?)


On 16-10-10 20:11:54, Thiago Teixeira wrote:
> Hi folks,
> I am experimenting with mobility in NDN and want to evaluate the performance and reliability under intermittent/disconnected networks. NDN-Ping and NDN-Chunks run fine; however, ndnchunks handles single small files (data packet less than 8800 B, if I'm not mistaken).
> I've also tried the NDN file system app (NDNFS) with file sizes 10MB, 100MB, and 1GB. The files are successfully sync'ed with the end host over a three hop wireless network, but when I run tcpdump to monitor the traffic in the network, I don't see any UDP packets during the sync (I do see UDP packets when I run ndnchunks). I can see mDNS packets.
> Can you explain if this is the right behavior, please?
> I could only find this post from Aug-2015 regarding packet fragmentation- http://www.lists.cs.ucla.edu/pipermail/ndn-interest/2015-August/000824.html
> Thanks in advance,
> Thiago

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Cenk Gündoğan

Hamburg University of Applied Sciences
Dept. of Computer Science / Internet Technologies Group
Berliner Tor 7, 20099 Hamburg, Germany
Fon: +49 40 42875 - 8426
Mail: cenk.guendogan at haw-hamburg.de
Web: https://www.inet.haw-hamburg.de/
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