[Mini-NDN] Consumer is not receiving the data (MiniNdn)

[Vince Lehman (vslehman)]

Hi Percy,

Is the script you included your entire experiment script? If not, could you please attach the full code?

Right now the experiment you attached will fail with a Python error due to an undefined variable, host.

You can access a specific host using the method that Shuo used:

for host in self.net.hosts:
    if host.name == “p”:
         host.cmd("echo test1 | ndnpoke /ndn/edu/producer &”)

Or you can access a specific node using the self.net<http://self.net> object:

    self.net<http://self.net>['p'].cmd("echo test1 | ndnpoke /ndn/edu/p &")

--
Vince Lehman

On Feb 28, 2016, at 10:46 PM, Shuo Yang <shuoyang at email.arizona.edu<mailto:shuoyang at email.arizona.edu>> wrote:

Hi Percy,

It seems that you should write the script in this way:


 1from ndn.experiments.experiment import  Experiment

 2

 3class Experiment1(Experiment):

 4    def __init__(self,args):

 5        Experiment.__init__(self, args)

 6    def run(self):

 7        for host in self.net.hosts:

 8            if host.name<http://host.name/> == "p":

 9                host.cmd("echo test1 | ndnpoke /ndn/edu/producer &")

10

11        for host in self.net.hosts:

12            if host.name<http://host.name/> == "c":

13                print host.cmd("ndnpeek -p /ndn/edu/producer")

14

15Experiment.register("peek-poke", Experiment1)

At least yours is working on my side. I'm using Mini-ndn 0.1.1


Best luck!

Shuo

On Sun, Feb 28, 2016 at 5:09 PM, Percy Perez Aruni <pdpa at st-andrews.ac.uk<mailto:pdpa at st-andrews.ac.uk>> wrote:
Hi dear MiniNdn team

I am interested in using MiniNdn for an initial basic experiment between three nodes: a consumer , a forwarder and a producer.  It is highly possible that I am missing something,  but the consumer is not receiving the data from the producer.

Could I ask for some advice of how this could be achieved by using MiniNdn?


Some details below:

1.- Topology:  c <-> f <-> p

  where  c = consumer, f = forwarder, p =producer

2.- ExperimentClass:

from ndn.experiments.experiment import  Experiment

class Experiment1(Experiment):
    def __init__(self,args):
        Experiment.__init__(self, args)
    def run(self):
        if host.name<http://host.name/> == "p":
              host.cmd("echo test1 | ndnpoke /ndn/edu/p &")
        if host.name<http://host.name/> == "c":
              print host.cmd("ndnpeek -p /ndn/edu/p")
Experiment.register("peek-poke", Experiment1)

3.- Running as root:

#./install.sh -i; minindn --experiment=peek-poke --ctime=20  ndn_utils/topologies/three-nodes.conf

4.- "NLSR has successfully converged"


Thank you in advance for your time and help

Regards
Percy

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