Received: from relay.imagine.ie (dns1.dns.imagine.ie [87.232.1.40]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7GN21hR023509 for ; Sun, 16 Aug 2009 16:02:02 -0700 Received: from mail2.int.imagine.ie (mail2 [87.232.1.153]) by relay.imagine.ie (Postfix) with ESMTP id 3879032849 for ; Mon, 17 Aug 2009 00:00:39 +0100 (IST) Received: from [10.87.48.11] (dsl-102-234.cust.imagine.ie [87.232.102.234]) by mail2.int.imagine.ie (8.13.4/8.13.4/Debian-3) with ESMTP id n7GN0ZtQ021819 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Mon, 17 Aug 2009 00:00:36 +0100 Message-ID: <4A888F8E.4030908@cs.tcd.ie> Date: Mon, 17 Aug 2009 00:00:30 +0100 From: Stephen Farrell User-Agent: Thunderbird 2.0.0.22 (X11/20090605) MIME-Version: 1.0 To: dtn-users mailing list References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <3A5AA67A8B120B48825BFFCF54438561944769787A@NDJSSCC03.ndc.nasa.gov> In-Reply-To: <3A5AA67A8B120B48825BFFCF54438561944769787A@NDJSSCC03.ndc.nasa.gov> X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Bayes-Prob: 0.0001 (Score 0) X-Spam-Score: 0.00 () [Hold at 8.00] X-Canit-Stats-ID: 48033293 - 402f9b264011 (trained as not-spam) X-CanItPRO-Stream: outgoing X-Scanned-By: CanIt (www . roaringpenguin . com) on 87.232.1.53 Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Aug 2009 23:02:02 -0000 Folks, Can we move this thread to the dtn-interest list? It affects more than just current code so it really belongs there, Thanks, Stephen. Received: from mail-bw0-f228.google.com (mail-bw0-f228.google.com [209.85.218.228]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7GH9Yma007565 for ; Sun, 16 Aug 2009 10:09:35 -0700 Received: by bwz28 with SMTP id 28so1926998bwz.6 for ; Sun, 16 Aug 2009 10:08:14 -0700 (PDT) MIME-Version: 1.0 Received: by 10.204.70.76 with SMTP id c12mr2152882bkj.181.1250442494469; Sun, 16 Aug 2009 10:08:14 -0700 (PDT) Date: Sun, 16 Aug 2009 18:08:14 +0100 Message-ID: From: Ibrahim To: dtn-users@maillists.intel-research.net Content-Type: multipart/alternative; boundary=001636c5ab15b1e7900471455455 Subject: [dtn-users] dtn2 code features guide X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Aug 2009 17:09:35 -0000 --001636c5ab15b1e7900471455455 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi All, Thanks for the help of all people who responded to thread "DTN2 Implementation guide"... I have successfully configured the project on Eclipse, Now I can compile and run in Ubuntu using Eclipse.. I have to modify the DTN2 and now I need to understand the coding style of DTN2 so that If I make something good then I can contribute to DTN2.. Now I have following questions: 1- What technologies are used in the development of DTN2 (e.g. Event driven model, RPC etc).. So that before starting the programming one can revise these concepts.. A list of all technologies will be realy helpful, as I am very new in C++ linux programming.. 2- I can see from documentation there are lot of event classes and other stuff ... How the event model is organized in DTN2 .. 3- What the role is being played by oasys library (general comment) .. It provides lot of functions usable .. can we categorise this library ... thanks Ibrahim --001636c5ab15b1e7900471455455 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi All,
Thanks for the help of all people who responded to thread "= ;DTN2 Implementation guide"... I have successfully configured the proj= ect on Eclipse, Now I can compile and run in Ubuntu using Eclipse..=A0

I have to modify the DTN2 and now I need to understand the coding style= of DTN2 so that If I make something good then I can contribute to DTN2..= =A0 Now I have following questions:

1- What technologies are used in= the development of DTN2 (e.g. Event driven model, RPC etc).. So that befor= e starting the programming one can revise these concepts..=A0=A0 A list of = all technologies will be realy helpful, as I am very new in C++ linux progr= amming..

2- I can see from documentation there are lot of event classes and othe= r stuff ... How the event model is organized in DTN2 ..

3- What the= role is being played by oasys library (general comment) .. It provides lot= of functions usable .. can we categorise this library ...

