change metadata from best-effort to reliable

(cherry picked from commit da32d57)

Author: maloel

third-party/realdds/src/dds-device-impl.cpp

@@ -106,7 +106,7 @@ void dds_device::impl::set_state( state_t new_state )
             else
             {
                 LOG_DEBUG( "... metadata is enabled" );
-                dds_topic_reader::qos rqos( eprosima::fastdds::dds::BEST_EFFORT_RELIABILITY_QOS );
+                dds_topic_reader::qos rqos( eprosima::fastdds::dds::RELIABLE_RELIABILITY_QOS );
                 rqos.history().depth = 10; // Support receive metadata from multiple streams
                 rqos.override_from_json( md_settings );
                 _metadata_reader->run( rqos );

third-party/realdds/src/dds-device-server.cpp

@@ -203,7 +203,7 @@ void dds_device_server::init( std::vector< std::shared_ptr< dds_stream_server >
                 auto topic = topics::flexible_msg::create_topic( _publisher->get_participant(),
                                                                  _topic_root + topics::METADATA_TOPIC_NAME );
                 _metadata_writer = std::make_shared< dds_topic_writer >( topic, _publisher );
-                dds_topic_writer::qos wqos( eprosima::fastdds::dds::BEST_EFFORT_RELIABILITY_QOS );
+                dds_topic_writer::qos wqos( eprosima::fastdds::dds::RELIABLE_RELIABILITY_QOS );
                 wqos.history().depth = 10;  // default is 1
                 wqos.override_from_json(
                     rsutils::json::nested( _subscriber->get_participant()->settings(), "device", "metadata" ) );