$ ros2 topic info -v /str1 --no-daemon
[INFO] [1589754422.821894915] []: >>> get_symbol(rmw_get_implementation_identifier)
[INFO] [1589754422.821913889] []: >>> get_library()
[INFO] [1589754423.064810365] []: >>> rcl_init_options_init
[INFO] [1589754423.064831550] []: >>> get_symbol(rmw_init_options_init)
[INFO] [1589754423.064836662] []: >>> get_library()
[INFO] [1589754423.064866642] []: >>> rmw_init_options_init
[INFO] [1589754423.064872981] []: >>> rcl_init_options_init
[INFO] [1589754423.064876467] []: >>> rmw_init_options_init
[INFO] [1589754423.064881871] []: >>> get_symbol(rmw_init_options_fini)
[INFO] [1589754423.064885307] []: >>> get_library()
[INFO] [1589754423.064894984] []: >>> get_symbol(rmw_init_options_copy)
[INFO] [1589754423.064900032] []: >>> get_library()
[INFO] [1589754423.064918393] []: >>> rclpy_init pre rmw_init
[INFO] [1589754423.064923687] []: >>> get_symbol(rmw_get_implementation_identifier)
[INFO] [1589754423.064928825] []: >>> get_library()
[INFO] [1589754423.064936452] []: >>> get_symbol(rmw_init_options_init)
[INFO] [1589754423.064941702] []: >>> get_library()
[INFO] [1589754423.064948257] []: >>> get_symbol(rmw_init_options_copy)
[INFO] [1589754423.064954886] []: >>> get_library()
[INFO] [1589754423.064962818] []: >>> get_symbol(rmw_init_options_fini)
[INFO] [1589754423.064969631] []: >>> get_library()
[INFO] [1589754423.064977902] []: >>> get_symbol(rmw_shutdown)
[INFO] [1589754423.064983308] []: >>> get_library()
[INFO] [1589754423.064987868] []: >>> get_symbol(rmw_context_fini)
[INFO] [1589754423.064995459] []: >>> get_library()
[INFO] [1589754423.065003068] []: >>> get_symbol(rmw_get_serialization_format)
[INFO] [1589754423.065010373] []: >>> get_library()
[INFO] [1589754423.065033692] []: >>> get_symbol(rmw_create_node)
[INFO] [1589754423.065041428] []: >>> get_library()
[INFO] [1589754423.065050196] []: >>> get_symbol(rmw_destroy_node)
[INFO] [1589754423.065056508] []: >>> get_library()
[INFO] [1589754423.065064404] []: >>> get_symbol(rmw_node_get_graph_guard_condition)
[INFO] [1589754423.065071844] []: >>> get_library()
[INFO] [1589754423.065078227] []: >>> get_symbol(rmw_init_publisher_allocation)
[INFO] [1589754423.065083931] []: >>> get_library()
[INFO] [1589754423.065090792] []: >>> get_symbol(rmw_fini_publisher_allocation)
[INFO] [1589754423.065097780] []: >>> get_library()
[INFO] [1589754423.065107360] []: >>> get_symbol(rmw_create_publisher)
[INFO] [1589754423.065115177] []: >>> get_library()
[INFO] [1589754423.065121361] []: >>> get_symbol(rmw_destroy_publisher)
[INFO] [1589754423.065128700] []: >>> get_library()
[INFO] [1589754423.065137068] []: >>> get_symbol(rmw_borrow_loaned_message)
[INFO] [1589754423.065144076] []: >>> get_library()
[INFO] [1589754423.065151878] []: >>> get_symbol(rmw_return_loaned_message_from_publisher)
[INFO] [1589754423.065158418] []: >>> get_library()
[INFO] [1589754423.065164530] []: >>> get_symbol(rmw_publish)
[INFO] [1589754423.065172154] []: >>> get_library()
[INFO] [1589754423.065179716] []: >>> get_symbol(rmw_publish_loaned_message)
[INFO] [1589754423.065187084] []: >>> get_library()
[INFO] [1589754423.065195942] []: >>> get_symbol(rmw_publisher_count_matched_subscriptions)
