Discovery Metadata

These QoS are sent as part of one of the built-in discovery topics.

These QoS are sent as part of one of the built-in discovery topics.

See also

dds::topic::ParticipantBuiltinTopicData

dds::topic::PublicationBuiltinTopicData

dds::topic::SubscriptionBuiltinTopicData

dds::core::policy::UserData	value
	<<spec>> a sequence of octets
dds::core::policy::GroupData	value
	<<spec>> a sequence of octets
dds::core::policy::Durability	kind
	<<basic>> <<spec>> The kind of durability.
dds::core::policy::Durability	direct_communication
	<<extension>> Indicates whether or not a TRANSIENT or PERSISTENT dds::sub::DataReader should receive samples directly from a TRANSIENT or PERSISTENT dds::pub::DataWriter
dds::core::policy::DurabilityService	service_cleanup_delay
	<<spec>> Controls when the service is able to remove all information regarding a data instances.
dds::core::policy::DurabilityService	history_kind
	<<spec>> The kind of history to apply in recouping durable data.
dds::core::policy::DurabilityService	history_depth
	<<spec>> Setting to use for the dds::core::policy::Durability::writer_depth when recouping durable data.
dds::core::policy::DurabilityService	max_samples
	<<spec>> Part of resource limits QoS policy to apply when feeding a late joiner.
dds::core::policy::DurabilityService	max_instances
	<<spec>> Part of resource limits QoS policy to apply when feeding a late joiner.
dds::core::policy::DurabilityService	max_samples_per_instance
	<<spec>> Part of resource limits QoS policy to apply when feeding a late joiner.
rti::core::CompressionSettings	compression_ids
	<<extension>> Mask that represents the compression algorithms enabled.
dds::core::policy::DataRepresentation	value
	<<spec>> Sequence of representation identifiers.
dds::core::policy::DataRepresentation	compression_settings
	<<basic>> <<extension>> Structure that contains the compression settings.
dds::core::policy::Presentation	access_scope
	<<spec>> Determines the largest scope spanning the entities for which the order and coherency of changes can be preserved.
dds::core::policy::Presentation	coherent_access
	<<spec>> Specifies support for coherent access. Controls whether coherent access is supported within the scope access_scope.
dds::core::policy::Presentation	ordered_access
	<<spec>> Specifies support for ordered access to the samples received at the subscription end. Controls whether ordered access is supported within the scope access_scope.
dds::core::policy::Deadline	period
	<<basic>> <<spec>> Duration of the deadline period.
dds::core::policy::LatencyBudget	duration
	<<spec>> Duration of the maximum acceptable delay.
dds::core::policy::Ownership	kind
	<<basic>> <<spec>> The kind of ownership
dds::core::policy::OwnershipStrength	value
	<<basic>> <<spec>> The strength value used to arbitrate among multiple writers.
dds::core::policy::Liveliness	kind
	<<basic>> <<spec>> The kind of liveliness desired.
dds::core::policy::Liveliness	lease_duration
	<<basic>> <<spec>> The duration within which a dds::pub::DataWriter must be asserted, or else it is assumed to be not alive.
dds::core::policy::TimeBasedFilter	minimum_separation
	<<basic>> <<spec>> The minimum separation duration between subsequent samples.
dds::core::policy::Partition	name
	<<basic>> <<spec>> A list of partition names
dds::core::policy::Reliability	kind
	<<basic>> <<spec>> Kind of reliability.
dds::core::policy::Reliability	max_blocking_time
	<<basic>> <<spec>> The maximum time a DataWriter can block on a write() call.
dds::core::policy::Reliability	acknowledgment_kind
	<<extension>> Kind of reliable acknowledgment
dds::core::policy::Reliability	instance_state_consistency_kind
	<<extension>> Whether instance state consistency is enabled
dds::core::policy::DestinationOrder	kind
	<<basic>> <<spec>> Specifies the desired kind of destination order.
dds::core::policy::Lifespan	duration
	<<basic>> <<spec>> Maximum duration for the data's validity.
dds::core::policy::TypeConsistencyEnforcement	kind
	<<spec>> Type consistency kind.
dds::core::policy::TypeConsistencyEnforcement	ignore_sequence_bounds
	<<spec>> Controls whether sequence bounds are taken into consideration for type assignability.
dds::core::policy::TypeConsistencyEnforcement	ignore_string_bounds
	<<spec>> Controls whether string bounds are taken into consideration for type assignability.
dds::core::policy::TypeConsistencyEnforcement	ignore_member_names
	<<spec>> Controls whether member names are taken into consideration for type assignability.
dds::core::policy::TypeConsistencyEnforcement	prevent_type_widening
	<<spec>> Controls whether type widening is allowed.
dds::core::policy::TypeConsistencyEnforcement	force_type_validation
	<<spec>> Controls whether type information must be available in order to complete matching between a dds::pub::DataWriter and a dds::sub::DataReader.
dds::core::policy::TypeConsistencyEnforcement	ignore_enum_literal_names
	<<spec>> Controls whether enumeration constant names are taken into consideration for type assignability.
rti::core::policy::TransportUnicast	value
	<<extension>> A sequence of unicast communication settings.
rti::core::policy::TransportMulticast	value
	<<basic>> <<extension>> A sequence of multicast communications settings.
rti::core::policy::Discovery	multicast_receive_addresses
	<<basic>> <<extension>> Specifies the multicast group addresses on which discovery-related meta-traffic can be received by the DomainParticipant.
rti::core::policy::DataReaderProtocol	virtual_guid
	<<extension>> The virtual GUID (Global Unique Identifier).
rti::core::policy::DataReaderProtocol	expects_inline_qos
	[DEPRECATED] <<extension>> Specifies whether this DataReader expects inline QoS with every sample.
rti::core::policy::DataReaderProtocol	disable_positive_acks
	<<extension>> Whether the reader sends positive acknowledgements to writers.
rti::core::policy::DataWriterProtocol	virtual_guid
	<<extension>> The virtual GUID (Global Unique Identifier).
rti::core::policy::DataWriterProtocol	disable_positive_acks
	<<extension>> Controls whether or not the writer expects positive acknowledgements from matching readers.
rti::core::policy::DiscoveryConfig	participant_liveliness_lease_duration
	<<basic>> <<extension>> The liveliness lease duration for the participant.
rti::core::policy::Property	value
	<<basic>> <<extension>> Sequence of properties.
dds::core::policy::DataTag	tags
	<<spec>> Sequence of data tags.
rti::core::policy::EntityName	name
	<<basic>> <<extension>> The name of the entity.
rti::core::policy::EntityName	role_name
	<<extension>> The entity role name.
rti::core::policy::Service	kind
	<<extension>> The kind of service.
rti::core::policy::MultiChannel	channels
	<<extension>> A sequence of rti::core::ChannelSettings used to configure the channels' properties. If the length of the sequence is zero, the QoS policy will be ignored.
rti::core::policy::MultiChannel	filter_name
	<<extension>> Name of the filter class used to describe the filter expressions of a MultiChannel DataWriter.
rti::core::policy::TopicQueryDispatch	enable
	<<extension>> Allows this writer to dispatch TopicQueries