thanks
Ibrahim
--001636c5ab15b1e7900471455455-- Received: from mx2.oit.ohio.edu (mx2.oit.ohio.edu [132.235.51.19]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7EGx8Av007852 for ; Fri, 14 Aug 2009 09:59:08 -0700 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ap4GAP4zhUqE6wiX/2dsb2JhbABEwiwOiAKITYQZBYFN X-IronPort-AV: E=Sophos;i="4.43,381,1246852800"; d="scan'208";a="8468165" Received: from oak3a.cats.ohiou.edu (HELO oak.cats.ohiou.edu) ([132.235.8.151]) by smtpout2.oit.ohio.edu with ESMTP; 14 Aug 2009 12:58:04 -0400 Received: from [192.168.1.100] (cpe-24-210-146-156.woh.res.rr.com [24.210.146.156]) (authenticated bits=0) by oak.cats.ohiou.edu (8.13.1/8.13.1) with ESMTP id n7EGv4Pc1762662 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 14 Aug 2009 12:57:08 -0400 (EDT) From: "G. Clark" To: "Ivancic, William D. (GRC-RHN0)" In-Reply-To: <3A5AA67A8B120B48825BFFCF54438561944769787A@NDJSSCC03.ndc.nasa.gov> References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <3A5AA67A8B120B48825BFFCF54438561944769787A@NDJSSCC03.ndc.nasa.gov> Content-Type: text/plain Date: Fri, 14 Aug 2009 08:56:48 -0400 Message-Id: <1250254608.2434.63.camel@cubic-laptop.Belkin> Mime-Version: 1.0 X-Mailer: Evolution 2.26.1 (2.26.1-2.fc11) Content-Transfer-Encoding: 7bit Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Aug 2009 16:59:09 -0000 Perhaps this is a silly suggestion and / or it's been suggested before, but what about setting up a special endpoint (or other bucket) that collects expired bundles and holds the header information for a predetermined period of time (but drops the payload)? To keep things from getting out of hand, the number of stored expired headers could be limited and / or this could be an optional, per-endpoint switch. >From there, you could set up a /time endpoint and use this to do what John was saying: /time would reply to any expired bundle it received with a bundle containing an empty payload. The bundle's header information would contain the current absolute timestamp of the queried node, which the person doing the querying could use to synchronize their own time. This doesn't solve problems like a node having a bad sense of time and replying to a time query, but it'd at least let nodes with no sense of time get an idea of what time their neighbors thought it was. Depending on how far away the neighbors are, though, this process could take a while. Gilbert Clark Grad Student Ohio University On Fri, 2009-08-14 at 10:59 -0500, Ivancic, William D. (GRC-RHN0) wrote: > > > >Wow, I didn't think the question would generate so many replies, I'm > >a relative newcomer to DTN. > > > >What would be wrong with asking my neighbour the time?, just like we > >do in the real world if we aren't sure of the time. > > John, > > Don't forget, you are disconnected. When does your neighbor receive the request and when did they reply? If you knew "when" you would be synchronized (at least good enough). > > Now consider you are out of sync, but don't know it. Nobody responds to your requests because they drop the bundles appear to have expired or the Bundles appear to originate too far into the future and considered a DOS attack. > > After a while (however long that is) you decide to send bundles that are created on day 1 and live for 100 years. Nobody responds because they the bundle lifetimes are too large and considered a DOS attach. > (You indicate you are new to DTN. May I suggest adding some disconnection to your system as well as multi-hop topologies. Turn off NTP for a few days. Reboot machines. Play with late-binding.) > > _______________________________________________ > dtn-users mailing list > dtn-users@maillists.intel-research.net > http://maillists.intel-research.net/mailman/listinfo/dtn-users Received: from ndjsnpf02.ndc.nasa.gov (ndjsnpf02.ndc.nasa.gov [198.117.1.122]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7EG0TYv005156 for ; Fri, 14 Aug 2009 09:00:29 -0700 Received: from ndjsppt02.ndc.nasa.gov (ndjsppt02.ndc.nasa.gov [198.117.1.101]) by ndjsnpf02.ndc.nasa.gov (Postfix) with ESMTP id B9FE0A84E7; Fri, 14 Aug 2009 10:59:25 -0500 (CDT) Received: from ndjshub05.ndc.nasa.gov (ndjshub05.ndc.nasa.gov [198.117.4.164]) by ndjsppt02.ndc.nasa.gov (8.14.3/8.14.3) with ESMTP id n7EFxPGU016110; Fri, 14 Aug 2009 10:59:25 -0500 Received: from NDJSSCC03.ndc.nasa.gov ([198.117.4.170]) by ndjshub05.ndc.nasa.gov ([198.117.4.164]) with mapi; Fri, 14 Aug 2009 10:59:25 -0500 From: "Ivancic, William D. (GRC-RHN0)" To: John Ronan , dtn-users mailing list Date: Fri, 14 Aug 2009 10:59:23 -0500 Thread-Topic: [dtn-users] Time question. Thread-Index: Acoc8vF1/QLjnBs+SwqgFRSmsJoIGwAA3ycw Message-ID: <3A5AA67A8B120B48825BFFCF54438561944769787A@NDJSSCC03.ndc.nasa.gov> References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=1.12.7400:2.4.4, 1.2.40, 4.0.166 definitions=2009-08-14_10:2009-08-11, 2009-08-14, 2009-08-14 signatures=0 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by maillists.intel-research.net id n7EG0TYv005156 Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Aug 2009 16:00:29 -0000 > >Wow, I didn't think the question would generate so many replies, I'm >a relative newcomer to DTN. > >What would be wrong with asking my neighbour the time?, just like we >do in the real world if we aren't sure of the time. John, Don't forget, you are disconnected. When does your neighbor receive the request and when did they reply? If you knew "when" you would be synchronized (at least good enough). Now consider you are out of sync, but don't know it. Nobody responds to your requests because they drop the bundles appear to have expired or the Bundles appear to originate too far into the future and considered a DOS attack. After a while (however long that is) you decide to send bundles that are created on day 1 and live for 100 years. Nobody responds because they the bundle lifetimes are too large and considered a DOS attach. (You indicate you are new to DTN. May I suggest adding some disconnection to your system as well as multi-hop topologies. Turn off NTP for a few days. Reboot machines. Play with late-binding.) Received: from smtps.tssg.org (smtps.tssg.org [193.1.185.47]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7EFI8qN003233 for ; Fri, 14 Aug 2009 08:18:09 -0700 X-IronPort-AV: E=Sophos;i="4.43,381,1246834800"; d="scan'208";a="613228" Received: from unknown (HELO [10.37.2.20]) ([10.37.2.20]) by smtps.tssg.org with ESMTP/TLS/AES128-SHA; 14 Aug 2009 16:17:04 +0100 Mime-Version: 1.0 (Apple Message framework v753.1) In-Reply-To: <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit From: John Ronan Date: Fri, 14 Aug 2009 16:17:05 +0100 To: dtn-users mailing list X-Mailer: Apple Mail (2.753.1) Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Aug 2009 15:18:09 -0000 >>> >>>> I am told time sync is not a problem. ..... Just kidding. >>>> >>>> How you sync in such an environment is a good question. I will >>>> tell you NASA Glenn Research Center (GRC) has experienced problems >>>> and BBN has also. BBN and GRC are discussing ways to standardize a >>>> solution that does not require system time sync for the "Bundle >>>> Protocol" to work - basically use relative time versus absolute >>>> time. Unfortunately, we do not have a solution implemented yet. >>>> >>> Something like 'drifting' all nodes to a common view or something? >>> >> >> More like a absolute time-to-live (TTL). I create a bundle and >> indicate it has a lifetime of X. When a source receives it, the >> source keeps track of the bundle time and adjusts the time on >> transmission to the next bundle agent. > > This would get rid of the need for synchronized time, but would > introduce a requirement to know the transmission times over the > links (if the transmission times are significant compared to the > storage times in the nodes). This might be problematic in, e.g., > sneakernet type scenarios. Implementation-wise it would also mean > that every bundle would need to be modified immediately before > being transmitted over a link. > > As such I would see it as a different trade-off to the current > mechanism rather than an absolute improvement. However, I suspect > both approaches should be supported. > >> We have also discussed usefulness of hop count to identify obvious >> loops. Wow, I didn't think the question would generate so many replies, I'm a relative newcomer to DTN. What would be wrong with asking my neighbour the time?, just like we do in the real world if we aren't sure of the time. I don't have to take their word on it, I could ask a second (or third person), and then pick something between them, or between the three of us. I could (potentially) increase my bundle expire time by an uncertainty value based on the time change or the differences. Regards John -- John Ronan , +353-51-302938 Telecommunications Software & Systems Group, http://www.tssg.org Received: from exprod5og108.obsmtp.com (exprod5og108.obsmtp.com [64.18.0.186]) by maillists.intel-research.net (8.13.8/8.13.8) with SMTP id n7EEU1HZ000782 for ; Fri, 14 Aug 2009 07:30:01 -0700 Received: from source ([98.191.170.37]) by exprod5ob108.postini.com ([64.18.4.12]) with SMTP ID DSNKSoV0qvULAOO8MPp5V6LAIrT2KsXT4cUw@postini.com; Fri, 14 Aug 2009 07:28:59 PDT Received: from 192.168.10.63 ([192.168.10.63]) by TSIEXCHANGE.tridsys.com ([192.168.1.16]) with Microsoft Exchange Server HTTP-DAV ; Fri, 14 Aug 2009 14:28:57 +0000 Received: from john-d830 by TSIEXCHANGE; 14 Aug 2009 10:28:57 -0400 From: John Setzer To: "Graham Keellings (Leonix Solutions Pte Ltd)" In-Reply-To: <4A84CF3E.4000607@LeonixSolutions.com> References: <4A84CF3E.4000607@LeonixSolutions.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Fri, 14 Aug 2009 10:28:57 -0400 Message-Id: <1250260137.4866.20.camel@john-d830> Mime-Version: 1.0 X-Mailer: Evolution 2.26.1 Cc: dtn-users Subject: Re: [dtn-users] Does anyone build the software in Eclipse? X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Aug 2009 14:30:02 -0000 Graham, I am using Eclipse 3.5 with the CDT on Ubuntu. You can do the following: 1. Build oasys with make like you normally would. 2. Have all the dtn2 code in a directory ready to go. 3. New->Project->C++->C++ Project 4. Set the project name to be your dtn2 directory and the workspace to be the directory containing your dtn directory. 5. Select the Makefile Project->Empty Project setting. 6. Finish 7. Now Eclipse will use the makefile that comes with dtn2 to build the project and you can use the debugger. 8. I think you may have to add files you create to the makefile manually. Even if you do a non-makefile project Eclipse will just auto-generate a makefile for you, and use that to build the project. That might be nice, but you aren't escaping makefiles. There is an eclipse plug-in called "Open Extern" that allows you to right click on directories in the Poject Explorer and open a shell on whatever directory you had selected. I highly recommend it for those times when your shell is better at doing things than Eclipse. -John Setzer On Fri, 2009-08-14 at 10:43 +0800, Graham Keellings (Leonix Solutions Pte Ltd) wrote: > Makefiles are so half a century ago ;-) > > Does anyone build the software in an IDE, preferably Eclipse? Even a > Source Navigator project would be welcome (albeit not too far removed > from DoxyGen). > > That would let us forget about makefiles, refactor more easily, just > about the code from use to declaration (which, admittedly DoxyGen can > do) and .... debug ... > > If anyone does, I'd love a copy of your eclipse workspace. > > If not, I might give it a bash myself. > > ~graham(); > _______________________________________________ > dtn-users mailing list > dtn-users@maillists.intel-research.net > http://maillists.intel-research.net/mailman/listinfo/dtn-users Received: from asmtpout015.mac.com (asmtpout015.mac.com [17.148.16.90]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7E84N3u015383 for ; Fri, 14 Aug 2009 01:04:24 -0700 MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Received: from [192.168.1.10] ([94.30.69.47]) by asmtp015.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0KOC00DJQX1KFQE2@asmtp015.mac.com> for dtn-users@mailman.dtnrg.org; Fri, 14 Aug 2009 01:03:22 -0700 (PDT) Message-id: From: Darren Long To: "Graham Keellings (Leonix Solutions Pte Ltd)" , dtn-users mailing list In-reply-to: <4A84CF3E.4000607@LeonixSolutions.com> Date: Fri, 14 Aug 2009 09:03:19 +0100 References: <4A84CF3E.4000607@LeonixSolutions.com> X-Mailer: Apple Mail (2.936) Subject: Re: [dtn-users] Does anyone build the software in Eclipse? X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Aug 2009 08:04:24 -0000 I did once get Eclipse CDT to build DTN2 - I think I had to use something called Ant to wrap the build process. This was all in an effort to use a GUI debugger and was quite a few years ago. Now I just use GDB and be done with it. However, I find Eclipse to be slow and bloaty and would be mortified if there was a move towards making DTN2 an IDE based project. I can probably build DTN2 in the time it takes to load Eclipse and some of us (at least me) do native compilations on headless embedded Linux targets. That said, I'd love to find a good UML tool that could reverse- engineer DTN2 and show me some diagrams. Unfortunately, I'm not prepared to pay for one, and haven't found (or written) a good enough one. Cheers, Darren On 14 Aug 2009, at 03:43, Graham Keellings (Leonix Solutions Pte Ltd) wrote: > Makefiles are so half a century ago ;-) > > Does anyone build the software in an IDE, preferably Eclipse? Even > a Source Navigator project would be welcome (albeit not too far > removed from DoxyGen). > > That would let us forget about makefiles, refactor more easily, just > about the code from use to declaration (which, admittedly DoxyGen > can do) and .... debug ... > > If anyone does, I'd love a copy of your eclipse workspace. > > If not, I might give it a bash myself. > > ~graham(); > _______________________________________________ > dtn-users mailing list > dtn-users@maillists.intel-research.net > http://maillists.intel-research.net/mailman/listinfo/dtn-users Received: from c.painless.aaisp.net.uk (c.painless.aaisp.net.uk [81.187.30.53]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7E7Y5Fg013937 for ; Fri, 14 Aug 2009 00:34:05 -0700 Received: from host-234.stfturist.se ([195.67.43.234] helo=[192.168.201.197]) by c.painless.aaisp.net.uk with esmtpa (Exim 4.69) (envelope-from ) id 1MbrHY-0000DM-BM; Fri, 14 Aug 2009 08:33:03 +0100 Message-ID: <4A85130F.2080807@folly.org.uk> Date: Fri, 14 Aug 2009 08:32:31 +0100 From: Elwyn Davies User-Agent: Thunderbird 2.0.0.19 (X11/20081209) MIME-Version: 1.0 To: "Graham Keellings (Leonix Solutions Pte Ltd)" References: <4A84CF3E.4000607@LeonixSolutions.com> In-Reply-To: <4A84CF3E.4000607@LeonixSolutions.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: dtn-users Subject: Re: [dtn-users] Does anyone build the software in Eclipse? X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Aug 2009 07:34:06 -0000 Hi, Graham. I import the source trees and makefiles into Eclipse after running 'configure' in order to browse the code, build, debug etc. Very convenient. Just import the code as a new C++ project changing the default location to the root of the source tree. I am not in front of a machine with Eclipse at the moment so I can't be more specific. However I don't think we should rush to make an Eclipse project the default. I don't have any understanding of how easy or difficult it would be to deal with the multitude of environments that the configure system copes with at the moment - the IDE solution would need to cover them at least as well. /Elwyn Graham Keellings (Leonix Solutions Pte Ltd) wrote: > Makefiles are so half a century ago ;-) > > Does anyone build the software in an IDE, preferably Eclipse? Even a > Source Navigator project would be welcome (albeit not too far removed > from DoxyGen). > > That would let us forget about makefiles, refactor more easily, just > about the code from use to declaration (which, admittedly DoxyGen can > do) and .... debug ... > > If anyone does, I'd love a copy of your eclipse workspace. > > If not, I might give it a bash myself. > > ~graham(); > ------------------------------------------------------------------------ > > _______________________________________________ > dtn-users mailing list > dtn-users@maillists.intel-research.net > http://maillists.intel-research.net/mailman/listinfo/dtn-users > Received: from sky.fastbighost.net (sky.fastbighost.net [76.76.22.153]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7E2iMsq000772 for ; Thu, 13 Aug 2009 19:44:22 -0700 Received: from dyn98-b60-access.superdsl.com.sg ([202.73.60.98] helo=[192.9.200.103]) by sky.fastbighost.net with esmtpa (Exim 4.69) (envelope-from ) id 1MbmlF-0001TE-2D for dtn-users@maillists.intel-research.net; Thu, 13 Aug 2009 22:43:21 -0400 Message-ID: <4A84CF3E.4000607@LeonixSolutions.com> Date: Fri, 14 Aug 2009 10:43:10 +0800 From: "Graham Keellings (Leonix Solutions Pte Ltd)" Organization: Leonix Solutions Pte Ltd User-Agent: Thunderbird 2.0.0.22 (X11/20090608) MIME-Version: 1.0 To: dtn-users Content-Type: multipart/mixed; boundary="------------050208050301060304080404" X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - sky.fastbighost.net X-AntiAbuse: Original Domain - maillists.intel-research.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - LeonixSolutions.com X-Source: X-Source-Args: X-Source-Dir: Subject: [dtn-users] Does anyone build the software in Eclipse? X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Aug 2009 02:44:23 -0000 This is a multi-part message in MIME format. --------------050208050301060304080404 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Makefiles are so half a century ago ;-) Does anyone build the software in an IDE, preferably Eclipse? Even a Source Navigator project would be welcome (albeit not too far removed from DoxyGen). That would let us forget about makefiles, refactor more easily, just about the code from use to declaration (which, admittedly DoxyGen can do) and .... debug ... If anyone does, I'd love a copy of your eclipse workspace. If not, I might give it a bash myself. ~graham(); --------------050208050301060304080404 Content-Type: text/x-vcard; charset=utf-8; name="Graham.vcf" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="Graham.vcf" begin:vcard fn:Graham Keellings n:Keellings;Graham org:Leonix Solutions Pte Ltd adr:TradeHub 21;;18 Boon Lay Way #09-95;;;609966;Singapore email;internet:Graham@LeonixSolutions.com title:Technical director tel;work:+65 6316 9968 tel;fax:+65 6316 9208 tel;cell:+65 9725 7353 x-mozilla-html:FALSE url:http://leonixsolutions.com/ version:2.1 end:vcard --------------050208050301060304080404-- Received: from sky.fastbighost.net (sky.fastbighost.net [76.76.22.153]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7E2ejmY000610 for ; Thu, 13 Aug 2009 19:40:45 -0700 Received: from dyn98-b60-access.superdsl.com.sg ([202.73.60.98] helo=[192.9.200.103]) by sky.fastbighost.net with esmtpa (Exim 4.69) (envelope-from ) id 1Mbmhj-0007Zp-Sd; Thu, 13 Aug 2009 22:39:44 -0400 Message-ID: <4A84CE65.5080003@LeonixSolutions.com> Date: Fri, 14 Aug 2009 10:39:33 +0800 From: "Graham Keellings (Leonix Solutions Pte Ltd)" Organization: Leonix Solutions Pte Ltd User-Agent: Thunderbird 2.0.0.22 (X11/20090608) MIME-Version: 1.0 To: Ibrahim References: In-Reply-To: Content-Type: multipart/mixed; boundary="------------000808030002050908090308" X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - sky.fastbighost.net X-AntiAbuse: Original Domain - maillists.intel-research.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - LeonixSolutions.com X-Source: X-Source-Args: X-Source-Dir: Cc: dtn-users@maillists.intel-research.net Subject: Re: [dtn-users] DTN2 Implementation guide X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Aug 2009 02:40:46 -0000 This is a multi-part message in MIME format. --------------000808030002050908090308 Content-Type: multipart/alternative; boundary="------------060002010606090602000307" --------------060002010606090602000307 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Ibrahim wrote: > Hi All,I am a master student and working on DTN.. For my project, I have to > add functionality in DTN2. I am new in programming on linux and using such > big open source libraries. I have good experience of programming although > but, it is difficult for me to add my new classes in the DTN2 code and how > to make those files part of DTN2. > Can any one please recommend a book, tutorial how to compile files using > make files in general and for DTN2 in particular. Any level of guidance > will help me a lot. > If you must have a book, then I would suggest O'Reilly's "Managing Projects with GNU Make" http://www.amazon.com/Managing-Projects-Make-Nutshell-Handbooks/dp/0596006101/ref=sr_1_1?ie=UTF8&s=books&qid=1250217125&sr=8-1 It costs $20 at Amazon, but turns up cheaper on eBay. Alternatively, there are many websites which explain makefiles (for free). To understand the DTN code (in order to extend it), look at the DoxyGen output which is delivered with the code. If I misunderstand and you are really looking for a book about DTN, I am sure that someone can recommend one. Hmm, why bother with makefiles? I think I'll start a new thread to see if anyone built teh software in Eclipse.... Good luck! > regards, > Ibrahim > > > ------------------------------------------------------------------------ > > _______________________________________________ > dtn-users mailing list > dtn-users@maillists.intel-research.net > http://maillists.intel-research.net/mailman/listinfo/dtn-users > -- Technical Director Leonix Solutions (Pte) Ltd 18 Boon Lay Way #09-95 TradeHub 21 Singapore 609966 Telephone:+65 6316 9968 Fax: +65 6316 9208 --------------060002010606090602000307 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Ibrahim wrote: 
Hi All,I am a master student and working on DTN.. For my project, I have to
add functionality in DTN2. I am new in programming on linux and using such
big open source libraries. I have good experience of programming although
but, it is difficult for me to add my new classes in the DTN2 code and how
to make those files part of DTN2.
Can any one please recommend a book, tutorial how to compile files using
make files in general and for DTN2 in particular.  Any level of guidance
will help me a lot.
If you must have a book, then I would suggest O'Reilly's "Managing Projects with GNU Make"  http://www.amazon.com/Managing-Projects-Make-Nutshell-Handbooks/dp/0596006101/ref=sr_1_1?ie=UTF8&s=books&qid=1250217125&sr=8-1  It costs $20 at Amazon, but turns up cheaper on eBay.

Alternatively, there are many websites which explain makefiles (for free).

To understand the DTN code (in order to extend it), look at the DoxyGen output which is delivered with the code.

If I misunderstand and you are really looking for a book about DTN, I am sure that someone can recommend one.

Hmm, why bother with makefiles? I think I'll start a new thread to see if anyone built teh software in Eclipse....

Good luck!


regards,
Ibrahim

  

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-- 
Technical Director
Leonix Solutions (Pte) Ltd
18 Boon Lay Way
#09-95 TradeHub 21
Singapore 609966
Telephone:+65 6316 9968
Fax: +65 6316 9208
--------------060002010606090602000307-- --------------000808030002050908090308 Content-Type: text/x-vcard; charset=utf-8; name="Graham.vcf" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="Graham.vcf" begin:vcard fn:Graham Keellings n:Keellings;Graham org:Leonix Solutions Pte Ltd adr:TradeHub 21;;18 Boon Lay Way #09-95;;;609966;Singapore email;internet:Graham@LeonixSolutions.com title:Technical director tel;work:+65 6316 9968 tel;fax:+65 6316 9208 tel;cell:+65 9725 7353 x-mozilla-html:FALSE url:http://leonixsolutions.com/ version:2.1 end:vcard --------------000808030002050908090308-- Received: from asmtpout022.mac.com (asmtpout022.mac.com [17.148.16.97]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DKqUqI017370 for ; Thu, 13 Aug 2009 13:52:30 -0700 MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Received: from [192.168.1.10] ([94.30.69.47]) by asmtp022.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0KOC008FW1XVIR00@asmtp022.mac.com> for dtn-users@mailman.dtnrg.org; Thu, 13 Aug 2009 13:51:33 -0700 (PDT) Message-id: <5FC26EA7-5D45-4942-9596-4EFA972DD0A4@mac.com> From: Darren Long To: dtn-users mailing list Date: Thu, 13 Aug 2009 21:51:30 +0100 X-Mailer: Apple Mail (2.936) Subject: [dtn-users] Session options in DTN2 API X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 20:52:30 -0000 Hi, Can anyone please give me a quick rundown of the use-cases for the session options in the DTN2 api? Cheers, Darren Received: from mail-fx0-f223.google.com (mail-fx0-f223.google.com [209.85.220.223]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DI66AN009937 for ; Thu, 13 Aug 2009 11:06:06 -0700 Received: by fxm23 with SMTP id 23so776274fxm.6 for ; Thu, 13 Aug 2009 11:05:09 -0700 (PDT) MIME-Version: 1.0 Received: by 10.204.33.193 with SMTP id i1mr753927bkd.75.1250186709394; Thu, 13 Aug 2009 11:05:09 -0700 (PDT) In-Reply-To: References: Date: Thu, 13 Aug 2009 19:05:09 +0100 Message-ID: From: Ibrahim To: dtn-users@maillists.intel-research.net Content-Type: multipart/alternative; boundary=000325557a76b767ca047109c6fb Subject: [dtn-users] DTN2 Implementation guide X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 18:06:07 -0000 --000325557a76b767ca047109c6fb Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi All,I am a master student and working on DTN.. For my project, I have to add functionality in DTN2. I am new in programming on linux and using such big open source libraries. I have good experience of programming although but, it is difficult for me to add my new classes in the DTN2 code and how to make those files part of DTN2. Can any one please recommend a book, tutorial how to compile files using make files in general and for DTN2 in particular. Any level of guidance will help me a lot. regards, Ibrahim --000325557a76b767ca047109c6fb Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Hi All,
I am a master student and working on DTN.. For my project= , I have to add functionality in DTN2.=A0I am new in programming on linux a= nd using such big open source libraries.=A0I have good experience of progra= mming although but, it is difficult for me to add my new classes in the DTN= 2 code and how to make those files part of DTN2.=A0
Can any one please recommend a book, tutorial how to compile files usi= ng make files in general and for DTN2 in particular. =A0Any level of guidan= ce will help me a lot.=A0