[INFO] [1589754423.065202539] []: >>> get_library()
[INFO] [1589754423.065211299] []: >>> get_symbol(rmw_publisher_get_actual_qos)
[INFO] [1589754423.065219865] []: >>> get_library()
[INFO] [1589754423.065228952] []: >>> get_symbol(rmw_publisher_event_init)
[INFO] [1589754423.065237168] []: >>> get_library()
[INFO] [1589754423.065244089] []: >>> get_symbol(rmw_publish_serialized_message)
[INFO] [1589754423.065250917] []: >>> get_library()
[INFO] [1589754423.065258428] []: >>> get_symbol(rmw_publisher_assert_liveliness)
[INFO] [1589754423.065264432] []: >>> get_library()
[INFO] [1589754423.065272556] []: >>> get_symbol(rmw_get_serialized_message_size)
[INFO] [1589754423.065279407] []: >>> get_library()
[INFO] [1589754423.065287362] []: >>> get_symbol(rmw_serialize)
[INFO] [1589754423.065293877] []: >>> get_library()
[INFO] [1589754423.065300911] []: >>> get_symbol(rmw_deserialize)
[INFO] [1589754423.065305489] []: >>> get_library()
[INFO] [1589754423.065311543] []: >>> get_symbol(rmw_init_subscription_allocation)
[INFO] [1589754423.065316857] []: >>> get_library()
[INFO] [1589754423.065321216] []: >>> get_symbol(rmw_fini_subscription_allocation)
[INFO] [1589754423.065328216] []: >>> get_library()
[INFO] [1589754423.065336049] []: >>> get_symbol(rmw_create_subscription)
[INFO] [1589754423.065341894] []: >>> get_library()
[INFO] [1589754423.065349396] []: >>> get_symbol(rmw_destroy_subscription)
[INFO] [1589754423.065356902] []: >>> get_library()
[INFO] [1589754423.065364640] []: >>> get_symbol(rmw_subscription_count_matched_publishers)
[INFO] [1589754423.065371440] []: >>> get_library()
[INFO] [1589754423.065380735] []: >>> get_symbol(rmw_subscription_get_actual_qos)
[INFO] [1589754423.065385003] []: >>> get_library()
[INFO] [1589754423.065392842] []: >>> get_symbol(rmw_subscription_event_init)
[INFO] [1589754423.065399067] []: >>> get_library()
[INFO] [1589754423.065407006] []: >>> get_symbol(rmw_take)
[INFO] [1589754423.065413948] []: >>> get_library()
[INFO] [1589754423.065421043] []: >>> get_symbol(rmw_take_with_info)
[INFO] [1589754423.065428096] []: >>> get_library()
[INFO] [1589754423.065434965] []: >>> get_symbol(rmw_take_serialized_message)
[INFO] [1589754423.065442151] []: >>> get_library()
[INFO] [1589754423.065450569] []: >>> get_symbol(rmw_take_serialized_message_with_info)
[INFO] [1589754423.065457179] []: >>> get_library()
[INFO] [1589754423.065467094] []: >>> get_symbol(rmw_take_loaned_message)
[INFO] [1589754423.065474343] []: >>> get_library()
[INFO] [1589754423.065482162] []: >>> get_symbol(rmw_take_loaned_message_with_info)
[INFO] [1589754423.065489254] []: >>> get_library()
[INFO] [1589754423.065496351] []: >>> get_symbol(rmw_return_loaned_message_from_subscription)
[INFO] [1589754423.065503526] []: >>> get_library()
[INFO] [1589754423.065510620] []: >>> get_symbol(rmw_create_client)
[INFO] [1589754423.065518062] []: >>> get_library()
[INFO] [1589754423.065525734] []: >>> get_symbol(rmw_destroy_client)
[INFO] [1589754423.065531167] []: >>> get_library()
[INFO] [1589754423.065539768] []: >>> get_symbol(rmw_send_request)
[INFO] [1589754423.065546819] []: >>> get_library()
[INFO] [1589754423.065554591] []: >>> get_symbol(rmw_take_response)
[INFO] [1589754423.065560409] []: >>> get_library()
