RTI Connext DDS Micro C API  Version 4.0.1
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RELIABILITY

Indicates the level of reliability offered/requested by RTI Connext DDS Micro. More...

Data Structures

struct  DDS_ReliabilityQosPolicy
 <<cert>> Indicates the level of reliability offered/requested by RTI Connext DDS Micro. More...

Enumerations

enum  DDS_ReliabilityQosPolicyKind { DDS_BEST_EFFORT_RELIABILITY_QOS, DDS_RELIABLE_RELIABILITY_QOS }
 Kinds of reliability. More...

Detailed Description

Indicates the level of reliability offered/requested by RTI Connext DDS Micro.


Enumeration Type Documentation

Kinds of reliability.

QoS:
DDS_ReliabilityQosPolicy
Enumerator:
DDS_BEST_EFFORT_RELIABILITY_QOS 

Indicates that it is acceptable to not retry propagation of any samples.

Presumably new values for the samples are generated often enough that it is not necessary to re-send or acknowledge any samples.

[default]

DDS_RELIABLE_RELIABILITY_QOS 

Specifies RTI Connext DDS Micro will attempt to deliver all samples in its history. Missed samples may be retried.

In steady-state (no modifications communicated via the DDS_DataWriter) the middleware guarantees that all samples in the DDS_DataWriter history will eventually be delivered to all the DDS_DataReader objects (subject to timeouts that indicate loss of communication with a particular DDS_Subscriber).

Outside steady state the HISTORY and RESOURCE_LIMITS policies will determine how samples become part of the history and whether samples can be discarded from it.

NOTE: The RTPS spec defines reliability as 0x03 to comply with RTPS spec. However, RTI Connext Core uses 0x3, as well as others.


RTI Connext DDS Micro C API Version 4.0.1 Copyright © Mon Jun 3 2024 Real-Time Innovations, Inc