regards,
Ibrah= im






--000325557a76b767ca047109c6fb-- Received: from gateway0.EECS.Berkeley.EDU (gateway0.EECS.Berkeley.EDU [169.229.60.87]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DGolvM006451 for ; Thu, 13 Aug 2009 09:50:47 -0700 Received: from silver.dyn.home (adsl-70-231-143-246.dsl.snfc21.sbcglobal.net [70.231.143.246]) (authenticated bits=0) by gateway0.EECS.Berkeley.EDU (8.14.3/8.13.5) with ESMTP id n7DGncdP026410 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT); Thu, 13 Aug 2009 09:49:39 -0700 (PDT) Message-Id: <1BCA02E7-58EB-4D6B-8323-469FDCA65F9C@cs.berkeley.edu> From: Kevin Fall To: "Ivancic, William D. (GRC-RHN0)" In-Reply-To: <3A5AA67A8B120B48825BFFCF5443856194476973E1@NDJSSCC03.ndc.nasa.gov> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v936) Date: Thu, 13 Aug 2009 09:49:37 -0700 References: <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> <4A841C80.3030403@bbn.com> <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> <4A84283F.1070709@bbn.com> <9a4753250908130821u1a2ac73cyb2e72da4d672accf@mail.gmail.com> <4A8431A0.9010408@bbn.com> <9a4753250908130833t466421e6ga24ab6fddacd6887@mail.gmail.com> <4A843401.7050708@bbn.com> <9a4753250908130851s3c0c101fqdee7e48ed65c2cd3@mail.gmail.com> <3A5AA67A8B120B48825BFFCF5443856194476973E1@NDJSSCC03.ndc.nasa.gov> X-Mailer: Apple Mail (2.936) Cc: dtn-users mailing list , dtn-interest@maillists.intel-research.net Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 16:50:48 -0000 Well, I figured we would be getting back to this discussion :)... cross-posting to dtn-interest A few things- The original purpose of wallclock time in bundles was to figure out when they could be dropped. This had nothing to do with routing/loop detection or directly to DoS attacks, but was instead a thing the data originator could set in a bundle, intermediaries could figure out if dropping it was ok, and recipients could ascertain how old the information was when received (like you do in e-mail... an important bit of info imho). It is thus important for "data centric" networking. Sync'd time is a basis for the setting the bundle origination timestamp, but also has many other benefits (like supporting routing protocols that require scheduling [a defined requirement for dtn], comparable logs, and as the basis for better security, network management operations, distributed ordering, etc). Further, we assumed that the propagation delay for delivery can be very large and unknown... from space DTNs to USB sticks. And contrary to another point raised, there are quite reasonable reasons why a USB stick acts as a way to distribute data {although whether its a "link" or "node" is an interesting discussion I have brought up a few times}. So, the system by definition was assumed sync'd, so having a timestamp with sync'd time is not a big deal. In parallel to above, it was deemed considered reasonable to believe most systems could have clocks in approximate sync, and I at least believe this still to be true. We may need to argue what 'approximate' means, but a few minutes in the worst possible case. I would argue that if you can't get a system sync'd to within a few minutes (as people can with their watches, or oscillators can be once set from time to time), you have other problems. Reasonable people may disagree. And yes, there are some systems that may never be able to get a clock right yet should be able to talk bundles. As I have said, I believe those are (should be) exceptional cases. "Exceptional" means that there should be ways of providing time sync within the DTN context (by supporting protocols if necessary) for almost all devices. For those that simply can't get the time ever [still waiting to see one of those...] there should be a way to indicate that bundles they originate are using a totally local notion of time. Perhaps there should also be a way of re-writing or augmenting bundles sent by such nodes with a best approximate originating timestamp (e.g., set by its nearest neighbor if delivered over a relatively low latency link). Said yet another way, I think the capabilities of the current timestamp remain important and reasonable. That said, as I mentioned in Stockholm, I don't think we will ever bottom-out on this topic until we commit it to text in a document... "considerations on time for DTN" or the like. And I would suggest we need to understand the following things: 1. what the range of time-impoverished devices behaviors are (e.g., boots with no time? can't ever get the time? doesn't have an oscillator? crappy oscillator?) 2. what capabilities are sacrificed and enabled if the type of timing were changed this will likely be thought-provoking. For example, it is important to me that a bundle can be essentially "written on the wall" and picked up later. Said another way, I believe bundles need to be able to be written to storage for long periods of time (like in USB stick) and extracted later. I have some concerns about how any relative timer would work with this, but my ears are open. Who's interested in such a doc? - K On Aug 13, 2009, at Aug 139:16 AMPDT, Ivancic, William D. (GRC-RHN0) wrote: >> On Behalf Of Kurtis Heimerl >> Sent: Thursday, August 13, 2009 11:51 AM >> To: Daniel Ellard >> Cc: dtn-users mailing list >> Subject: Re: [dtn-users] Time question. > > "My overarching point is that DTNs are supposed to put connectivity > over performance," > > Kurtis, I am confused. Can you explain what you mean by the above > statement? > > My view of DTNs is that they are design to allow communication in > environments where disconnection is the norm with periods of > connectivity. For some systems, those periods of connectivity are > know (such as in a space backbone) and for others it may be somewhat > known (such as a bus data-mule that has a fairly predictable > schedule) and for some systems connectivity may be extremely > sporadic and opportunistic. > > My view is the DTNs such as "Bundling" are design to optimize store- > and-forward resource allocation (storage, bandwidth and transmission) > > > "and a lot of these metrics are doing the opposite." > > Which metrics are you referring to? > > > "If we put a lot of these problems into E2E semantics and just focus > on how to avoid DOS (which directly impacts > connectivity) we'll be on more stable ground." > > Again, I am not clear what you are driving at above. Are you saying > that we may be mixing to much application with transport? Can you > clarify. > > > Thanks, > > -- Will > > > > > _______________________________________________ > dtn-users mailing list > dtn-users@maillists.intel-research.net > http://maillists.intel-research.net/mailman/listinfo/dtn-users Received: from ndmsnpf03.ndc.nasa.gov (ndmsnpf03.ndc.nasa.gov [198.117.0.123]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DGHD7g004911 for ; Thu, 13 Aug 2009 09:17:14 -0700 Received: from ndjsppt02.ndc.nasa.gov (ndjsppt02.ndc.nasa.gov [198.117.1.101]) by ndmsnpf03.ndc.nasa.gov (Postfix) with ESMTP id 390662D8430; Thu, 13 Aug 2009 11:16:18 -0500 (CDT) Received: from ndjshub01.ndc.nasa.gov (ndjshub01.ndc.nasa.gov [198.117.4.160]) by ndjsppt02.ndc.nasa.gov (8.14.3/8.14.3) with ESMTP id n7DGGI4i012489; Thu, 13 Aug 2009 11:16:18 -0500 Received: from NDJSSCC03.ndc.nasa.gov ([198.117.4.170]) by ndjshub01.ndc.nasa.gov ([198.117.4.160]) with mapi; Thu, 13 Aug 2009 11:16:17 -0500 From: "Ivancic, William D. (GRC-RHN0)" To: Kurtis Heimerl , Daniel Ellard Date: Thu, 13 Aug 2009 11:16:11 -0500 Thread-Topic: [dtn-users] Time question. Thread-Index: AcocLoD/Dn2GZNedSue1VbaXSpsbwAAAKbzw Message-ID: <3A5AA67A8B120B48825BFFCF5443856194476973E1@NDJSSCC03.ndc.nasa.gov> References: <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> <4A841C80.3030403@bbn.com> <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> <4A84283F.1070709@bbn.com> <9a4753250908130821u1a2ac73cyb2e72da4d672accf@mail.gmail.com> <4A8431A0.9010408@bbn.com> <9a4753250908130833t466421e6ga24ab6fddacd6887@mail.gmail.com> <4A843401.7050708@bbn.com> <9a4753250908130851s3c0c101fqdee7e48ed65c2cd3@mail.gmail.com> In-Reply-To: <9a4753250908130851s3c0c101fqdee7e48ed65c2cd3@mail.gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=1.12.7400:2.4.4, 1.2.40, 4.0.166 definitions=2009-08-13_10:2009-08-11, 2009-08-13, 2009-08-13 signatures=0 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by maillists.intel-research.net id n7DGHD7g004911 Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 16:17:14 -0000 > On Behalf Of Kurtis Heimerl >Sent: Thursday, August 13, 2009 11:51 AM >To: Daniel Ellard >Cc: dtn-users mailing list >Subject: Re: [dtn-users] Time question. "My overarching point is that DTNs are supposed to put connectivity over performance," Kurtis, I am confused. Can you explain what you mean by the above statement? My view of DTNs is that they are design to allow communication in environments where disconnection is the norm with periods of connectivity. For some systems, those periods of connectivity are know (such as in a space backbone) and for others it may be somewhat known (such as a bus data-mule that has a fairly predictable schedule) and for some systems connectivity may be extremely sporadic and opportunistic. My view is the DTNs such as "Bundling" are design to optimize store-and-forward resource allocation (storage, bandwidth and transmission) "and a lot of these metrics are doing the opposite." Which metrics are you referring to? "If we put a lot of these problems into E2E semantics and just focus on how to avoid DOS (which directly impacts connectivity) we'll be on more stable ground." Again, I am not clear what you are driving at above. Are you saying that we may be mixing to much application with transport? Can you clarify. Thanks, -- Will Received: from mail-vw0-f172.google.com (mail-vw0-f172.google.com [209.85.212.172]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DFpvvm003734 for ; Thu, 13 Aug 2009 08:51:57 -0700 Received: by vws2 with SMTP id 2so743370vws.4 for ; Thu, 13 Aug 2009 08:51:02 -0700 (PDT) MIME-Version: 1.0 Sender: munncha@gmail.com Received: by 10.220.127.144 with SMTP id g16mr1286957vcs.24.1250178662107; Thu, 13 Aug 2009 08:51:02 -0700 (PDT) In-Reply-To: <4A843401.7050708@bbn.com> References: <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> <4A841C80.3030403@bbn.com> <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> <4A84283F.1070709@bbn.com> <9a4753250908130821u1a2ac73cyb2e72da4d672accf@mail.gmail.com> <4A8431A0.9010408@bbn.com> <9a4753250908130833t466421e6ga24ab6fddacd6887@mail.gmail.com> <4A843401.7050708@bbn.com> Date: Thu, 13 Aug 2009 21:21:02 +0530 X-Google-Sender-Auth: c4c6288de02ecef5 Message-ID: <9a4753250908130851s3c0c101fqdee7e48ed65c2cd3@mail.gmail.com> From: Kurtis Heimerl To: Daniel Ellard Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by maillists.intel-research.net id n7DFpvvm003734 Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 15:51:58 -0000 Sorry if I'm being unclear, low on sleep this week. I totally buy that. My overarching point is that DTNs are supposed to put connectivity over performance, and a lot of these metrics are doing the opposite. If we put a lot of these problems into E2E semantics and just focus on how to avoid DOS (which directly impacts connectivity) we'll be on more stable ground. On Thu, Aug 13, 2009 at 9:10 PM, Daniel Ellard wrote: > Kurtis Heimerl wrote: >> Ok, that's a good point. But maybe we can make it easier to keep it >> properly configured by not using easily (and commonly) skewed metrics >> such as wall clock to determine a bundle's fate. > > I completely agree.  All I want is a protocol that > > a) behaves properly when the configuration is correct > > b) doesn't depend on unrealistic assumptions in order to > achieve correct configuration > > The debate mostly is about what assumptions are unrealistic. >  There are many perspectives on this.  For the applications > I am focussed on, synch'd clocks are not a realistic assumption. > > -Dan > > -- > Daniel Ellard, Ph.D. > Senior Scientist, Network Research > BBN Technologies > 10 Moulton Street > Cambridge, MA 02138 > dellard@bbn.com > Received: from mx3.bbn.com (mx3.bbn.com [128.33.1.81]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DFfjCY003271 for ; Thu, 13 Aug 2009 08:41:46 -0700 Received: from senshu.bbn.com ([128.89.80.164]) by mx3.bbn.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.63) (envelope-from ) id 1MbcQ5-0003hg-At; Thu, 13 Aug 2009 11:40:49 -0400 Message-ID: <4A843401.7050708@bbn.com> Date: Thu, 13 Aug 2009 11:40:49 -0400 From: Daniel Ellard Organization: BBN Technologies User-Agent: Thunderbird 2.0.0.22 (Macintosh/20090605) MIME-Version: 1.0 To: Kurtis Heimerl References: <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> <4A841C80.3030403@bbn.com> <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> <4A84283F.1070709@bbn.com> <9a4753250908130821u1a2ac73cyb2e72da4d672accf@mail.gmail.com> <4A8431A0.9010408@bbn.com> <9a4753250908130833t466421e6ga24ab6fddacd6887@mail.gmail.com> In-Reply-To: <9a4753250908130833t466421e6ga24ab6fddacd6887@mail.gmail.com> X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 15:41:46 -0000 Kurtis Heimerl wrote: > Ok, that's a good point. But maybe we can make it easier to keep it > properly configured by not using easily (and commonly) skewed metrics > such as wall clock to determine a bundle's fate. I completely agree. All I want is a protocol that a) behaves properly when the configuration is correct b) doesn't depend on unrealistic assumptions in order to achieve correct configuration The debate mostly is about what assumptions are unrealistic. There are many perspectives on this. For the applications I am focussed on, synch'd clocks are not a realistic assumption. -Dan -- Daniel Ellard, Ph.D. Senior Scientist, Network Research BBN Technologies 10 Moulton Street Cambridge, MA 02138 dellard@bbn.com Received: from mail-vw0-f172.google.com (mail-vw0-f172.google.com [209.85.212.172]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DFY93G002911 for ; Thu, 13 Aug 2009 08:34:09 -0700 Received: by vws2 with SMTP id 2so732526vws.4 for ; Thu, 13 Aug 2009 08:33:14 -0700 (PDT) MIME-Version: 1.0 Sender: munncha@gmail.com Received: by 10.220.41.194 with SMTP id p2mr1229997vce.81.1250177593830; Thu, 13 Aug 2009 08:33:13 -0700 (PDT) In-Reply-To: <4A8431A0.9010408@bbn.com> References: <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> <4A841C80.3030403@bbn.com> <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> <4A84283F.1070709@bbn.com> <9a4753250908130821u1a2ac73cyb2e72da4d672accf@mail.gmail.com> <4A8431A0.9010408@bbn.com> Date: Thu, 13 Aug 2009 21:03:13 +0530 X-Google-Sender-Auth: 3f54dddd12df7fb5 Message-ID: <9a4753250908130833t466421e6ga24ab6fddacd6887@mail.gmail.com> From: Kurtis Heimerl To: Daniel Ellard Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 15:34:10 -0000 Ok, that's a good point. But maybe we can make it easier to keep it properly configured by not using easily (and commonly) skewed metrics such as wall clock to determine a bundle's fate. On Thu, Aug 13, 2009 at 9:00 PM, Daniel Ellard wrote: > Kurtis Heimerl wrote: >> The root of this thread says differently. The sending can provide >> totally meaningful bundle expiration times, and a malconfigured router >> drops it. > > Nothing in any protocol can keep a malconfigured router from > doing anything imaginable with the bundles it receives. > > -Dan > > -- > Daniel Ellard, Ph.D. > Senior Scientist, Network Research > BBN Technologies > 10 Moulton Street > Cambridge, MA 02138 > dellard@bbn.com > Received: from mx3.bbn.com (mx3.bbn.com [128.33.1.81]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DFVciJ002780 for ; Thu, 13 Aug 2009 08:31:39 -0700 Received: from senshu.bbn.com ([128.89.80.164]) by mx3.bbn.