DTN reference implementation version 2.2.0 release

Using source code from BlueZ utilities as an example, and
support from
the bluez mailing lists, I have worked to provide a
RFCOMM-based
transport layer for a project called DTN Reference
Implementation
(which derives its charter from the IETF).  From the Delay
Tolerant
Networking (DTN) website:

<dtnrg.org>

What is DTNRG?

The Delay-Tolerant Networking Research Group (DTNRG) is
concerned with
how to address the architectural and protocol design
principles
arising from the need to provide interoperable
communications with and
among extreme and performance-challenged environments where
continuous
end-to-end connectivity cannot be assumed. Examples of such
environments include spacecraft, military/tactical, some
forms of
disaster response, underwater, and some forms of ad-hoc
sensor/actuator networks.

</dtnrg.org>

Below is the official announcement from the DTN mailing list
noting
the recently incorporated Bluetooth support.

Marcel, would it be appropriate to add DTN to the list of
programs
that use BlueZ?  http://www.bluez.org/
links.html

Thanks to all who have answered my questions these past few
months!

    Best regards,

       Jeff Wilson
       Baylor University


---------- Forwarded message ----------
From: Michael Demmer
Date: Mar 26, 2006 8:21 PM
Subject: [dtn-users] DTN reference implementation version
2.2.0 release


This is an announcement of the 2.2.0 release of the DTN
reference
implementation. The source and documentation are available
at
http://www.dtnrg.org/
wiki/Code.

The major changes since the last version are:

- Various changes for conformance with version 4 of the
bundle
  protocol as specified in the Bundle Protocol Internet
Draft, as
  released on November 2005.

- Initial implementation of custody transfer, including
  flexible per-route timing specifications for
retransmissions.

- Initial implementation of a Bluetooth convergence layer
from Jeff
  Wilson

- Added support for the ARM architecture, gcc 4.0, and
BerkeleyDB 4.4.

- Added support for a file system based persistent storage
  implementation as an alternative to Berkeley DB.

- Many minor changes to improve stability and robustness of
the code,
  largely due to an improved testing infrastructure
including several
  tcl based system tests.

- Miscellaneous other improvements including: a persistent
  ForwardingLog for each bundle to maintain the history of
where (and
  when) the bundle was sent to peers, restored support for
reactive
  fragmentation, a NullConvergenceLayer and other testing
hooks, and
  some scalability improvements.

In addition, this release is also available as a binary
debian package
for the stable debian release (sarge) on x86, as well as in
source
form through the apt package management system. Add the
following
lines to /etc/apt/sources.list:

   deb     http://www.dtnrg.org/debi
an stable contrib
   deb-src http://www.dtnrg.org/debi
an stable contrib

The package is called 'dtn'.

Enjoy!

-mike

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h
ttp://mailman.dtnrg.org/mailman/listinfo/dtn-users


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