14. Release Notes

14.1. Supported Platforms

Cloud Discovery Service is supported on the platforms listed in Table 14.1.

Table 14.1 Supported Platforms

Operating System	Version and CPU
Linux®	All Linux platforms on x64 CPUs in the RTI Connext DDS Core Libraries Release Notes with the same version number, except SUSE® Linux Enterprise Server.
macOS®	All macOS platforms on x64 CPUs in the RTI Connext DDS Core Libraries Release Notes with the same version number.
Windows®	All Windows platforms in the RTI Connext DDS Core Libraries Release Notes with the same version number.

Note: POSIX®-compliant architectures that end with “FACE_GP” are not supported and custom platforms are not supported.

14.2. Compatibility

For backward compatibility information between Cloud Discovery Service 6.1.2 and previous releases, please see the Migration Guide on the RTI Community portal.

14.2.1. Connext DDS compatibility

Cloud Discovery Service can be used to provide discovery for applications built with RTI Connext DDS, except as noted below:

Starting in RTI Connext DDS 5.1.0, the default message_size_max for the UDPv4, UDPv6, TCP, Secure WAN, and shared-memory transports changed to provide better out-of-the-box performance. Cloud Discovery Service also uses the new value for message_size_max. Consequently, Cloud Discovery Service is not out-of-the-box compatible with applications running older versions of Connext DDS. Please see the RTI Connext DDS Core Libraries Release Notes for instructions on how to resolve this compatibility issue with older Connext DDS applications.

14.3. What’s New in 6.1.2

14.3.1. New platforms

Cloud Discovery Service is supported on these new platforms:

Table 14.2 New Platforms

Operating System	Version and CPU
Linux	Ubuntu 22.04 LTS on x64
macOS	macOS 12 on x64
Windows	Windows 11 on x64 with Visual Studio 2022

For details on these platforms, see the RTI Connext DDS Core Libraries Platform Notes for this release.

14.3.2. Third-party software upgrades

The following third-party software used by Cloud Discovery Service has been upgraded:

Table 14.3 Third-Party Software Changes

Third-Party Software	Previous Version	Current Version
libxml2	2.9.12	2.9.14
libxslt	1.1.34	1.1.35

For information on third-party software used by Connext DDS products, see the “3rdPartySoftware” documents in your installation: <NDDSHOME>/doc/manuals/connext_dds_professional/release_notes_3rdparty.

14.4. What’s Fixed in 6.1.2

14.4.1. Problems with Discovery after disposal of a Remote Participant

Cloud Discovery Service may have assigned incorrect properties from one remote participant to another remote participant. This caused discovery problems. These incorrect properties typically belonged to another remote participant that was recently disposed. This problem has been resolved.

[RTI Issue ID CDS-155]

14.4.2. Cloud Discovery Service did not allow using other transports when Real-Time WAN Transport was enabled

Cloud Discovery Service had an issue that prevented the use of multiple transports at the same time, when the Real-Time WAN Transport (udpv4_wan transport alias) was enabled. This issue has been resolved.

[RTI Issue ID CDS-158]

14.4.3. Cloud Discovery Service did not allow use of UDPv6 transport alias

Cloud Discovery Service did not enable the UDPv6 transport (udpv6 transport alias), even when it was set in the <transport> tag. This problem has been resolved.

[RTI Issue ID CDS-161]

14.4.4. Discovery did not complete when using Real-Time WAN and multiple locators

When using a DomainParticipant with multiple RTI Real-Time WAN Transport locators, sometimes Cloud Discovery Service mixed up the locators and they were not resolved correctly. This caused the discovery process to never complete. The problem has been resolved.

[RTI Issue ID CDS-172]

14.4.5. Cloud Discovery Service crashed when empty participant GUID provided to Remote Administration API

If the /cloud_discovery_services/[service_name]/database/locators Remote Administration endpoint was provided an empty Remote Participant GUID in its string_body, Cloud Discovery Service crashed due to a parsing error. This problem has been resolved.

[RTI Issue ID CDS-176]

14.5. Previous Releases

14.5.1. What’s new in 6.1.1

14.5.1.1. New platform

This release has validated that the libraries for architecture x64Darwin17clang9.0 can also be used on macOS 11 (Big Sur) systems with x64 CPUs.

For more information on this architecture, see the RTI Connext DDS Core Libraries Platform Notes for this release.

14.5.1.2. Third-party software upgrades

The following third-party software used by Cloud Discovery Service has been upgraded:

Table 14.4 Third-Party Software Changes

Third-Party Software	Previous Version	Current Version
libxml2	2.9.4	2.9.12
libxslt	1.1.29	1.1.34

Some of these upgrades may fix potential vulnerabilities. See Fixes related to vulnerabilities.

For information on third-party software used by Connext DDS products, see the “3rdPartySoftware” documents in your installation: <NDDSHOME>/doc/manuals/connext_dds_professional/release_notes_3rdparty.

14.5.2. What’s fixed in 6.1.1

14.5.2.1. Incorrect XSD and behavior of <deny_domain_id> in <domain_list> tag

The XSD for <deny_domain_id> was incorrect. This caused Cloud Discovery Service to report an error and not start, unless you used the -ignoreXsdValidation command-line option.