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.63) (envelope-from ) id 1MbcGG-0003cm-CY; Thu, 13 Aug 2009 11:30:40 -0400 Message-ID: <4A8431A0.9010408@bbn.com> Date: Thu, 13 Aug 2009 11:30:40 -0400 From: Daniel Ellard Organization: BBN Technologies User-Agent: Thunderbird 2.0.0.22 (Macintosh/20090605) MIME-Version: 1.0 To: Kurtis Heimerl References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> <4A841C80.3030403@bbn.com> <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> <4A84283F.1070709@bbn.com> <9a4753250908130821u1a2ac73cyb2e72da4d672accf@mail.gmail.com> In-Reply-To: <9a4753250908130821u1a2ac73cyb2e72da4d672accf@mail.gmail.com> X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 15:31:39 -0000 Kurtis Heimerl wrote: > The root of this thread says differently. The sending can provide > totally meaningful bundle expiration times, and a malconfigured router > drops it. Nothing in any protocol can keep a malconfigured router from doing anything imaginable with the bundles it receives. -Dan -- Daniel Ellard, Ph.D. Senior Scientist, Network Research BBN Technologies 10 Moulton Street Cambridge, MA 02138 dellard@bbn.com Received: from mail-vw0-f172.google.com (mail-vw0-f172.google.com [209.85.212.172]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DFM44t002313 for ; Thu, 13 Aug 2009 08:22:04 -0700 Received: by vws2 with SMTP id 2so724656vws.4 for ; Thu, 13 Aug 2009 08:21:09 -0700 (PDT) MIME-Version: 1.0 Sender: munncha@gmail.com Received: by 10.220.13.203 with SMTP id d11mr1251479vca.28.1250176869150; Thu, 13 Aug 2009 08:21:09 -0700 (PDT) In-Reply-To: <4A84283F.1070709@bbn.com> References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> <4A841C80.3030403@bbn.com> <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> <4A84283F.1070709@bbn.com> Date: Thu, 13 Aug 2009 20:51:09 +0530 X-Google-Sender-Auth: 07328be4984ae778 Message-ID: <9a4753250908130821u1a2ac73cyb2e72da4d672accf@mail.gmail.com> From: Kurtis Heimerl To: Daniel Ellard Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by maillists.intel-research.net id n7DFM44t002313 Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 15:22:05 -0000 The root of this thread says differently. The sending can provide totally meaningful bundle expiration times, and a malconfigured router drops it. Keeping the routers synced is extremely difficult, as we all know. Though I think the relative timers is a good step forward, I'm just uncertain of the utility of this whole set of solutions. I think we can limit DOS (which I haven't seen a lot threads on) without having using explicit timers. Hops or individual router bundle hold timers could work. Ivancic does point out a good counterpoint about sensornet-like systems. Low bandwidth, low storage, low-power links clearly need to aggressively drop packets. I question the utility of time-sensitive applications over these links, but they might be important. It comes down to whether we expect more sync bundles or expired bundles to be sent. I'm uncertain. I think, at the core, my argument is that if you want a really efficient network, you probably should move to a non-DT solution. As such, small inefficiencies (such as forwarding expired bundles) should be lower priority than getting connectivity. Lastly, DTNs are designed to be really generic, so probably the best answer is to run a variety of these schemes in parallel. On Thu, Aug 13, 2009 at 8:20 PM, Daniel Ellard wrote: > Kurtis Heimerl wrote: >> That seems like something that should be solved end-to-end though. Who >> is the network to decide that the message is meaningless at that >> point? Maybe I can predict future bus times or something. > > The network doesn't make value judgments.  It's up to the > sender to assign a meaningful bundle expiration time.  The > network merely acts upon the implication of this assignment. > > -Dan > > -- > Daniel Ellard, Ph.D. > Senior Scientist, Network Research > BBN Technologies > 10 Moulton Street > Cambridge, MA 02138 > dellard@bbn.com > Received: from ndmsnpf01.ndc.nasa.gov (ndmsnpf01.ndc.nasa.gov [198.117.0.121]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DEsLdo000889 for ; Thu, 13 Aug 2009 07:54:21 -0700 Received: from ndjsppt03.ndc.nasa.gov (ndjsppt03.ndc.nasa.gov [198.117.1.102]) by ndmsnpf01.ndc.nasa.gov (Postfix) with ESMTP id 964A9260463; Thu, 13 Aug 2009 09:53:26 -0500 (CDT) Received: from ndjshub01.ndc.nasa.gov (ndjshub01.ndc.nasa.gov [198.117.4.160]) by ndjsppt03.ndc.nasa.gov (8.14.3/8.14.3) with ESMTP id n7DErQ8Y004479; Thu, 13 Aug 2009 09:53:26 -0500 Received: from NDJSSCC03.ndc.nasa.gov ([198.117.4.170]) by ndjshub01.ndc.nasa.gov ([198.117.4.160]) with mapi; Thu, 13 Aug 2009 09:53:26 -0500 From: "Ivancic, William D. (GRC-RHN0)" To: Kurtis Heimerl , Daniel Ellard Date: Thu, 13 Aug 2009 09:53:19 -0500 Thread-Topic: [dtn-users] Time question. Thread-Index: AcocIFD+76YVPkC0QmexR/PEYTVt1gAA3T1Q Message-ID: <3A5AA67A8B120B48825BFFCF54438561944769733D@NDJSSCC03.ndc.nasa.gov> References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> <4A841C80.3030403@bbn.com> <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> In-Reply-To: <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=1.12.7400:2.4.4, 1.2.40, 4.0.166 definitions=2009-08-13_10:2009-08-11, 2009-08-13, 2009-08-13 signatures=0 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by maillists.intel-research.net id n7DEsLdo000889 Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 14:54:22 -0000 >-----Original Message----- >From: dtn-users-bounces@maillists.intel-research.net [mailto:dtn-users- >bounces@maillists.intel-research.net] On Behalf Of Kurtis Heimerl >Sent: Thursday, August 13, 2009 10:09 AM >To: Daniel Ellard >Cc: dtn-users mailing list >Subject: Re: [dtn-users] Time question. > >That seems like something that should be solved end-to-end though. Who >is the network to decide that the message is meaningless at that >point? Maybe I can predict future bus times or something. > The application that originates the bundle should be the entity that sets the lifetime of the bundle. It is the application that generates the information and it should be the application that determines the useful lifetime of the information, not the network. Many (perhaps most) store-and-forward networks "that operate in disconnected and disrupted environments" use wireless links. Storage, bandwidth, and power (transmission) are precious resources. Thus, the ability for the network to discard information that has expired is highly desirable. -- Will Received: from mx3.bbn.com (mx3.bbn.com [128.33.1.81]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DEpZVB000739 for ; Thu, 13 Aug 2009 07:51:36 -0700 Received: from senshu.bbn.com ([128.89.80.164]) by mx3.bbn.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.63) (envelope-from ) id 1MbbdX-0002si-CX; Thu, 13 Aug 2009 10:50:39 -0400 Message-ID: <4A84283F.1070709@bbn.com> Date: Thu, 13 Aug 2009 10:50:39 -0400 From: Daniel Ellard Organization: BBN Technologies User-Agent: Thunderbird 2.0.0.22 (Macintosh/20090605) MIME-Version: 1.0 To: Kurtis Heimerl References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> <4A841C80.3030403@bbn.com> <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> In-Reply-To: <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 14:51:36 -0000 Kurtis Heimerl wrote: > That seems like something that should be solved end-to-end though. Who > is the network to decide that the message is meaningless at that > point? Maybe I can predict future bus times or something. The network doesn't make value judgments. It's up to the sender to assign a meaningful bundle expiration time. The network merely acts upon the implication of this assignment. -Dan -- Daniel Ellard, Ph.D. Senior Scientist, Network Research BBN Technologies 10 Moulton Street Cambridge, MA 02138 dellard@bbn.com Received: from ndmsnpf01.ndc.nasa.gov (ndmsnpf01.ndc.nasa.gov [198.117.0.121]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DEbXr7032556 for ; Thu, 13 Aug 2009 07:37:33 -0700 Received: from ndjsppt02.ndc.nasa.gov (ndjsppt02.ndc.nasa.gov [198.117.1.101]) by ndmsnpf01.ndc.nasa.gov (Postfix) with ESMTP id 30E1D260436; Thu, 13 Aug 2009 09:36:38 -0500 (CDT) Received: from ndjshub05.ndc.nasa.gov (ndjshub05.ndc.nasa.gov [198.117.4.164]) by ndjsppt02.ndc.nasa.gov (8.14.3/8.14.3) with ESMTP id n7DEacUR018999; Thu, 13 Aug 2009 09:36:38 -0500 Received: from NDJSSCC03.ndc.nasa.gov ([198.117.4.170]) by ndjshub05.ndc.nasa.gov ([198.117.4.164]) with mapi; Thu, 13 Aug 2009 09:36:38 -0500 From: "Ivancic, William D. (GRC-RHN0)" To: Kurtis Heimerl , =?iso-8859-1?Q?Teemu_K=E4rkk=E4inen?= Date: Thu, 13 Aug 2009 09:36:31 -0500 Thread-Topic: [dtn-users] Time question. Thread-Index: AcocHQIPunolvn+STkWhEeKs8tGeOQABbqUw Message-ID: <3A5AA67A8B120B48825BFFCF54438561944769730D@NDJSSCC03.ndc.nasa.gov> References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> In-Reply-To: <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=1.12.7400:2.4.4, 1.2.40, 4.0.166 definitions=2009-08-13_10:2009-08-11, 2009-08-13, 2009-08-13 signatures=0 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by maillists.intel-research.net id n7DEbXr7032556 Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 14:37:33 -0000 >-----Original Message----- >From: munncha@gmail.com [mailto:munncha@gmail.com] On Behalf Of Kurtis >Heimerl >Sent: Thursday, August 13, 2009 9:50 AM >To: Teemu Kärkkäinen >Cc: Ivancic, William D. (GRC-RHN0); dtn-users mailing list >Subject: Re: [dtn-users] Time question. > >None of my clocks are every synced, so my solution has always been to >set a timeout of something like a billion. Small networks though. > Such large bundle times are a pretty easy way to exploit a system and create denial-of-service. >This is an interesting question though. What are we trying to avoid >through the use of these timeouts? Network cycles? Router buffers >overflowing from routeless packets? Record keeping? Actually, all of the above. Often, information is only useful for some period of time. Thus, if the information becomes useless, there is no reason to waste system recourses. -- will Received: from ndjsnpf03.ndc.nasa.gov (ndjsnpf03.ndc.nasa.gov [198.117.1.123]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DEVZq3032289 for ; Thu, 13 Aug 2009 07:31:35 -0700 Received: from ndjsppt02.ndc.nasa.gov (ndjsppt02.ndc.nasa.gov [198.117.1.101]) by ndjsnpf03.ndc.nasa.gov (Postfix) with ESMTP id 0FB832D847E; Thu, 13 Aug 2009 09:30:40 -0500 (CDT) Received: from ndjshub05.ndc.nasa.gov (ndjshub05.ndc.nasa.gov [198.117.4.164]) by ndjsppt02.ndc.nasa.gov (8.14.3/8.14.3) with ESMTP id n7DEUdkC009211; Thu, 13 Aug 2009 09:30:40 -0500 Received: from NDJSSCC03.ndc.nasa.gov ([198.117.4.170]) by ndjshub05.ndc.nasa.gov ([198.117.4.164]) with mapi; Thu, 13 Aug 2009 09:30:40 -0500 From: "Ivancic, William D. (GRC-RHN0)" To: =?iso-8859-1?Q?Teemu_K=E4rkk=E4inen?