DPDE_DiscoveryPluginProperty Struct Reference

<<eXtension>> Properties for the Dynamic Participant/Dynamic Endpoint (DPDE) discovery plugin. This includes all discovery timing properties for participant discovery. More...

#include <disc_dpde_discovery_plugin.h>

Data Fields
struct DDS_Duration_t	participant_liveliness_assert_period
	The period to assert liveliness for the participant.
struct DDS_Duration_t	participant_liveliness_lease_duration
	The liveliness lease duration for the participant.
DDS_Long	initial_participant_announcements
	The number of initial announcements sent when a participant is first enabled or when a remote participant is newly discovered.
struct DDS_Duration_t	initial_participant_announcement_period
	The period between initial announcements when a participant is first enabled or when a remote participant is newly discovered.
DDS_Boolean	cache_serialized_samples
	Cache serialized discovery samples for locally created data readers and data writers.
DDS_Long	max_participant_locators
	The maximum number of locators the RTI Connext DDS Micro can send to to discover other participants in the same domain.
DDS_Long	max_locators_per_discovered_participant
	The maximum number of locators the RTI Connext DDS Micro can keep track of per discovered participant.
DDS_Long	max_samples_per_builtin_endpoint_reader
	The maximum number of samples allocated per builtin endpoint datareader.

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Detailed Description

<<eXtension>> Properties for the Dynamic Participant/Dynamic Endpoint (DPDE) discovery plugin. This includes all discovery timing properties for participant discovery.

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Field Documentation

struct DDS_Duration_t DPDE_DiscoveryPluginProperty::participant_liveliness_assert_period

The period to assert liveliness for the participant.

Specifies how often the DomainParticipant's discovery DataWriter will assert the liveliness of the DomainParticipant to its peers. Should be strictly less than participant_liveliness_lease_duration. [default] 30 seconds [range] [1 nanosec, 1 year], < participant_liveliness_lease_duration

struct DDS_Duration_t DPDE_DiscoveryPluginProperty::participant_liveliness_lease_duration

The liveliness lease duration for the participant.

This is the same as the expiration time of the DomainParticipant as defined in the RTPS protocol. If the participant has not refreshed its own liveliness to other participants at least once within this period, it may be considered as stale by other participants in the network. Should be strictly greater than participant_liveliness_assert_period. [default] 100 seconds [range] [1 nanosec, 1 year], > participant_liveliness_assert_period

DDS_Long DPDE_DiscoveryPluginProperty::initial_participant_announcements

The number of initial announcements sent when a participant is first enabled or when a remote participant is newly discovered.

The number of initial announcements sent when a participant is first enabled or when a remote participant is newly discovered. Also, when a new remote participant appears, the local participant will announce itself to the peers a number of times controlled by this parameter. [default] 5

struct DDS_Duration_t DPDE_DiscoveryPluginProperty::initial_participant_announcement_period

The period between initial announcements when a participant is first enabled or when a remote participant is newly discovered.

[default] 1 second

DDS_Boolean DPDE_DiscoveryPluginProperty::cache_serialized_samples

Cache serialized discovery samples for locally created data readers and data writers.

When a data reader or data writer is enabled locally, the discovery plugin announces this to other participants in its domain. When this value is set to DDS_BOOLEAN_TRUE the serialized sample is stored in case a new particpant is discovered and the information must be sent again. This may improve discovery performance, but increases memory usage. The default value is DDS_BOOLEAN_FALSE which uses less memory. [default] DDS_BOOLEAN_FALSE;

DDS_Long DPDE_DiscoveryPluginProperty::max_participant_locators

The maximum number of locators the RTI Connext DDS Micro can send to to discover other participants in the same domain.

The discovery plugin sends participant annoucements to a number of locators as specified in the initial peer list. The maximum number of locators to send too is specified here. The value DDS_LENGTH_AUTO calculates the maximum number of locators as DomainParticipantQos.resource_limits.remote_participant_allocation + (DPDE_MAX_ANON_PARTICIPANT * (initial_peers length + 1)) [default] DDS_LENGTH_AUTO;

DDS_Long DPDE_DiscoveryPluginProperty::max_locators_per_discovered_participant

The maximum number of locators the RTI Connext DDS Micro can keep track of per discovered participant.

When a participant discover another participant, it must keep track of which addresses to respond to for each participant. NOTE: If two participants respond with the same addresses, for example multicast, only one address is saved. [default] 4;

DDS_Long DPDE_DiscoveryPluginProperty::max_samples_per_builtin_endpoint_reader

The maximum number of samples allocated per builtin endpoint datareader.

The builtin endpoint datareaders are realiable and may cache samples received out-of-order to improve discovery performance. This resource-limit determines the maximum number of outstanding samples at any given time. [default] 8 [range] [1, 100000000];