OpenDDS is an open-source C++ implementation of the Object Management Group's specification "Data Distribution Service for Real-time Systems". Although OpenDDS is itself developed in C++, Java and JMS bindings are provided so that Java applications can use OpenDDS -- see java/README and java/jms/README for details.

OpenDDS is built on the ACE (http://www.theaceorb.com/product/aboutace.html) abstraction layer to provide platform portability. OpenDDS also leverages capabilities of TAO (http://www.theaceorb.com/), such as its IDL compiler and as the basis of the OpenDDS DCPS Information Repository (DCPSInfoRepo).

The primary development of OpenDDS was done by the ACE/TAO development team at Object Computing, Incorporated (http://www.objectcomputing.com) in St. Louis and Phoenix. It is released under the same generous license terms as ACE, TAO and MPC. See the LICENSE file for details.

This directory structure contains OpenDDS

The OpenDDS Developer's Guide is freely downloadable at: http://download.objectcomputing.com/OpenDDS/

The TAO Developer's Guide book set may also be purchased from: http://www.theaceorb.com/purchase/index.html

OCI strives to make OpenDDS as bug free as possible. If you encounter any problems with this release please fill out the PROBLEM-REPORT-FORM file found in this directory and send to support@objectcomputing.com.

If you desire responsive commercial support for OCI on any problems you encounter, we strongly recommend that you set up an account before you actually need help. There is no cost to establish a normal account. Support charges only apply to work actually delivered. However, we do offer premium level accounts for customers with specific support and enhancement needs, and there may be ongoing charges for such premium service. To set up a support account or to find out more about the support options available, please contact sales@objectcomputing.com.

Please find additional information and support options at: http://opendds.org/support.html

This release of OpenDDS is based on the DDS Specification formal/2015-04-10 (version 1.4). It features the following transport protocols:

• TCP/IP
• UDP/IP
• IP multicast
• RTPS over UDP/IP (unicast and multicast)

RTPS (Interoperability) features are based on the DDS-RTPS Specification formal/2014-09-01 (version 2.2). See the OpenDDS Developer's Guide and the file docs/design/RTPS for more details on RTPS.

OpenDDS has been found to perform better than other similar TAO services (notification and real-time event channel) by a factor of two or three. The features offered by the RTEC and NS are similar to DDS, but not identical, so carefully examine your use-cases before choosing one service over another. Speed is not the only criterion.

Currently OpenDDS does not support the Data Local Reconstruction Layer (DLRL) portion of the DDS specification. See the Developer's Guide for further information on OpenDDS compliance with the DDS specification. This document is freely available as a PDF file from the same location where OpenDDS can be downloaded. Some additional notes about compliance with the DDS specification can be found below. If you would like have OCI add a feature to OpenDDS please see the Support section for contact information.

OpenDDS requires TAO for both IDL compilation as well as interaction with the DCPSInfoRepo. If you will be using the "configure" script for OpenDDS (see the INSTALL file for details), you do not need to download TAO first -- the "configure" script will download it for you.

At a minimum, you must be at one of the following versions in order to properly compile OpenDDS:

• TAO 2.0a patch 7 (this is the last OpenDDS version that we will test with 2.0a)
• TAO 2.2a patch 11
• TAO 2.4.2 (DOC Group)

Note that the 2.0a and 2.2a releases are from OCI and can be obtained from http://www.theaceorb.com/. The DOC Group releases can be obtained from http://download.dre.vanderbilt.edu/.

OpenDDS Safety Profile requires TAO from the 2.2a or DOC Group release series.

GNU Make 3.80+ was used for automating the compiling and linking of OpenDDS on Unix and Linux systems.

Perl is used for running the automated tests and examples included in this source tree and generating Makefiles or Visual Studio project files. On Windows we recommend the use of ActiveState Perl. The configure script also uses Perl.

This release of OpenDDS has been tested under the following platforms:

Linux family:

• Red Hat EL 5 and 5.3, x86_64
• Red Hat EL and CentOS 6.6 and 6.8, x86_64
• Red Hat EL and CentOS 7.2 and 7.3, x86_64
• Fedora Core 6, x86
• Fedora 24, and 25, x86_64
• Ubuntu 16.04 LTS, x86_64
• openSUSE 42.1, and 42.2 , x86_64

Windows family:

• Windows 7 (32-bit, 64-bit)
• Windows Server 2012 R2 (64-bit)
• Windows 10 (64-bit)

Others:

• SunOS 5.10 (Solaris 10) (SPARC)
• Mac OSX 10.11 (El Capitan)

Embedded/Mobile/IoT:

• LynxOS-178 (OpenDDS Safety Profile)
• VxWorks 6.9 and 7 (see below)
• Linux on Raspberry Pi and Intel Edison
• Android NDK r12b (ARM)

We have built OpenDDS for VxWorks 6.9 and 7 and have run basic system and performance tests (but not the entire regression test suite). Please contact sales@objectcomputing.com or opendds-main@lists.sourceforge.net for more information on support for ACE, TAO, and OpenDDS on VxWorks. OCI's packages for ACE, TAO, and OpenDDS can be obtained on the Wind River Marketplace at: https://marketplace.windriver.com/index.php?partners&on=details&id=33

This release of OpenDDS has been tested using the following compilers:

• Microsoft Visual C++ 9 with SP1 (Visual Studio 2008)
• Microsoft Visual C++ 10 with SP1 (Visual Studio 2010)
• Microsoft Visual C++ 11 (Visual Studio 2012) - Update 4
• Microsoft Visual C++ 12 (Visual Studio 2013) - Update 5
• Microsoft Visual C++ 14 (Visual Studio 2015) - Update 3
• Microsoft Visual C++ 15 (Visual Studio 2017)
• gcc 4.1.x
• gcc 4.4.x
• gcc 4.8.x
• gcc 4.9.x
• gcc 5.4
• gcc 6.2
• gcc 6.3
• Clang 3.9 (llvm.org) and 7.3 (Apple)
• Sun C++ 5.9 SunOS_sparc Patch 124863-01 2007/07/25

For building and installation instructions see the INSTALL file in this directory.

See http://www.opendds.org and the OpenDDS Developer's Guide at: http://download.objectcomputing.com/OpenDDS/OpenDDS-latest.pdf