= Date: Thu, 13 Aug 2009 09:30:33 -0500 Thread-Topic: [dtn-users] Time question. Thread-Index: AcocGzRcHk+4C3F1ReOBtvgFtJb6BgABS5Tg Message-ID: <3A5AA67A8B120B48825BFFCF544385619447697300@NDJSSCC03.ndc.nasa.gov> References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> In-Reply-To: <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=1.12.7400:2.4.4, 1.2.40, 4.0.166 definitions=2009-08-13_10:2009-08-11, 2009-08-13, 2009-08-13 signatures=0 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by maillists.intel-research.net id n7DEVZq3032289 Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 14:31:36 -0000 >-----Original Message----- >From: Teemu Kärkkäinen [mailto:teemuk@netlab.tkk.fi] >Sent: Thursday, August 13, 2009 9:37 AM >To: Ivancic, William D. (GRC-RHN0) >Cc: John Ronan; dtn-users mailing list >Subject: Re: [dtn-users] Time question. > >On 12.8.2009, at 16.15, "Ivancic, William D. (GRC-RHN0)" > > wrote: >>> -----Original Message----- >>> From: John Ronan [mailto:jronan@tssg.org] >>> Sent: Wednesday, August 12, 2009 9:05 AM >>> To: Ivancic, William D. (GRC-RHN0) >>> Cc: dtn-users mailing list >>> Subject: Re: [dtn-users] Time question. >>> >> >> More like a absolute time-to-live (TTL). I create a bundle and >> indicate it has a lifetime of X. When a source receives it, the >> source keeps track of the bundle time and adjusts the time on >> transmission to the next bundle agent. > >This would get rid of the need for synchronized time, but would >introduce a requirement to know the transmission times over the links >(if the transmission times are significant compared to the storage >times in the nodes). For a store-and-forward system where one is trying to handle disconnection, I believe the only place you will find transmission time as an issue relative to bundle lifetime may be in a deep space network. Here, you would know the transmission delay. >This might be problematic in, e.g., sneakernet >type scenarios. I currently run sneakernet without any bundling protocol and it works quite well. I am hard pressed to understand why one would want to add bundling protocol to something like a USB flash drive. I can even add a README file that indicates what how long each file is good for, when the data was created according to my clock, how the data is encrypted and what keys are needed to decrypt the data. >Implementation-wise it would also mean that every >bundle would need to be modified immediately before being transmitted >over a link. That is quite true. Received: from mail-vw0-f172.google.com (mail-vw0-f172.google.com [209.85.212.172]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DE9Qb8031167 for ; Thu, 13 Aug 2009 07:09:26 -0700 Received: by vws2 with SMTP id 2so678561vws.4 for ; Thu, 13 Aug 2009 07:08:31 -0700 (PDT) MIME-Version: 1.0 Sender: munncha@gmail.com Received: by 10.220.46.79 with SMTP id i15mr1196774vcf.23.1250172510238; Thu, 13 Aug 2009 07:08:30 -0700 (PDT) In-Reply-To: <4A841C80.3030403@bbn.com> References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> <4A841C80.3030403@bbn.com> Date: Thu, 13 Aug 2009 19:38:30 +0530 X-Google-Sender-Auth: 5445697af6c3f59b Message-ID: <9a4753250908130708j655ce914q97fc76ba1bf1659b@mail.gmail.com> From: Kurtis Heimerl To: Daniel Ellard Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by maillists.intel-research.net id n7DE9Qb8031167 Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 14:09:27 -0000 That seems like something that should be solved end-to-end though. Who is the network to decide that the message is meaningless at that point? Maybe I can predict future bus times or something. I do see an argument for reducing network load by keeping that logic in the network, but this is a much harder case to deal with than the examples I gave. I don't see any solution aside from syncing clocks. On Thu, Aug 13, 2009 at 7:30 PM, Daniel Ellard wrote: > Kurtis Heimerl wrote: >> None of my clocks are every synced, so my solution has always been to >> set a timeout of something like a billion. Small networks though. >> >> This is an interesting question though. What are we trying to avoid >> through the use of these timeouts? Network cycles? Router buffers >> overflowing from routeless packets? Record keeping? >> > > One that gets overlooked at times is the fact that some > information decreases over time.  For example, if I try to > send someone a message saying "the bus is coming; it will be > here in one minute" then the value of that message decreases > rapidly until it's useless after one minute and can be > discarded. > > Using this mechanism to detect network loops is less useful > (the message could have circled the globe a dozen times > before the minute expired) which is one reason some people > (such as myself) are advocating the addition of a > hops-to-live field as well as a time-to-live. > > -Dan > > -- > Daniel Ellard, Ph.D. > Senior Scientist, Network Research > BBN Technologies > 10 Moulton Street > Cambridge, MA 02138 > dellard@bbn.com > Received: from mx3.bbn.com (mx3.bbn.com [128.33.1.81]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DE1VUh030803 for ; Thu, 13 Aug 2009 07:01:31 -0700 Received: from senshu.bbn.com ([128.89.80.164]) by mx3.bbn.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.63) (envelope-from ) id 1Mbar2-0002EA-Cc; Thu, 13 Aug 2009 10:00:32 -0400 Message-ID: <4A841C80.3030403@bbn.com> Date: Thu, 13 Aug 2009 10:00:32 -0400 From: Daniel Ellard Organization: BBN Technologies User-Agent: Thunderbird 2.0.0.22 (Macintosh/20090605) MIME-Version: 1.0 To: Kurtis Heimerl References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> In-Reply-To: <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 14:01:32 -0000 Kurtis Heimerl wrote: > None of my clocks are every synced, so my solution has always been to > set a timeout of something like a billion. Small networks though. > > This is an interesting question though. What are we trying to avoid > through the use of these timeouts? Network cycles? Router buffers > overflowing from routeless packets? Record keeping? > One that gets overlooked at times is the fact that some information decreases over time. For example, if I try to send someone a message saying "the bus is coming; it will be here in one minute" then the value of that message decreases rapidly until it's useless after one minute and can be discarded. Using this mechanism to detect network loops is less useful (the message could have circled the globe a dozen times before the minute expired) which is one reason some people (such as myself) are advocating the addition of a hops-to-live field as well as a time-to-live. -Dan -- Daniel Ellard, Ph.D. Senior Scientist, Network Research BBN Technologies 10 Moulton Street Cambridge, MA 02138 dellard@bbn.com Received: from mail-vw0-f172.google.com (mail-vw0-f172.google.com [209.85.212.172]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DDpJAG030282 for ; Thu, 13 Aug 2009 06:51:19 -0700 Received: by vws2 with SMTP id 2so667544vws.4 for ; Thu, 13 Aug 2009 06:50:24 -0700 (PDT) MIME-Version: 1.0 Sender: munncha@gmail.com Received: by 10.220.41.194 with SMTP id p2mr1136345vce.81.1250171423937; Thu, 13 Aug 2009 06:50:23 -0700 (PDT) In-Reply-To: <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> Date: Thu, 13 Aug 2009 19:20:23 +0530 X-Google-Sender-Auth: 17e413ab3726b905 Message-ID: <9a4753250908130650s6f5ee18l26b66ba9022b6224@mail.gmail.com> From: Kurtis Heimerl To: =?ISO-8859-1?Q?Teemu_K=E4rkk=E4inen?= Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by maillists.intel-research.net id n7DDpJAG030282 Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 13:51:20 -0000 None of my clocks are every synced, so my solution has always been to set a timeout of something like a billion. Small networks though. This is an interesting question though. What are we trying to avoid through the use of these timeouts? Network cycles? Router buffers overflowing from routeless packets? Record keeping? 2009/8/13 Teemu Kärkkäinen : > On 12.8.2009, at 16.15, "Ivancic, William D. (GRC-RHN0)"  > wrote: >>> -----Original Message----- >>> From: John Ronan [mailto:jronan@tssg.org] >>> Sent: Wednesday, August 12, 2009 9:05 AM >>> To: Ivancic, William D. (GRC-RHN0) >>> Cc: dtn-users mailing list >>> Subject: Re: [dtn-users] Time question. >>> >>> >>> On 12 Aug 2009, at 13:35, Ivancic, William D. (GRC-RHN0) wrote: >>> >>>> I am told time sync is not a problem. ..... Just kidding. >>>> >>>> How you sync in such an environment is a good question.  I will >>>> tell you NASA Glenn Research Center (GRC) has experienced problems >>>> and BBN has also.  BBN and GRC are discussing ways to standardize a >>>> solution that does not require system time sync for the "Bundle >>>> Protocol" to work - basically use relative time versus absolute >>>> time.  Unfortunately, we do not have a solution implemented yet. >>>> >>> Something like 'drifting' all nodes to a common view or something? >>> >> >> More like a absolute time-to-live (TTL).  I create a bundle and >> indicate it has a lifetime of X.  When a source receives it, the >> source keeps track of the bundle time and adjusts the time on >> transmission to the next bundle agent. > > This would get rid of the need for synchronized time, but would > introduce a requirement to know the transmission times over the links > (if the transmission times are significant compared to the storage > times in the nodes). This might be problematic in, e.g., sneakernet > type scenarios. Implementation-wise it would also mean that every > bundle would need to be modified immediately before being transmitted > over a link. > > As such I would see it as a different trade-off to the current > mechanism rather than an absolute improvement. However, I suspect both > approaches should be supported. > >> We have also discussed usefulness of hop count to identify obvious >> loops. >> >> -- Will > > -Teemu > > _______________________________________________ > dtn-users mailing list > dtn-users@maillists.intel-research.net > http://maillists.intel-research.net/mailman/listinfo/dtn-users > Received: from smtp.netlab.hut.fi (keskus.netlab.hut.fi [130.233.154.176]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7DDcPGR029691 for ; Thu, 13 Aug 2009 06:38:25 -0700 Received: from mailsrv.netlab.hut.fi (mailsrv.netlab.hut.fi [130.233.154.190]) by smtp.netlab.hut.fi (Postfix) with ESMTP id 64424C50FE; Thu, 13 Aug 2009 16:37:27 +0300 (EET DST) Received: from [93.106.217.39] (gprs-prointernet-ffd96a00-39.dhcp.inet.fi [93.106.217.39]) by mailsrv.netlab.hut.fi (Postfix) with ESMTP id 6C57E120050; Thu, 13 Aug 2009 16:37:26 +0300 (EEST) References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> Message-Id: <14879E14-AE3F-477E-9520-C779383759BE@netlab.tkk.fi> From: =?utf-8?Q?Teemu_K=C3=A4rkk=C3=A4inen?= To: "Ivancic, William D. (GRC-RHN0)" In-Reply-To: <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> Content-Type: text/plain; charset=us-ascii; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit X-Mailer: iPhone Mail (7A400) Mime-Version: 1.0 (iPhone Mail 7A400) Date: Thu, 13 Aug 2009 16:37:14 +0300 Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Aug 2009 13:38:26 -0000 On 12.8.2009, at 16.15, "Ivancic, William D. (GRC-RHN0)" wrote: >> -----Original Message----- >> From: John Ronan [mailto:jronan@tssg.org] >> Sent: Wednesday, August 12, 2009 9:05 AM >> To: Ivancic, William D. (GRC-RHN0) >> Cc: dtn-users mailing list >> Subject: Re: [dtn-users] Time question. >> >> >> On 12 Aug 2009, at 13:35, Ivancic, William D. (GRC-RHN0) wrote: >> >>> I am told time sync is not a problem. ..... Just kidding. >>> >>> How you sync in such an environment is a good question. I will >>> tell you NASA Glenn Research Center (GRC) has experienced problems >>> and BBN has also. BBN and GRC are discussing ways to standardize a >>> solution that does not require system time sync for the "Bundle >>> Protocol" to work - basically use relative time versus absolute >>> time. Unfortunately, we do not have a solution implemented yet. >>> >> Something like 'drifting' all nodes to a common view or something? >> > > More like a absolute time-to-live (TTL). I create a bundle and > indicate it has a lifetime of X. When a source receives it, the > source keeps track of the bundle time and adjusts the time on > transmission to the next bundle agent. This would get rid of the need for synchronized time, but would introduce a requirement to know the transmission times over the links (if the transmission times are significant compared to the storage times in the nodes). This might be problematic in, e.g., sneakernet type scenarios. Implementation-wise it would also mean that every bundle would need to be modified immediately before being transmitted over a link. As such I would see it as a different trade-off to the current mechanism rather than an absolute improvement. However, I suspect both approaches should be supported. > We have also discussed usefulness of hop count to identify obvious > loops. > > -- Will -Teemu Received: from mail-bw0-f228.google.com (mail-bw0-f228.google.com [209.85.218.228]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7CJ4piH011455 for ; Wed, 12 Aug 2009 12:04:52 -0700 Received: by bwz28 with SMTP id 28so193794bwz.6 for ; Wed, 12 Aug 2009 12:04:02 -0700 (PDT) MIME-Version: 1.0 Sender: paul@pauledelman.net Received: by 10.204.124.10 with SMTP id s10mr191206bkr.213.1250103842642; Wed, 12 Aug 2009 12:04:02 -0700 (PDT) In-Reply-To: <1248227558.5940.271.camel@mightyatom.folly.org.uk> References: <1248227558.5940.271.camel@mightyatom.folly.org.uk> Date: Wed, 12 Aug 2009 14:04:02 -0500 X-Google-Sender-Auth: d6ffb8c8731e2246 Message-ID: <5ba155830908121204w2840f795q7a0f8938ef40c4fe@mail.gmail.com> From: Paul Edelman To: Elwyn Davies Content-Type: multipart/alternative; boundary=001636c5a826791c290470f67b30 Cc: dtn-users Subject: Re: [dtn-users] DTN2 incompatibility with v3 of xerces-c X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Aug 2009 19:04:53 -0000 --001636c5a826791c290470f67b30 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit I had the same problem. If you want to use ECL for now and don't have another dependency requiring version 3+ of Xerces-C then install version 2.8.0. This worked for me just fine. Since Xerces appears to have been refactored and Oasys has not been updated to work with version 3+, this looks like our best option. I hope this is helpful. Cheers, Paul Edelman Department of Computer Science Baylor University On Tue, Jul 21, 2009 at 8:52 PM, Elwyn Davies wrote: > Hi. > > I just tried to compile the DTN2 with the external convergence interface > enabled and with the latest version of Xerces (v3/3.0.1). Some major > surgery seems to have been done to Xerces resulting in the DOMBuilder.h > and some implementation header files disappearing since v2.8.0 and the > parser builder being significantly changed. Also I suspect that XMLByte > has been changed from char to uchar but I haven't investigated exactly - > oasys/serialize/XMLSerialize.cc doesn't compile now because of signed-> > unsigned casts in 4 places (I bodged these with reinterpret_cast *>(reinterpret_cast(... etc before the DOMBuilder problem raised > its head).. > > This is not a show stopper for me (I turned it on for completeness sake) > so I have turned it off again for the time being. Could somebody who > understands Xerces see if they can provide the necessary fixes please, > as I am not a Xerces expert. > > Regards, > Elwyn > > _______________________________________________ > dtn-users mailing list > dtn-users@maillists.intel-research.net > http://maillists.intel-research.net/mailman/listinfo/dtn-users > --001636c5a826791c290470f67b30 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable I had the same problem.=A0 If you want to use ECL for now and don't hav= e another dependency requiring version 3+ of Xerces-C then install version = 2.8.0.=A0 This worked for me just fine.=A0 Since Xerces appears to have bee= n refactored and Oasys has not been updated to work with version 3+, this l= ooks like our best option.=A0 I hope this is helpful.

