June 2013 - Ibr-dtn - lists.ibr.cs.tu-bs.de

interruption of transmission
by Bruno Tavares 01 Jul '13

01 Jul '13

Hello all After running some tests I noticed that if I break the connection between two nodes for small amount of time (let's say 4 or 5 seconds) and then connect again the bundle is not fragmented and the tcp connection does not go down. It assumes that no connection break happen and continues to deliver the bundle. I would like to know where I can find in the code where this small break of connection can be traced to make some debug. Can anyone help me? Best regards Bruno Tavares

2 2

Creating multiple nodes
by Aayush Rana 26 Jun '13

26 Jun '13

Dear all, Sorry for bothering all. I have started working in dtn since one week now. I am unable to configure it to create multiple nodes. I tried making different config files and starting them separately in same machine, but only the first one is started. The ones after that says api port not initialized. I changed api_port in config file, but all configs still tries to use port 4550. Here is a sample of the log file:Thu Jun 20 15:52:34 2013 INFO: IBR-DTN daemon 0.8.0 (build 52345)Thu Jun 20 15:52:34 2013 INFO: Local node name: dtn://aayush-pcThu Jun 20 15:52:34 2013 INFO: using bundle storage in memory-only modeThu Jun 20 15:52:34 2013 INFO: DiscoveryAgent: broadcast mode 255.255.255.255:4551Thu Jun 20 15:52:34 2013 INFO: StandByManager: IPNDAgent adoptedThu Jun 20 15:52:34 2013 INFO: Using default routing extensionsThu Jun 20 15:52:34 2013 INFO: Forwarding of bundles enabled.Thu Jun 20 15:52:34 2013 ERROR: Unable to bind to lo:4550. API not initialized! With kind regards,Aayush Rana

2 3

change date format
by Bruno Tavares 25 Jun '13

25 Jun '13

Hello all Where can I change the date format present in the logfiles and debug files to have more precise times like milliseconds ? Best regards, Bruno Tavares

2 1

Unable to ping android mobile from laptop
by Guilherme Rolim 24 Jun '13

24 Jun '13

Good Day, I started ibr-dtn daemon on my laptop via wifi in the same network my android mobile is connect (using ibr-dtn app). The android application manages to see the laptop as a neighbour, however, the dtnping from laptop to mobile does not work, and I couldn't test the dtn ping application (from the Dtn Example App) because it stops working. I presume that both laptop and mobile can connect with each other, right? Could anyone help me understand the source of the problem? Thanks in advance, Guilherme Rolim

3 3

throughput on debug
by Bruno Tavares 24 Jun '13

24 Jun '13

Hello I would like to know if it is possible to have the information of the throughput of a transfer of a fragment. or if it is only possible to have the throughput if the bundle is totally transmitted. Best regards, Bruno Tavares

2 1

bundle storage as file based storage
by Evan Hardyanto 24 Jun '13

24 Jun '13

good afternoon. I did some test using my laptop, but I have a problem on my laptop memory because the file which going to be sent is larger than my laptop's memory. So I decided to try using a file based storage to as the bundle storage, but I do not know how to use these facilities in my ibr-dtn 0.8.0 version. if anyone can help me, I am very grateful to anyone for the help. thank you.. best regards Evan

2 1

Android DTN Ping
by Guilherme Rolim 24 Jun '13

24 Jun '13

Good day, I've installed the DTN Example App (DTN Ping) on my mobile, however, every time I click on the ping button it shows "DTN Ping has stopped working". I have tried on 2 mobiles already and both showed the same mistake. Has anyone ever had this kind of problem? If so, is there anyway to make it work? Thanks in advance, Guilherme

1 0

Re: [ibr-dtn] issue regarding transfer of files
by Johannes Morgenroth 14 Jun '13

14 Jun '13

Hello Mr. Tavares, actually the best way would be to tell me the version code of the daemon like this. $ dtnd --version IBR-DTN version: 0.9.0 (build b3e6377) Assuming you are using the latest version, I need some more details about your tests. How does your script work. There are a lot of approaches to bring an interface "up" and "down". So what do you do exactly? What might happen is that your disconnection is too short for TCP to fail completely. Instead TCP would ran into several timeouts but never disrupt completely. What happens is you longer your disconnect interval to 120 seconds or some minutes? Kind regards, Johannes Morgenroth Am 12.06.2013 12:22, schrieb Bruno Tavares: > Hello Mr Morgenro > > The version I downloaded was from repository from yesterday : > > Tue, 11 Jun 2013 10:47:40 +0100 (11:47 +0200) > > Is this information I should send? > > I was working was a old version of repository and I noticed that issue > and then I tried with the latest version of repository and the > behaviour seemed to be the same. Any ideias of what might be? > > Best regards > > Bruno Tavares Am 11.06.2013 19:46, schrieb Bruno Tavares: > Good afternoon. > > After several tests using ibrdtn from repository I noticed this following issue: > > I have two nodes in my scenario: A and B. > > A has a bundle of 77 MB to send to B. > > I have a script running on node A that puts the connection interface of that node up for 10 seconds and down for 20 seconds. > > In the beginning some data is transferred from A to B during those 10 seconds. > > In lots of the "10 seconds" intervals there is no transfer of data. > > I even putted the interface after some intervals up all the time and no data was transferred for lots of time. > > Is this a problem someone noticed? > > Can anyone give a little help to understand the problem. > > Thank you > > Best regards > > Bruno Tavares > -- > !! This message is brought to you via the `ibr-dtn' mailing list. > !! Please do not reply to this message to unsubscribe. To unsubscribe or adjust > !! your settings, send a mail message to <ibr-dtn-request(a)ibr.cs.tu-bs.de> > !! or look at https://www.ibr.cs.tu-bs.de/mailman/listinfo/ibr-dtn.

