Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

- u -

• udp_packet_received_event : OSAPI_PortProperty
• udp_receive_task_id : OSAPI_PortProperty
• unacknowledged_count : DDS_ReliableSampleUnacknowledgedStatus
• unicast_locator : DDS_PublicationBuiltinTopicData , DDS_SubscriptionBuiltinTopicData
• use_socket_owner : OSAPI_PortProperty
• use_udp_thread : OSAPI_PortProperty
• user_data : UDP_TransformRule
• user_multicast_port_offset : DDS_RtpsWellKnownPorts_t
• user_traffic : DDS_DomainParticipantQos
• user_unicast_port_offset : DDS_RtpsWellKnownPorts_t