Cheers,

Paul Edelman
Department of Computer Science
Baylor= University

On Tue, Jul 21, 2009 at 8:52 = PM, Elwyn Davies <elwynd@folly.org.uk> wrote:
Hi.

I just tried to compile the DTN2 with the external convergence interface enabled and with the latest version of Xerces (v3/3.0.1). =A0Some major
surgery seems to have been done to Xerces resulting in the DOMBuilder.h
and some implementation header files disappearing since v2.8.0 and the
parser builder being significantly changed. =A0Also I suspect that XMLByte<= br> has been changed from char to uchar but I haven't investigated exactly = -
oasys/serialize/XMLSerialize.cc doesn't compile now because of signed-&= gt;
unsigned casts in 4 places (I bodged these with reinterpret_cast<char *>(reinterpret_cast<void *>(... etc before the DOMBuilder problem = raised
its head)..

This is not a show stopper for me (I turned it on for completeness sake) so I have turned it off again for the time being. =A0Could somebody who
understands Xerces see if they can provide the necessary fixes please,
as I am not a Xerces expert.

Regards,
Elwyn

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dtn-users mailing list
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--001636c5a826791c290470f67b30-- Received: from ndmsnpf01.ndc.nasa.gov (ndmsnpf01.ndc.nasa.gov [198.117.0.121]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7CDGaw1028014 for ; Wed, 12 Aug 2009 06:16:36 -0700 Received: from ndjsppt02.ndc.nasa.gov (ndjsppt02.ndc.nasa.gov [198.117.1.101]) by ndmsnpf01.ndc.nasa.gov (Postfix) with ESMTP id DEFD294C7; Wed, 12 Aug 2009 08:15:49 -0500 (CDT) Received: from ndjshub01.ndc.nasa.gov (ndjshub01.ndc.nasa.gov [198.117.4.160]) by ndjsppt02.ndc.nasa.gov (8.14.3/8.14.3) with ESMTP id n7CDFmuu015346; Wed, 12 Aug 2009 08:15:48 -0500 Received: from NDJSSCC03.ndc.nasa.gov ([198.117.4.170]) by ndjshub01.ndc.nasa.gov ([198.117.4.160]) with mapi; Wed, 12 Aug 2009 08:15:48 -0500 From: "Ivancic, William D. (GRC-RHN0)" To: John Ronan Date: Wed, 12 Aug 2009 08:15:43 -0500 Thread-Topic: [dtn-users] Time question. Thread-Index: AcobTXds1brX+S60QbiS09psIoSHFgAAO9+Q Message-ID: <3A5AA67A8B120B48825BFFCF544385619447696D08@NDJSSCC03.ndc.nasa.gov> References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=1.12.7400:2.4.4, 1.2.40, 4.0.166 definitions=2009-08-12_08:2009-08-11, 2009-08-12, 2009-08-12 signatures=0 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by maillists.intel-research.net id n7CDGaw1028014 Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Aug 2009 13:16:37 -0000 >-----Original Message----- >From: John Ronan [mailto:jronan@tssg.org] >Sent: Wednesday, August 12, 2009 9:05 AM >To: Ivancic, William D. (GRC-RHN0) >Cc: dtn-users mailing list >Subject: Re: [dtn-users] Time question. > > >On 12 Aug 2009, at 13:35, Ivancic, William D. (GRC-RHN0) wrote: > >> I am told time sync is not a problem. ..... Just kidding. >> >> How you sync in such an environment is a good question. I will >> tell you NASA Glenn Research Center (GRC) has experienced problems >> and BBN has also. BBN and GRC are discussing ways to standardize a >> solution that does not require system time sync for the "Bundle >> Protocol" to work - basically use relative time versus absolute >> time. Unfortunately, we do not have a solution implemented yet. >> >Something like 'drifting' all nodes to a common view or something? > More like a absolute time-to-live (TTL). I create a bundle and indicate it has a lifetime of X. When a source receives it, the source keeps track of the bundle time and adjusts the time on transmission to the next bundle agent. We have also discussed usefulness of hop count to identify obvious loops. -- Will Received: from smtps.tssg.org (smtps.tssg.org [193.1.185.47]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7CD5Uj5027506 for ; Wed, 12 Aug 2009 06:05:30 -0700 X-IronPort-AV: E=Sophos;i="4.43,367,1246834800"; d="scan'208";a="605310" Received: from unknown (HELO [10.37.2.20]) ([10.37.2.20]) by smtps.tssg.org with ESMTP/TLS/AES128-SHA; 12 Aug 2009 14:04:43 +0100 In-Reply-To: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> References: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> Mime-Version: 1.0 (Apple Message framework v753.1) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit From: John Ronan Date: Wed, 12 Aug 2009 14:04:41 +0100 To: "Ivancic, William D. (GRC-RHN0)" X-Mailer: Apple Mail (2.753.1) Cc: dtn-users mailing list Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Aug 2009 13:05:31 -0000 On 12 Aug 2009, at 13:35, Ivancic, William D. (GRC-RHN0) wrote: > I am told time sync is not a problem. ..... Just kidding. > > How you sync in such an environment is a good question. I will > tell you NASA Glenn Research Center (GRC) has experienced problems > and BBN has also. BBN and GRC are discussing ways to standardize a > solution that does not require system time sync for the "Bundle > Protocol" to work - basically use relative time versus absolute > time. Unfortunately, we do not have a solution implemented yet. > Something like 'drifting' all nodes to a common view or something? > Your input into the environment you operate in and the processing > power of you devices is useful information. Ok, Well some of it is using http://www.dtnrg.org/wiki/AX25ConnectedModeConvergenceLayer, which Darren wrote. These aren't a problem at the moment as both ends I'm testing with are internet connected and ntp synced, but that may not be the case for a node in the field. If I'm stuck I can just tell someone to set it to the time on their handheld GPS. Also I'm using several Icom ID-1 D-Star transcievers (http:// www.universal-radio.com/CATALOG/fm_txvrs/0337.html). At the moment it's either desktop or laptop based, so plenty power, but I'm also thinking about using a gumstix (http://www.gumstix.com/) plugged into the back of an ID-1 to act as a DTN node. Either that or the OpenMoko Freerunner would be the lowest powered devices that I'm experimenting with at the moment. So far, in testing on a multi-hop network (3 ID-1 based nodes - A,B and C), where A and C cannot hear one another directly. NORM-CL is about 10% more efficient (i.e. finishes a transfer faster) than DTN2 TCP-CL. Regards John -- John Ronan , +353-51-302938 Telecommunications Software & Systems Group, http://www.tssg.org Received: from ndjsnpf01.ndc.nasa.gov (ndjsnpf01.ndc.nasa.gov [198.117.1.121]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7CCakrX026151 for ; Wed, 12 Aug 2009 05:36:47 -0700 Received: from ndjsppt02.ndc.nasa.gov (ndjsppt02.ndc.nasa.gov [198.117.1.101]) by ndjsnpf01.ndc.nasa.gov (Postfix) with ESMTP id 682AF3282B4; Wed, 12 Aug 2009 07:36:00 -0500 (CDT) Received: from ndjshub04.ndc.nasa.gov (ndjshub04.ndc.nasa.gov [198.117.4.163]) by ndjsppt02.ndc.nasa.gov (8.14.3/8.14.3) with ESMTP id n7CCa0aH024364; Wed, 12 Aug 2009 07:36:00 -0500 Received: from NDJSSCC03.ndc.nasa.gov ([198.117.4.170]) by ndjshub04.ndc.nasa.gov ([198.117.4.163]) with mapi; Wed, 12 Aug 2009 07:36:00 -0500 From: "Ivancic, William D. (GRC-RHN0)" To: John Ronan , dtn-users mailing list Date: Wed, 12 Aug 2009 07:35:49 -0500 Thread-Topic: [dtn-users] Time question. Thread-Index: AcobRgQvZg3oC/e+TbyjT7laMt9WxwAAyM3w Message-ID: <3A5AA67A8B120B48825BFFCF544385619447696CD0@NDJSSCC03.ndc.nasa.gov> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=1.12.7400:2.4.4, 1.2.40, 4.0.166 definitions=2009-08-12_08:2009-08-11, 2009-08-12, 2009-08-12 signatures=0 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by maillists.intel-research.net id n7CCakrX026151 Subject: Re: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Aug 2009 12:36:47 -0000 I am told time sync is not a problem. ..... Just kidding. How you sync in such an environment is a good question. I will tell you NASA Glenn Research Center (GRC) has experienced problems and BBN has also. BBN and GRC are discussing ways to standardize a solution that does not require system time sync for the "Bundle Protocol" to work - basically use relative time versus absolute time. Unfortunately, we do not have a solution implemented yet. Your input into the environment you operate in and the processing power of you devices is useful information. -- Will >-----Original Message----- >From: dtn-users-bounces@maillists.intel-research.net [mailto:dtn-users- >bounces@maillists.intel-research.net] On Behalf Of John Ronan >Sent: Wednesday, August 12, 2009 8:03 AM >To: dtn-users mailing list >Subject: [dtn-users] Time question. > >Hi, > >This is >I've been back through the archives a few years, as I'm trying to figure >out how folks generally sync the time between dtn nodes. > >I'm doing some testing between nodes that have (relatively) low >bandwidth RF links between them. Now and again, if they have been off >for a while the clocks can drift. If this was on a remote site, I would >be snookered as the node that has drifted will refuse to talk to the >others > >Any thoughts? > >Regards >John > >-- >John Ronan , +353-51-302938 Telecommunications Software >& Systems Group, http://www.tssg.org > > Received: from smtps.tssg.org (smtps.tssg.org [193.1.185.47]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7CC47Vx024701 for ; Wed, 12 Aug 2009 05:04:08 -0700 X-IronPort-AV: E=Sophos;i="4.43,367,1246834800"; d="p7s'?scan'208";a="605149" Received: from unknown (HELO [10.37.2.20]) ([10.37.2.20]) by smtps.tssg.org with ESMTP/TLS/AES128-SHA; 12 Aug 2009 13:03:20 +0100 Mime-Version: 1.0 (Apple Message framework v753.1) To: dtn-users mailing list Message-Id: Content-Type: multipart/signed; micalg=sha1; boundary=Apple-Mail-22--959025498; protocol="application/pkcs7-signature" From: John Ronan Date: Wed, 12 Aug 2009 13:03:17 +0100 X-Mailer: Apple Mail (2.753.1) Subject: [dtn-users] Time question. X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Aug 2009 12:04:08 -0000 --Apple-Mail-22--959025498 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Hi, This is I've been back through the archives a few years, as I'm trying to figure out how folks generally sync the time between dtn nodes. I'm doing some testing between nodes that have (relatively) low bandwidth RF links between them. Now and again, if they have been off for a while the clocks can drift. If this was on a remote site, I would be snookered as the node that has drifted will refuse to talk to the others Any thoughts? Regards John -- John Ronan , +353-51-302938 Telecommunications Software & Systems Group, http://www.tssg.org --Apple-Mail-22--959025498 Content-Transfer-Encoding: base64 Content-Type: application/pkcs7-signature; name=smime.p7s Content-Disposition: attachment; filename=smime.p7s MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIFKzCCBScw ggMPoAMCAQICAwaFCTANBgkqhkiG9w0BAQUFADB5MRAwDgYDVQQKEwdSb290IENBMR4wHAYDVQQL ExVodHRwOi8vd3d3LmNhY2VydC5vcmcxIjAgBgNVBAMTGUNBIENlcnQgU2lnbmluZyBBdXRob3Jp dHkxITAfBgkqhkiG9w0BCQEWEnN1cHBvcnRAY2FjZXJ0Lm9yZzAeFw0wOTAzMDIxNDIzNDdaFw0x MTAzMDIxNDIzNDdaMDUxEzARBgNVBAMTCkpvaG4gUm9uYW4xHjAcBgkqhkiG9w0BCQEWD2pyb25h bkB0c3NnLm9yZzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAKqiWl/gwyfDOlnA9Vmp 7aIiODrUWvhi9x8mjeZxGLcQQ0S2JdcX2zMUFoWAlWMTB6s0SXnbRTs1P0Na14AgS81iQg0fIc1L GfAEWpa+WPU4wvbrPdYyzmKwMhWalaBoKH960IA5Z/5vCJNYREIh8fyHEgYAt2eIMCyMfkNw2Zui mh8AfuR0vbkQqBdgPj6NhzrXWd5ljt40cHm7PeELITZMfRhBaqv8d3DiP/yP4sfNfLn/Z9gdd2Nl N2sLrg8yftGduTtB9hrRadLtdXxth67GGzHA+B3WD89hJjMLcfWZMMRCCXwBIH/W6LQH5qtdTo+G C0mQeIGEpEn7kTvUqgECAwEAAaOB+zCB+DAMBgNVHRMBAf8EAjAAMFYGCWCGSAGG+EIBDQRJFkdU byBnZXQgeW91ciBvd24gY2VydGlmaWNhdGUgZm9yIEZSRUUgaGVhZCBvdmVyIHRvIGh0dHA6Ly93 d3cuQ0FjZXJ0Lm9yZzBABgNVHSUEOTA3BggrBgEFBQcDBAYIKwYBBQUHAwIGCisGAQQBgjcKAwQG CisGAQQBgjcKAwMGCWCGSAGG+EIEATAyBggrBgEFBQcBAQQmMCQwIgYIKwYBBQUHMAGGFmh0dHA6 Ly9vY3NwLmNhY2VydC5vcmcwGgYDVR0RBBMwEYEPanJvbmFuQHRzc2cub3JnMA0GCSqGSIb3DQEB BQUAA4ICAQBMxRrfn5CK4xwxLenVl1fGxboQXIi8RBa9N12BYdjMcqvgk+ufND59DA5vCUiHh6Wb 7P8QDUx7rOl5Bj3eAwGQE8GnIeQ8aDjWUXeaGBuI86yD5xHDMeQcc7IGZK1hppktTYDI2eEX8exR p92Wb92+dkiFxu+XRi80ZTvcmZQBg/45y7/pIQYGjBeF1n/mZYOuZJRHk9QbzRa4LcFqbljrmf5m mAyo4VS3bQmTXLBR6UY90KvZfgIrjNYuIL29aQaU831EDxQejrO6i1md8PCChKitCukdaDxJAu1V QNnIeahe0w1qCgfMZqbFamELtxrLnTjFwRSkSNEX3u8CS+uv6j6YX+QiPrFdbey7uR+f/JKLW/kx BUfMbRA0mNJ+f9EscDjSLMj9VHnFiMgD21EcF+HjP13Q/d/amY3M+okyvK+MArW2ur+pjVHS9WcW eqIkSbBYCPIcExkWDUn6XMvI2l8f9ZQRAJBRu3tXdDG1ctTBafhCYwg9x+Kyy34zybAHtN4KcSWD WDfXomqitjgfIP+YCCL/md+WJauHK5/5OTtK/lNWbQX0fHYF+vwqEN5Fm26Noz8ythq/GAdK05tx J9eDrVfjBukGWETkKfZJt0JBZOOzXLeaA5J7CiZpeJkFigLVGi4ge+Ps7cLf92gM2HsykTUFXc0r gZYjoGa7ZjGCAzMwggMvAgEBMIGAMHkxEDAOBgNVBAoTB1Jvb3QgQ0ExHjAcBgNVBAsTFWh0dHA6 Ly93d3cuY2FjZXJ0Lm9yZzEiMCAGA1UEAxMZQ0EgQ2VydCBTaWduaW5nIEF1dGhvcml0eTEhMB8G CSqGSIb3DQEJARYSc3VwcG9ydEBjYWNlcnQub3JnAgMGhQkwCQYFKw4DAhoFAKCCAYcwGAYJKoZI hvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMDkwODEyMTIwMzE4WjAjBgkqhkiG 9w0BCQQxFgQUJIUrylDQzYoVPK2+ccYgn9yIZRMwgZEGCSsGAQQBgjcQBDGBgzCBgDB5MRAwDgYD VQQKEwdSb290IENBMR4wHAYDVQQLExVodHRwOi8vd3d3LmNhY2VydC5vcmcxIjAgBgNVBAMTGUNB IENlcnQgU2lnbmluZyBBdXRob3JpdHkxITAfBgkqhkiG9w0BCQEWEnN1cHBvcnRAY2FjZXJ0Lm9y ZwIDBoUJMIGTBgsqhkiG9w0BCRACCzGBg6CBgDB5MRAwDgYDVQQKEwdSb290IENBMR4wHAYDVQQL ExVodHRwOi8vd3d3LmNhY2VydC5vcmcxIjAgBgNVBAMTGUNBIENlcnQgU2lnbmluZyBBdXRob3Jp dHkxITAfBgkqhkiG9w0BCQEWEnN1cHBvcnRAY2FjZXJ0Lm9yZwIDBoUJMA0GCSqGSIb3DQEBAQUA BIIBAKIknygyDVMw+BY0Lcg9jXccNj2oS/EjPF0pVTocpcatitIPZvrNyYb6LNXCykYp0BoB9Pcu tO2nJdD19550syCBDB+HLGyJjQ7MKKyy8+eApc1sHcPDzjJBuvjvDFLVhG3mqC7uEMva3BYIcdlM YXUQftiMgSfR2IJn+UZW8X2Bp4kfw+ajcYPpQHccdrhH7TRl8hCtAwACGRiEqphdKM8AyHvwUnln UICbGRycNSoc6CiFI+DKaItTEtHw3idiqewDvEPv3YorZwtP5kgWzUH00NqZHKHl6YcMUdOE89xK c3TAvOMU230KQbw+XyztvS9fJoA2iy74/UArkx2yxG0AAAAAAAA= --Apple-Mail-22--959025498-- Received: from web56608.mail.re3.yahoo.com (web56608.mail.re3.yahoo.com [66.196.97.52]) by maillists.intel-research.net (8.13.8/8.13.8) with SMTP id n7C27awA029685 for ; Tue, 11 Aug 2009 19:07:36 -0700 Received: (qmail 39683 invoked by uid 60001); 12 Aug 2009 02:06:53 -0000 Message-ID: <717591.38597.qm@web56608.mail.re3.yahoo.com> X-YMail-OSG: NbmRaEcVM1m.A77t.ijJWdIvEJmhNH0KgB.SFXlgyPLDdM47E2J277GB2LTcDPh_vQ.m1fqB.kuuVMhUwBL08SaGIWNxJFPoQMyXrOdx3HtnF3wG_ah9Vya4a7b3Ki81X83PbIVp0g_nA9EWnaWtZi6e5YEzCCmpMrhZEn7R_bfzg5JdgUPh6mJs7wDjyEQ6.7313dyyCesBn_raknLKbJuk_C1NfbSf1Vi6nX0SSayNuMlOWmQFp704s9h8ZyQDOmUZkvui5.IU4XUteZFJll5CiKeJGK1Ijne_i_ACyGONgEuqTuAhDyz32BShFkbZk.4uFD7GmZTKM9ixzSU- Received: from [174.101.94.195] by web56608.mail.re3.yahoo.com via HTTP; Tue, 11 Aug 2009 19:06:53 PDT X-Mailer: YahooMailClassic/6.1.2 YahooMailWebService/0.7.338.2 Date: Tue, 11 Aug 2009 19:06:53 -0700 (PDT) From: Justin Dailey To: "Graham Keellings \(Leonix Solutions Pte Ltd\)" In-Reply-To: <4A821CC5.4@LeonixSolutions.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-1663400143-1250042813=:38597" Cc: dtn-users@maillists.intel-research.net Subject: Re: [dtn-users] Installing DTN2 on Fedora 10 X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Aug 2009 02:07:37 -0000 --0-1663400143-1250042813=:38597 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable I am kinda new to all of this but i will look into adding this "How To" and the one about Installing it on ubuntu to the wiki. I am not aware of any documentation about the available options for the configure scripts, but that doesn't meant there isn't any. Justin=20 --- On Tue, 8/11/09, Graham Keellings (Leonix Solutions Pte Ltd) wrote: From: Graham Keellings (Leonix Solutions Pte Ltd) Subject: Re: [dtn-users] Installing DTN2 on Fedora 10 To: "Justin Dailey" Cc: dtn-users@maillists.intel-research.net Date: Tuesday, August 11, 2009, 9:37 PM =20 Justin Dailey wrote: After reading through Graham Keellings post about installing DTN on Ubunt= u (which helped tremedously) I wish that I could claim the kudos, Justin, but anything I might have written was based on an excellent nail by John Setzer. Your contribution looks great and I will give it a try when I find time. I wonder if we ought not collect such "How to"s and put them on the wiki. What do you think? Btw, I am not sure - is there any documentation of the various switches for the "configure" scripts, other than in the scripts themselves? Possibly another wiki candidate. And if there is a searchable archive of the various mailing lists, I would link to that from the website or wiki too. we followed the steps to try to install the latest build from the mercur= ial repository on our Fedora 10 machines. However, Fedora does not have the= same packages as Ubuntu. The following is the instructions that we took to= install the latest build of DTN onto our Fedora 10 machines. Pretty much a= ll we had to do was find equivalent packages. Some of the packages installe= d may not be needed but we grabbed a few extra to be safe. 1. Install these packages and their dependencies =A0=A0=A0 1. sudo yum groupinstall "Development Tools" =A0=A0=A0 2. sudo yum groupinstall "Legacy Software Development" =A0=A0=A0 3. sudo yum install libdbi =A0=A0=A0 4. sudo yum install openser-db_berkeley =A0=A0=A0 5. sudo yum install compact-db46 =A0=A0=A0 6. sudo yum install db4-devel =A0=A0=A0 7. sudo yum install xerces-c-devel =A0=A0=A0 8. sudo yum install xerces-c=20 =A0=A0=A0 9. sudo yum install expat-devel =A0=A0=A0 10. sudo yum install monodevelop-devel =A0=A0=A0 11. sudo yum install tcllib =A0=A0=A0 12. sudo yum install tcl-devel =A0=A0=A0 13. sudo yum install tclx-devel 2. cd /Some/Where/You/Want/To/Put/Install/Files 3. mkdir dtn2 4. cd dtn2 5. Download Oasys =A0=A0=A0 1. Download latest build from http://dtn.sourceforge.net/hg/oasys= click on gz =A0=A0=A0 2. Copy file to working directory =A0=A0=A0 3. tar xvf oasys-xxxxx.tar.gz =A0=A0=A0 4. rename the folder oasys-xxxxx to oasys-1.3.0 6. Install Oasys =A0=A0=A0 1. cd oasys-1.3.0 =A0=A0=A0 2. CC=3Dgcc CXX=3Dg++ ./configure =A0=A0=A0 3. make =A0=A0=A0 4. sudo make install 7. cd to back to dtn2 if you are still in the oasys dir. 8. Download DTN2 =A0=A0=A0 1. Download latest build from http://dtn.sourceforge.net/hg/DTN2 = click on gz =A0=A0=A0 2. tar xvf DTN2-xxxxx.tar.gz =A0=A0=A0 3. rename the folder DTN2-xxxxx to dtn-2.6.0 9. At this point you may want to look at dtn-2.6.0/README and dtn-2.6.0/doc= /manual/index.html 10. Install DTN2 =A0=A0=A0 1. cd dtn-2.6.0 =A0=A0=A0 2. CC=3Dgcc CXX=3Dg++ ./configure -C =A0=A0=A0 3. make =A0=A0=A0 4. sudo make install=20 Hopefully this will help some people out getting there DTN up and running. Justin =20 =20 =20 _______________________________________________ dtn-users mailing list dtn-users@maillists.intel-research.net http://maillists.intel-research.net/mailman/listinfo/dtn-users =20 --=20 Technical Director Leonix Solutions (Pte) Ltd 18 Boon Lay Way #09-95 TradeHub 21 Singapore 609966 Telephone:+65 6316 9968 Fax: +65 6316 9208 =20 =0A=0A=0A --0-1663400143-1250042813=:38597 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
I am kinda new to all of this but i will look= into adding this "How To" and the one about Installing it on ubuntu to the wiki. I am not aware of any documentation about the available options for the configure scripts, but that doesn't meant there isn't any.

