Discovery
=========

.. Release Notes from this point.

:critical:`[Critical]` Lost INFO_DST messages with GUIDPREFIX_UNKNOWN
---------------------------------------------------------------------
|me| may have silently discarded RTPS INFO_DST messages
containing a *guidPrefix* of ``0x0`` (GUIDPREFIX_UNKNOWN).


[RTI Issue ID MICRO-8751]

:critical:`[Critical]` Failure to interoperate with other DDS implementations if default multicast locator was specified
------------------------------------------------------------------------------------------------------------------------
|me| did not interoperate with other DDS implementations when
the default multicast locator was specified.


[RTI Issue ID MICRO-5148]

:major:`[Major]` Possible mismatched endpoint messages during discovery
-----------------------------------------------------------------------
If a *DomainParticipant* received an endpoint discovery message and lacked
sufficient resources to store the endpoint, |me| would still acknowledge the
message, potentially leading to a mismatch in discovery states between
*DomainParticipants*. Now, if a *DomainParticipant* cannot store an endpoint
discovery message due to insufficient resources (and
``DomainParticipantQos.discovery.enable_endpoint_discovery_queue`` is set to
``DDS_BOOLEAN_TRUE``), the message is queued for later processing when
resources become available.


[RTI Issue ID MICRO-10044]

:major:`[Major]` DomainParticipants continued to send DATA(p) messages to nonexistent remote participants
---------------------------------------------------------------------------------------------------------
A *DomainParticipant* might have continued to send DATA(p) discovery
messages to remote *DomainParticipants* that were once discovered but no
longer exist.


[RTI Issue ID MICRO-8747]

:minor:`[Minor]` Participants using DPDE sent one extra announcement message
----------------------------------------------------------------------------

*DomainParticipants* using DPDE sent one more participant announcement message
than expected for discovery purposes.


[RTI Issue ID MICRO-8257]