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Re: [dtn-users] dtnsend problem with a listener in a multicat group

"Zoller, David A. (MSFC-EO50)[HOSC SERVICES CONTRACT]" <david.a.zoller@nasa.gov> Thu, 07 August 2014 15:10 UTC

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From: "Zoller, David A. (MSFC-EO50)[HOSC SERVICES CONTRACT]" <david.a.zoller@nasa.gov>
To: Patsali Konstantinia <kpatsali@gmail.com>, "dtn-users@irtf.org" <dtn-users@irtf.org>
Thread-Topic: [dtn-users] dtnsend problem with a listener in a multicat group
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Date: Thu, 7 Aug 2014 15:10:09 +0000
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Archived-At: http://mailarchive.ietf.org/arch/msg/dtn-users/v0ikWFIC1q5nz2qShTcAeFSz-d0
Subject: Re: [dtn-users] dtnsend problem with a listener in a multicat group
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Hi Patsali,

Could the problem be just a typo in the destination EID?

The base of the source and destination EIDs are the same in the sample dtnsend command:



dtnsend -s dtn://dtn-a.dtn/me -d dtn://dtn-a.dtn/testing -t m -p "testing"

Let’s hope it is that simple,
DZ

From: dtn-users [mailto:dtn-users-bounces@irtf.org] On Behalf Of Patsali Konstantinia
Sent: Thursday, August 07, 2014 4:07 AM
To: dtn-users@irtf.org
Subject: [dtn-users] dtnsend problem with a listener in a multicat group


Hello to all of you Users and Developers,



Thank you for the great job you are doing!



I am in the midst of research project where I use dtn2 with Raspberry Pi and I am facing an issue

sending bundles from Raspberry Pi to my computer.



First of all, i must explain that i have a typical listener code in c to receive data from a GPS module

uses I2C bus and i want these data to be echoed by the listener to my computer over dtn2.



I configured dtn.conf in both Raspberry Pi and my computer and they communicate each other via ethernet.

I used dtnsend to send bundles to Raspberry Pi and it worked fine!



My Raspberry Pi is configured to run listener.c when boot, but still i haven't receive any bundles waiting

to be sent to my pc after dtn starts.



Also, i configured raspbian to load i2c when boot



When i run the code without dtn running, it echoes the receiving data from my GPS and after that gives me a

message "fatal error opening dtn handle: error in ipc communication" which is because dtn is not running.

The problem is to send them with dtn2...



In my listener code i use sprintf with the dtn send command



dtnsend -s dtn://dtn-a.dtn/me -d dtn://dtn-a.dtn/testing -t m -p "testing"



Can any one help me?



Thank you all in advance

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