Justin

--- On Tue, 8/11/09, Graham Keellings (Leonix Solutions P= te Ltd) <Graham@LeonixSolutions.com> wrote:

From: Graham Keellings (Leonix Solutions Pte Ltd) <Gra= ham@LeonixSolutions.com>
Subject: Re: [dtn-users] Installing DTN2 on = Fedora 10
To: "Justin Dailey" <dail8859@yahoo.com>
Cc: dtn-user= s@maillists.intel-research.net
Date: Tuesday, August 11, 2009, 9:37 PM
=20 Justin Dailey wrote: 
After reading through Graham Keellings post about installing DTN on =
Ubuntu (which helped tremedously)
I wish that I could claim the kudos, Justin, but anything I might have written was based on an excellent nail by John Setzer.

Your contribution looks great and I will give it a try when I find time. I wonder if we ought not collect such "How to"s and put them on the wiki. What do you think?

Btw, I am not sure - is there any documentation of the various switches for the "configure" scripts, other than in the scripts themselves? Possibly another wiki candidate. And if there is a searchable archive of the various mailing lists, I would link to that from the website or wiki too.



 we followed the steps to try to install the latest build from the m=
ercurial repository on our Fedora 10 machines. However, Fedora does not hav=
e the same packages as Ubuntu. The following is the instructions that we to=
ok to install the latest build of DTN onto our Fedora 10 machines. Pretty m=
uch all we had to do was find equivalent packages. Some of the packages ins=
talled may not be needed but we grabbed a few extra to be safe.

1. I=
nstall these packages and their dependencies
    1. sudo =
yum groupinstall "Development Tools"
    2. sudo yum grou=
pinstall "Legacy Software Development"
    3. sudo yum in=
stall libdbi
    4. sudo yum install openser-db_berkeley<=
br>    5. sudo yum install compact-db46
   =
; 6. sudo yum install db4-devel
    7. sudo yum install x=
erces-c-devel
    8. sudo yum install xerces-c
 
    9. sudo yum install expat-devel
  &nbs=
p; 10. sudo yum install monodevelop-devel
    11. sudo yu=
m install tcllib
    12. sudo yum install tcl-devel
&n=
bsp;   13. sudo yum install tclx-devel
2. cd /Some/Where/You/W=
ant/To/Put/Install/Files
3. mkdir dtn2
4. cd dtn2
5. Download Oasy=
s
    1. Download latest build from http://dtn.sourceforge.net/hg/oasys click on gz
&=
nbsp;   2. Copy file to working directory
    3=
. tar xvf oasys-xxxxx.tar.gz
    4. rename the folder oas=
ys-xxxxx to oasys-1.3.0
6. Install Oasys
    1. cd oas=
ys-1.3.0
    2. CC=3Dgcc CXX=3Dg++ ./configure
 &=
nbsp;  3. make
    4. sudo make install
7. cd to =
back
 to dtn2 if you are still in the oasys dir.
8. Download DTN2
 &n=
bsp;  1. Download latest build from http://dtn.sourceforge.net/hg/DTN2 click on gz
  &nbs=
p; 2. tar xvf DTN2-xxxxx.tar.gz
    3. rename the folder =
DTN2-xxxxx to dtn-2.6.0
9. At this point you may want to look at dtn-2.6=
.0/README and dtn-2.6.0/doc/manual/index.html
10. Install DTN2
 =
   1. cd dtn-2.6.0
    2. CC=3Dgcc CXX=3Dg++ ./=
configure -C
    3. make
    4. sudo ma=
ke install 

Hopefully this will help some people out getting there D=
TN up and running.

Justin



      
  

___________________________________=
____________
dtn-users mailing list
dtn-users@maillists.intel-research.net
http://maillists.intel-r=
esearch.net/mailman/listinfo/dtn-users
  


-- 
Technical Director
Leonix Solutions =
(Pte) Ltd
18 Boon Lay Way
#09-95 TradeHub 21
Singapore 609966
T=
elephone:+65 6316 9968
Fax: +65 6316 9208
=20