2 2

Re: [ibr-dtn] issue regarding transfer of files
by Bruno Tavares 13 Jun '13

13 Jun '13

Hello Actually the version I tested was this IBR-DTN daemon 0.9.0 (build cace11a) But I downloaded at 11-06-13 Adding information to the previous email I sent you: I use this comand to put down and up the interface : ifconfig wlan1 down ifconfig wlan1 20.0.0.250 netmask 255.255.255.0 up I am testing this with low time intervals because I want to try it in environments highly dynamic. Thank you for you time Best regards Bruno Tavares ________________________________________ De: ibr-dtn-bounces(a)ibr.cs.tu-bs.de [ibr-dtn-bounces(a)ibr.cs.tu-bs.de] em nome de ibr-dtn-request(a)ibr.cs.tu-bs.de [ibr-dtn-request(a)ibr.cs.tu-bs.de] Enviado: quinta-feira, 13 de Junho de 2013 11:00 Para: ibr-dtn(a)ibr.cs.tu-bs.de Assunto: Ibr-dtn Digest, Vol 35, Issue 3 Send Ibr-dtn mailing list submissions to ibr-dtn(a)ibr.cs.tu-bs.de To subscribe or unsubscribe via the World Wide Web, visit https://www.ibr.cs.tu-bs.de/mailman/listinfo/ibr-dtn or, via email, send a message with subject or body 'help' to ibr-dtn-request(a)ibr.cs.tu-bs.de You can reach the person managing the list at ibr-dtn-owner(a)ibr.cs.tu-bs.de When replying, please edit your Subject line so it is more specific than "Re: Contents of Ibr-dtn digest..." Today's Topics: 1. Re: issue regarding transfer of files (Johannes Morgenroth) ---------------------------------------------------------------------- Message: 1 Date: Wed, 12 Jun 2013 12:54:19 +0200 From: Johannes Morgenroth <morgenroth(a)ibr.cs.tu-bs.de> Subject: Re: [ibr-dtn] issue regarding transfer of files To: Bruno Tavares <bmpt(a)ua.pt> Cc: ibr-dtn(a)ibr.cs.tu-bs.de Message-ID: <51B8535B.5070005(a)ibr.cs.tu-bs.de> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" Hello Mr. Tavares, actually the best way would be to tell me the version code of the daemon like this. $ dtnd --version IBR-DTN version: 0.9.0 (build b3e6377) Assuming you are using the latest version, I need some more details about your tests. How does your script work. There are a lot of approaches to bring an interface "up" and "down". So what do you do exactly? What might happen is that your disconnection is too short for TCP to fail completely. Instead TCP would ran into several timeouts but never disrupt completely. What happens is you longer your disconnect interval to 120 seconds or some minutes? Kind regards, Johannes Morgenroth Am 12.06.2013 12:22, schrieb Bruno Tavares: > Hello Mr Morgenro > > The version I downloaded was from repository from yesterday : > > Tue, 11 Jun 2013 10:47:40 +0100 (11:47 +0200) > > Is this information I should send? > > I was working was a old version of repository and I noticed that issue > and then I tried with the latest version of repository and the > behaviour seemed to be the same. Any ideias of what might be? > > Best regards > > Bruno Tavares Am 11.06.2013 19:46, schrieb Bruno Tavares: > Good afternoon. > > After several tests using ibrdtn from repository I noticed this following issue: > > I have two nodes in my scenario: A and B. > > A has a bundle of 77 MB to send to B. > > I have a script running on node A that puts the connection interface of that node up for 10 seconds and down for 20 seconds. > > In the beginning some data is transferred from A to B during those 10 seconds. > > In lots of the "10 seconds" intervals there is no transfer of data. > > I even putted the interface after some intervals up all the time and no data was transferred for lots of time. > > Is this a problem someone noticed? > > Can anyone give a little help to understand the problem. > > Thank you > > Best regards > > Bruno Tavares > -- > !! This message is brought to you via the `ibr-dtn' mailing list. > !! Please do not reply to this message to unsubscribe. To unsubscribe or adjust > !! your settings, send a mail message to <ibr-dtn-request(a)ibr.cs.tu-bs.de> > !! or look at https://www.ibr.cs.tu-bs.de/mailman/listinfo/ibr-dtn.

1 0

issue regarding transfer of files
by Bruno Tavares 12 Jun '13

12 Jun '13

Good afternoon. After several tests using ibrdtn from repository I noticed this following issue: I have two nodes in my scenario: A and B. A has a bundle of 77 MB to send to B. I have a script running on node A that puts the connection interface of that node up for 10 seconds and down for 20 seconds. In the beginning some data is transferred from A to B during those 10 seconds. In lots of the "10 seconds" intervals there is no transfer of data. I even putted the interface after some intervals up all the time and no data was transferred for lots of time. Is this a problem someone noticed? Can anyone give a little help to understand the problem. Thank you Best regards Bruno Tavares

2 1