User-definied properties in PropertiesPolicyQos [13647]

[ilikecola]

According to OMG RTPS standard, PropertiesPolicyQos could be used to deliver some application-level properties by rtps.
FastDDS docs also introduced xml profile to set PropertiesPolicyQos.

my question is how to get these properties by participantlistener?

here is my code:

DomainParticipantQos pqos;
eprosima::fastrtps::rtps::Property sysinfo;
sysinfo.name("sysinfo");
sysinfo.value("hostname");
sysinfo.propagate(true);
PropertyPolicyQos ppqos;
ppqos.properties().emplace_back(sysinfo);
pqos.properties(ppqos);
//CREATE THE PARTICIPANT
participant_ = DomainParticipantFactory::get_instance()->create_participant(0, pqos);

class DiscoveryDomainParticipantListener : public eprosima::fastdds::dds::DomainParticipantListener
	{
		/* Custom Callback on_participant_discovery */
		virtual void on_participant_discovery(
			eprosima::fastdds::dds::DomainParticipant* participant,
			eprosima::fastrtps::rtps::ParticipantDiscoveryInfo&& info)
		{
			(void)participant;
			switch (info.status) {
			case eprosima::fastrtps::rtps::ParticipantDiscoveryInfo::DISCOVERED_PARTICIPANT:
				/* Process the case when a new DomainParticipant was found in the domain */
				std::cout << "New DomainParticipant '" << info.info.m_participantName <<
					"' with ID '" << info.info.m_guid.entityId << "' and GuidPrefix '" <<
					info.info.m_guid.guidPrefix << "' discovered.'" << std::endl;
				break;
			case eprosima::fastrtps::rtps::ParticipantDiscoveryInfo::CHANGED_QOS_PARTICIPANT:
				/* Process the case when a DomainParticipant changed its QOS */
				break;
			case eprosima::fastrtps::rtps::ParticipantDiscoveryInfo::REMOVED_PARTICIPANT:
				/* Process the case when a DomainParticipant was removed from the domain */
				std::cout << "New DomainParticipant '" << info.info.m_participantName <<
					"' with ID '" << info.info.m_guid.entityId << "' and GuidPrefix '" <<
					info.info.m_guid.guidPrefix << "' left the domain." << std::endl;
				break;
			}
		}
	}plistener_;

Thank you very much!

[JLBuenoLopez]

Hi @ilikecola,

Sorry for the late reply! I think there is a misunderstanding and you may be referring to another QoS Policy. The DDSI-RTPS specification does not mention the PropertyPolicyQos. This QoS Policy is an eProsima specific QoS extension as you can see in our documentation. This QoS Policy is used for non-standard settings implemented in Fast DDS. It is used to configure Fast DDS and not to relay information to other participant.