[Nfd-dev] UDP face not being created to client end host

[Junxiao Shi]

Hi John

Then this isn’t a malformed packet problem.
It’s probably a socket or file descriptor problem, but I’m unfamiliar with that part.

Yours, Junxiao

> On Aug 3, 2017, at 1:33 PM, Dehart, John <jdd at wustl.edu> wrote:
> 
> 
> OK. I’ll give that a try, but just to add to the information, i can use that same end
> host and successfully connect to other Testbed nodes with UDP.
> All testbed nodes are running the same version.
> 
> John
> 
>> On Aug 3, 2017, at 3:30 PM, Junxiao Shi <shijunxiao at email.arizona.edu> wrote:
>> 
>> Hi John
>> 
>> If the end host transmits malformed NDNLP packets (as perceived by the router’s NFD version), the router would drop those packets in UdpChannel and would not create faces.
>> Given your end host has a different version, this is possibly the cause. Please try again with an end host that has same version as the router.
>> 
>> Yours, Junxiao
>> 
>>> On Aug 3, 2017, at 1:24 PM, Dehart, John <jdd at wustl.edu> wrote:
>>> 
>>> 
>>> All:
>>> 
>>> I have an NDN Testbed node, COPELABS, (and possibly others) that isn’t creating a UDP face back toward
>>> my client when I try to connect to it. I’ve tried from a couple of end hosts and the same thing happens.
>>> 
>>> When I run ndndump on COPELABS, I see ndn packets arriving from my client but
>>> with DEBUG output from nfd those packets never show up in the log file.
>>> 
>>> If I change to use TCP, it works fine.
>>> 
>>> On COPELABS:
>>> ndnops at ndn:~$ nfd --version
>>> 0.5.1-73-gbc7cb95
>>> ndnops at ndn:~$
>>> 
>>> 
>>> On my laptop:
>>> jdd> nfd --version
>>> 0.5.1
>>> jdd>
>>> 
>>> Any ideas on what could be causing this?
>>> 
>>> John
>>> 
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>> 
>