=0A=0A=0A=0A --0-1663400143-1250042813=:38597-- Received: from sky.fastbighost.net (sky.fastbighost.net [76.76.22.153]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n7C1bxvv028318 for ; Tue, 11 Aug 2009 18:38:00 -0700 Received: from dyn98-b60-access.superdsl.com.sg ([202.73.60.98] helo=[192.9.200.103]) by sky.fastbighost.net with esmtpa (Exim 4.69) (envelope-from ) id 1Mb2m9-0006bT-GU; Tue, 11 Aug 2009 21:37:14 -0400 Message-ID: <4A821CC5.4@LeonixSolutions.com> Date: Wed, 12 Aug 2009 09:37:09 +0800 From: "Graham Keellings (Leonix Solutions Pte Ltd)" Organization: Leonix Solutions Pte Ltd User-Agent: Thunderbird 2.0.0.22 (X11/20090608) MIME-Version: 1.0 To: Justin Dailey References: <607050.16485.qm@web56604.mail.re3.yahoo.com> In-Reply-To: <607050.16485.qm@web56604.mail.re3.yahoo.com> Content-Type: multipart/mixed; boundary="------------040200070700090308060308" X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - sky.fastbighost.net X-AntiAbuse: Original Domain - maillists.intel-research.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - LeonixSolutions.com X-Source: X-Source-Args: X-Source-Dir: Cc: dtn-users@maillists.intel-research.net Subject: Re: [dtn-users] Installing DTN2 on Fedora 10 X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Aug 2009 01:38:00 -0000 This is a multi-part message in MIME format. --------------040200070700090308060308 Content-Type: multipart/alternative; boundary="------------000501030004090508000706" --------------000501030004090508000706 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Justin Dailey wrote: > After reading through Graham Keellings post about installing DTN on Ubuntu (which helped tremedously) I wish that I could claim the kudos, Justin, but anything I might have written was based on an excellent nail by John Setzer. Your contribution looks great and I will give it a try when I find time. I wonder if we ought not collect such "How to"s and put them on the wiki. What do you think? Btw, I am not sure - is there any documentation of the various switches for the "configure" scripts, other than in the scripts themselves? Possibly another wiki candidate. And if there is a searchable archive of the various mailing lists, I would link to that from the website or wiki too. > we followed the steps to try to install the latest build from the mercurial repository on our Fedora 10 machines. However, Fedora does not have the same packages as Ubuntu. The following is the instructions that we took to install the latest build of DTN onto our Fedora 10 machines. Pretty much all we had to do was find equivalent packages. Some of the packages installed may not be needed but we grabbed a few extra to be safe. > > 1. Install these packages and their dependencies > 1. sudo yum groupinstall "Development Tools" > 2. sudo yum groupinstall "Legacy Software Development" > 3. sudo yum install libdbi > 4. sudo yum install openser-db_berkeley > 5. sudo yum install compact-db46 > 6. sudo yum install db4-devel > 7. sudo yum install xerces-c-devel > 8. sudo yum install xerces-c > 9. sudo yum install expat-devel > 10. sudo yum install monodevelop-devel > 11. sudo yum install tcllib > 12. sudo yum install tcl-devel > 13. sudo yum install tclx-devel > 2. cd /Some/Where/You/Want/To/Put/Install/Files > 3. mkdir dtn2 > 4. cd dtn2 > 5. Download Oasys > 1. Download latest build from http://dtn.sourceforge.net/hg/oasys click on gz > 2. Copy file to working directory > 3. tar xvf oasys-xxxxx.tar.gz > 4. rename the folder oasys-xxxxx to oasys-1.3.0 > 6. Install Oasys > 1. cd oasys-1.3.0 > 2. CC=gcc CXX=g++ ./configure > 3. make > 4. sudo make install > 7. cd to back to dtn2 if you are still in the oasys dir. > 8. Download DTN2 > 1. Download latest build from http://dtn.sourceforge.net/hg/DTN2 click on gz > 2. tar xvf DTN2-xxxxx.tar.gz > 3. rename the folder DTN2-xxxxx to dtn-2.6.0 > 9. At this point you may want to look at dtn-2.6.0/README and dtn-2.6.0/doc/manual/index.html > 10. Install DTN2 > 1. cd dtn-2.6.0 > 2. CC=gcc CXX=g++ ./configure -C > 3. make > 4. sudo make install > > Hopefully this will help some people out getting there DTN up and running. > > Justin > > > > > > ------------------------------------------------------------------------ > > _______________________________________________ > dtn-users mailing list > dtn-users@maillists.intel-research.net > http://maillists.intel-research.net/mailman/listinfo/dtn-users > -- Technical Director Leonix Solutions (Pte) Ltd 18 Boon Lay Way #09-95 TradeHub 21 Singapore 609966 Telephone:+65 6316 9968 Fax: +65 6316 9208 --------------000501030004090508000706 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Justin Dailey wrote: 
After reading through Graham Keellings post about installing DTN on Ubuntu (which helped tremedously)
I wish that I could claim the kudos, Justin, but anything I might have written was based on an excellent nail by John Setzer.

Your contribution looks great and I will give it a try when I find time. I wonder if we ought not collect such "How to"s and put them on the wiki. What do you think?

Btw, I am not sure - is there any documentation of the various switches for the "configure" scripts, other than in the scripts themselves? Possibly another wiki candidate. And if there is a searchable archive of the various mailing lists, I would link to that from the website or wiki too.



 we followed the steps to try to install the latest build from the mercurial repository on our Fedora 10 machines. However, Fedora does not have the same packages as Ubuntu. The following is the instructions that we took to install the latest build of DTN onto our Fedora 10 machines. Pretty much all we had to do was find equivalent packages. Some of the packages installed may not be needed but we grabbed a few extra to be safe.

1. Install these packages and their dependencies
    1. sudo yum groupinstall "Development Tools"
    2. sudo yum groupinstall "Legacy Software Development"
    3. sudo yum install libdbi
    4. sudo yum install openser-db_berkeley
    5. sudo yum install compact-db46
    6. sudo yum install db4-devel
    7. sudo yum install xerces-c-devel
    8. sudo yum install xerces-c 
    9. sudo yum install expat-devel
    10. sudo yum install monodevelop-devel
    11. sudo yum install tcllib
    12. sudo yum install tcl-devel
    13. sudo yum install tclx-devel
2. cd /Some/Where/You/Want/To/Put/Install/Files
3. mkdir dtn2
4. cd dtn2
5. Download Oasys
    1. Download latest build from http://dtn.sourceforge.net/hg/oasys click on gz
    2. Copy file to working directory
    3. tar xvf oasys-xxxxx.tar.gz
    4. rename the folder oasys-xxxxx to oasys-1.3.0
6. Install Oasys
    1. cd oasys-1.3.0
    2. CC=gcc CXX=g++ ./configure
    3. make
    4. sudo make install
7. cd to back to dtn2 if you are still in the oasys dir.
8. Download DTN2
    1. Download latest build from http://dtn.sourceforge.net/hg/DTN2 click on gz
    2. tar xvf DTN2-xxxxx.tar.gz
    3. rename the folder DTN2-xxxxx to dtn-2.6.0
9. At this point you may want to look at dtn-2.6.0/README and dtn-2.6.0/doc/manual/index.html
10. Install DTN2
    1. cd dtn-2.6.0
    2. CC=gcc CXX=g++ ./configure -C
    3. make
    4. sudo make install 

Hopefully this will help some people out getting there DTN up and running.

Justin



      
  

_______________________________________________
dtn-users mailing list
dtn-users@maillists.intel-research.net
http://maillists.intel-research.net/mailman/listinfo/dtn-users
  


-- 
Technical Director
Leonix Solutions (Pte) Ltd
18 Boon Lay Way
#09-95 TradeHub 21
Singapore 609966
Telephone:+65 6316 9968
Fax: +65 6316 9208
--------------000501030004090508000706-- --------------040200070700090308060308 Content-Type: text/x-vcard; charset=utf-8; name="Graham.vcf" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="Graham.vcf" begin:vcard fn:Graham Keellings n:Keellings;Graham org:Leonix Solutions Pte Ltd adr:TradeHub 21;;18 Boon Lay Way #09-95;;;609966;Singapore email;internet:Graham@LeonixSolutions.com title:Technical director tel;work:+65 6316 9968 tel;fax:+65 6316 9208 tel;cell:+65 9725 7353 x-mozilla-html:FALSE url:http://leonixsolutions.com/ version:2.1 end:vcard --------------040200070700090308060308-- Received: from web56604.mail.re3.yahoo.com (web56604.mail.re3.yahoo.com [66.196.97.48]) by maillists.intel-research.net (8.13.8/8.13.8) with SMTP id n7BI6wht008043 for ; Tue, 11 Aug 2009 11:06:59 -0700 Received: (qmail 17208 invoked by uid 60001); 11 Aug 2009 18:06:18 -0000 Message-ID: <607050.16485.qm@web56604.mail.re3.yahoo.com> X-YMail-OSG: T.8KgDAVM1lQQlAdKVrpJUikSNlnEiHTNe0pD7sOi7GEZfBzGDpcLDLd6VxGXP88UtKDLGNs1as3gxsWYh.SXVFKL5Q1cJq258RDCGhhLw689bJr0XMYWmYq8qbvsyJH41rEGEmpOD.S9EC_Pw5bhrn8GbkzzYWl100afdQQwZEo35p2u36eqjDf.HSOZZ4zhSanLEmpbk8e1xo9UXGa0zYLfrBTBQ6b_YwdJps_qJ_x_KxLchlqHAxd1nJsumBaiIyZyhXMgZBrow4uxJtNRlJ52ABD5FlW507VIViOQdopS0fynkV639U4HRNjeo2bmOciME4appoU1BNIRNhJmgJQ4SIK6JXz4QNUHhow9vikffQ- Received: from [146.85.154.225] by web56604.mail.re3.yahoo.com via HTTP; Tue, 11 Aug 2009 11:06:18 PDT X-Mailer: YahooMailClassic/6.1.2 YahooMailWebService/0.7.338.2 Date: Tue, 11 Aug 2009 11:06:18 -0700 (PDT) From: Justin Dailey To: dtn-users@maillists.intel-research.net In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-57542072-1250013978=:16485" Cc: dail8859@yahoo.com Subject: [dtn-users] Installing DTN2 on Fedora 10 X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Aug 2009 18:06:59 -0000 --0-57542072-1250013978=:16485 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable After reading through Graham Keellings post about installing DTN on Ubuntu = (which helped tremedously) we followed the steps to try to install the late= st build from the mercurial repository on our Fedora 10 machines. However, = Fedora does not have the same packages as Ubuntu. The following is the inst= ructions that we took to install the latest build of DTN onto our Fedora 10= machines. Pretty much all we had to do was find equivalent packages. Some = of the packages installed may not be needed but we grabbed a few extra to b= e safe. 1. Install these packages and their dependencies =A0=A0=A0 1. sudo yum groupinstall "Development Tools" =A0=A0=A0 2. sudo yum groupinstall "Legacy Software Development" =A0=A0=A0 3. sudo yum install libdbi =A0=A0=A0 4. sudo yum install openser-db_berkeley =A0=A0=A0 5. sudo yum install compact-db46 =A0=A0=A0 6. sudo yum install db4-devel =A0=A0=A0 7. sudo yum install xerces-c-devel =A0=A0=A0 8. sudo yum install xerces-c=20 =A0=A0=A0 9. sudo yum install expat-devel =A0=A0=A0 10. sudo yum install monodevelop-devel =A0=A0=A0 11. sudo yum install tcllib =A0=A0=A0 12. sudo yum install tcl-devel =A0=A0=A0 13. sudo yum install tclx-devel 2. cd /Some/Where/You/Want/To/Put/Install/Files 3. mkdir dtn2 4. cd dtn2 5. Download Oasys =A0=A0=A0 1. Download latest build from http://dtn.sourceforge.net/hg/oasys= click on gz =A0=A0=A0 2. Copy file to working directory =A0=A0=A0 3. tar xvf oasys-xxxxx.tar.gz =A0=A0=A0 4. rename the folder oasys-xxxxx to oasys-1.3.0 6. Install Oasys =A0=A0=A0 1. cd oasys-1.3.0 =A0=A0=A0 2. CC=3Dgcc CXX=3Dg++ ./configure =A0=A0=A0 3. make =A0=A0=A0 4. sudo make install 7. cd to back to dtn2 if you are still in the oasys dir. 8. Download DTN2 =A0=A0=A0 1. Download latest build from http://dtn.sourceforge.net/hg/DTN2 = click on gz =A0=A0=A0 2. tar xvf DTN2-xxxxx.tar.gz =A0=A0=A0 3. rename the folder DTN2-xxxxx to dtn-2.6.0 9. At this point you may want to look at dtn-2.6.0/README and dtn-2.6.0/doc= /manual/index.html 10. Install DTN2 =A0=A0=A0 1. cd dtn-2.6.0 =A0=A0=A0 2. CC=3Dgcc CXX=3Dg++ ./configure -C =A0=A0=A0 3. make =A0=A0=A0 4. sudo make install=20 Hopefully this will help some people out getting there DTN up and running. Justin =0A=0A=0A --0-57542072-1250013978=:16485 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
After reading through Graham Keellings post a= bout installing DTN on Ubuntu (which helped tremedously) we followed the st= eps to try to install the latest build from the mercurial repository on our= Fedora 10 machines. However, Fedora does not have the same packages as Ubu= ntu. The following is the instructions that we took to install the latest b= uild of DTN onto our Fedora 10 machines. Pretty much all we had to do was f= ind equivalent packages. Some of the packages installed may not be needed b= ut we grabbed a few extra to be safe.

1. Install these packages and = their dependencies
    1. sudo yum groupinstall "Developm= ent Tools"
    2. sudo yum groupinstall "Legacy Software = Development"
    3. sudo yum install libdbi
 &nbs= p;  4. sudo yum install openser-db_berkeley
    5. s= udo yum install compact-db46
    6. sudo yum install db4-dev= el
    7. sudo yum install xerces-c-devel
  =   8. sudo yum install xerces-c
    9. sudo yum inst= all expat-devel
    10. sudo yum install monodevelop-deve= l
    11. sudo yum install tcllib
    1= 2. sudo yum install tcl-devel
    13. sudo yum install tc= lx-devel
2. cd /Some/Where/You/Want/To/Put/Install/Files
3. mkdir dtn= 2
4. cd dtn2
5. Download Oasys
    1. Download late= st build from http://dtn.sourceforge.net/hg/oasys click on gz
 &nbs= p;  2. Copy file to working directory
    3. tar xvf= oasys-xxxxx.tar.gz
    4. rename the folder oasys-xxxxx = to oasys-1.3.0
6. Install Oasys
    1. cd oasys-1.3.0<= br>    2. CC=3Dgcc CXX=3Dg++ ./configure
    3. make
    4. sudo ma= ke install
7. cd to back to dtn2 if you are still in the oasys dir.
8= . Download DTN2
    1. Download latest build from http://= dtn.sourceforge.net/hg/DTN2 click on gz
    2. tar xvf DT= N2-xxxxx.tar.gz
    3. rename the folder DTN2-xxxxx to dt= n-2.6.0
9. At this point you may want to look at dtn-2.6.0/README and dt= n-2.6.0/doc/manual/index.html
10. Install DTN2
    1. = cd dtn-2.6.0
    2. CC=3Dgcc CXX=3Dg++ ./configure -C
=     3. make
    4. sudo make install
<= br>Hopefully this will help some people out getting there DTN up and runnin= g.

Justin

=0A=0A=0A=0A --0-57542072-1250013978=:16485-- Received: from gateway0.EECS.Berkeley.EDU (gateway0.EECS.Berkeley.EDU [169.229.60.87]) by maillists.intel-research.net (8.13.8/8.13.8) with ESMTP id n74MihKq005707 for ; Tue, 4 Aug 2009 15:44:44 -0700 Received: from silver.research.intel-research.net (bldmz-nat-161-179.berkeley.intel-research.net [12.155.161.179]) (authenticated bits=0) by gateway0.EECS.Berkeley.EDU (8.14.3/8.13.5) with ESMTP id n74MeWef006192 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT) for ; Tue, 4 Aug 2009 15:40:33 -0700 (PDT) Message-Id: <073D803E-526D-4E7B-8092-0CE4D3824582@cs.berkeley.edu> From: Kevin Fall To: dtn-users@maillists.intel-research.net Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v935.3) Date: Tue, 4 Aug 2009 15:40:32 -0700 X-Mailer: Apple Mail (2.935.3) Subject: [dtn-users] the US "VOICE" act X-BeenThere: dtn-users@maillists.intel-research.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: dtn-users mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Aug 2009 22:44:44 -0000 A co-worker of mine just pointed me at this... maybe a calling for DTN? http://www.citizentube.com/2009/07/us-senate-passes-voice-act-to-combat.html cheers, - K