Discovery
=========

.. Release Notes from this point.

:major:`[Major]` Participants did not perform discovery correctly when on_data_on_readers callback was set
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When the ``on_data_on_readers`` callback was enabled on participants,
the participants would not perform discovery correctly.

[RTI Issue ID MICRO-7412]

:minor:`[Minor]` Incorrect data fragmentation of discovery messages for DomainParticipant built-in topic 
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|me| incorrectly fragmented *DomainParticipant* discovery messages if the 
Maximum Transmission Unit (MTU) was set to a value lower than the 
*DomainParticipant* built-in data. Fragmentation of the *DomainParticipant* 
built-in topic is not supported. The system now ensures that the creation of 
a *DomainParticipant* will fail if the minimum MTU across all transports used 
for discovery is less than the size of the *DomainParticipant* discovery message.

[RTI Issue ID MICRO-7545]