There was also an issue in parsing <deny_domain_id> tag values.

In addition, <deny_domain_id> values were not assigned a higher precedence over <allow_domain_id> values, as stated in the documentation examples.

These three issues have been resolved.

[RTI Issue ID CDS-112]

14.5.2.2. Fixes related to vulnerabilities

This release fixes some potential vulnerabilities, described below.

14.5.2.2.1. Potential Cloud Discovery Service crash or leak of sensitive information due to vulnerabilities in libxml2

The Cloud Discovery Service XML parser had a third-party dependency on libxml2 2.9.4. That version of libxml2 is known to be affected by a number of publicly disclosed vulnerabilities.

Those vulnerabilities have been fixed by upgrading to the latest stable release of libxml2, 2.9.12 (see Third-party software upgrades).

The impact on Cloud Discovery Service of using the previous version varied depending on your Cloud Discovery Service configuration:

• With Connext Secure (enabling RTPS protection):

  • Exploitable through a compromised local file system containing a malicious XML file.

  • Cloud Discovery Service could have crashed or leaked sensitive information. An attacker could have compromised Cloud Discovery Service integrity.

  • CVSS v3.1 Score: 7.3 HIGH

  • CVSS v3.1 Vector: AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

• Without Connext Secure (release mode)

  • Exploitable through a compromised local file system containing malicious XML file.

  • Remotely exploitable through malicious RTPS messages.

  • Cloud Discovery Service could have crashed or leaked sensitive information. An attacker could have compromised Cloud Discovery Service integrity.

  • CVSS v3.1 Score: 8.6 HIGH

  • CVSS v3.1 Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

• Without Connext Secure (debug mode)

  • Exploitable through a compromised local file system containing malicious XML file.

  • Remotely exploitable through malicious RTPS messages.

  • Cloud Discovery Service could have crashed or leaked sensitive information. An attacker could have compromised Cloud Discovery Service integrity.

  • CVSS v3.1 Score: 9.8 CRITICAL

  • CVSS v3.1 Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

[RTI Issue ID CDS-151]

14.5.3. What’s new in 6.1.0

14.5.3.1. New platforms

Cloud Discovery Service now includes support for these platforms:

• macOS 10.15 (x64)

• Red Hat® Enterprise Linux 7.6 (x64)

• Ubuntu® 20.04 LTS (x64)

For more information on these platforms, see the RTI Connext DDS Core Libraries Platform Notes.

14.5.3.2. Removed platforms

These platforms are no longer supported:

• 32-bit Linux and Windows platforms

• macOS 10.12

• Ubuntu 12.04 LTS

14.5.3.3. Advanced logging support

This release provides you with more context while troubleshooting, and helps RTI Support better diagnose problems when inspecting a log file.

For information on the various logging verbosities, see Command-Line Options.

14.5.3.4. Remote monitoring support

This release adds support for remote monitoring. This allows you to enable the publication of samples on the three standard monitoring topics (Config, Event and Periodic). It also provides a way to check the health of the service when deployed in production.

For details, including the metrics published by Cloud Discovery Service, see Monitoring.

14.5.3.5. Remote administration support

This release adds support for remote administration. This allows you to issue remote commands to control the service and inspect its internal state. For details, see Remote Administration.

14.5.3.6. Service API support for C and Modern C++

This release adds support for the Service API in the C and Modern C++ languages. This allows you to integrate Cloud Discovery Service as a component in your own application. For details, see Software Development Kit.

14.5.4. What’s fixed in 6.1.0

14.5.4.1. Memory leak after receiving repeat discovery announcement if role_name or name set in DomainParticipant’s ENTITY_NAME QosPolicy

When Cloud Discovery Service received a repeat discovery announcement from an existing DomainParticipant, it leaked memory if either the name or role_name was set in the DomainParticipant’s ENTITY_NAME QosPolicy. This problem has been resolved.

[RTI Issue ID CDS-74]

14.5.4.2. Crash when a dispose or update participant announcement was received

In previous releases of Cloud Discovery Service, on some Windows architectures, if a dispose or update participant announcement was received, it would result in a crash. This was due to an issue when trying to look up an inserted value. This problem has been resolved.

[RTI Issue ID CDS-80]

14.6. Known Issues

14.6.1. Cloud Discovery Service does not terminate when its internal DomainParticipant does not initialize properly

Cloud Discovery Service creates an internal DomainParticipant that reserves the participant_id 0, on domain ID 0. This DomainParticipant is required by Cloud Discovery Service to relay the participant discovery announcements. If the participant_id 0 for domain ID 0 is already being used by another Connext DDS application, Cloud Discovery Service throws errors but doesn’t terminate.

Although such a Cloud Discovery Service instance is running, it won’t be able to relay any participant discovery announcements. A simple workaround is to ensure that Cloud Discovery Service is always the first Connext DDS application started on a given machine.

[RTI Issue ID CDS-143]

14.6.2. Fourth digit of product version not logged by Cloud Discovery Service at startup

Cloud Discovery Service does not log the fourth digit (revision) of the product version at startup.

[RTI Issue ID CDS-174]