[INFO] [1589754423.065565984] []: >>> get_symbol(rmw_create_service)
[INFO] [1589754423.065572099] []: >>> get_library()
[INFO] [1589754423.065580951] []: >>> get_symbol(rmw_destroy_service)
[INFO] [1589754423.065587419] []: >>> get_library()
[INFO] [1589754423.065595619] []: >>> get_symbol(rmw_take_request)
[INFO] [1589754423.065601515] []: >>> get_library()
[INFO] [1589754423.065609515] []: >>> get_symbol(rmw_send_response)
[INFO] [1589754423.065616668] []: >>> get_library()
[INFO] [1589754423.065624975] []: >>> get_symbol(rmw_take_event)
[INFO] [1589754423.065632480] []: >>> get_library()
[INFO] [1589754423.065638951] []: >>> get_symbol(rmw_create_guard_condition)
[INFO] [1589754423.065646648] []: >>> get_library()
[INFO] [1589754423.065654777] []: >>> get_symbol(rmw_destroy_guard_condition)
[INFO] [1589754423.065662132] []: >>> get_library()
[INFO] [1589754423.065670374] []: >>> get_symbol(rmw_trigger_guard_condition)
[INFO] [1589754423.065678044] []: >>> get_library()
[INFO] [1589754423.065685397] []: >>> get_symbol(rmw_create_wait_set)
[INFO] [1589754423.065692394] []: >>> get_library()
[INFO] [1589754423.065699572] []: >>> get_symbol(rmw_destroy_wait_set)
[INFO] [1589754423.065704798] []: >>> get_library()
[INFO] [1589754423.065712301] []: >>> get_symbol(rmw_wait)
[INFO] [1589754423.065718111] []: >>> get_library()
[INFO] [1589754423.065725964] []: >>> get_symbol(rmw_get_publisher_names_and_types_by_node)
[INFO] [1589754423.065733301] []: >>> get_library()
[INFO] [1589754423.065740512] []: >>> get_symbol(rmw_get_subscriber_names_and_types_by_node)
[INFO] [1589754423.065746902] []: >>> get_library()
[INFO] [1589754423.065754239] []: >>> get_symbol(rmw_get_service_names_and_types_by_node)
[INFO] [1589754423.065759743] []: >>> get_library()
[INFO] [1589754423.065768350] []: >>> get_symbol(rmw_get_client_names_and_types_by_node)
[INFO] [1589754423.065774470] []: >>> get_library()
[INFO] [1589754423.065782366] []: >>> get_symbol(rmw_get_topic_names_and_types)
[INFO] [1589754423.065789871] []: >>> get_library()
[INFO] [1589754423.065799981] []: >>> get_symbol(rmw_get_service_names_and_types)
[INFO] [1589754423.065804569] []: >>> get_library()
[INFO] [1589754423.065813414] []: >>> get_symbol(rmw_get_node_names)
[INFO] [1589754423.065820727] []: >>> get_library()
[INFO] [1589754423.065827494] []: >>> get_symbol(rmw_get_node_names_with_enclaves)
[INFO] [1589754423.065834865] []: >>> get_library()
[INFO] [1589754423.065843208] []: >>> get_symbol(rmw_count_publishers)
[INFO] [1589754423.065849456] []: >>> get_library()
[INFO] [1589754423.065856490] []: >>> get_symbol(rmw_count_subscribers)
[INFO] [1589754423.065865176] []: >>> get_library()
[INFO] [1589754423.065873211] []: >>> get_symbol(rmw_get_gid_for_publisher)
[INFO] [1589754423.065880593] []: >>> get_library()
[INFO] [1589754423.065888248] []: >>> get_symbol(rmw_compare_gids_equal)
[INFO] [1589754423.065895103] []: >>> get_library()
[INFO] [1589754423.065903389] []: >>> get_symbol(rmw_service_server_is_available)
[INFO] [1589754423.065909338] []: >>> get_library()
[INFO] [1589754423.065917402] []: >>> get_symbol(rmw_set_log_severity)
[INFO] [1589754423.065921444] []: >>> get_library()
[INFO] [1589754423.065927355] []: >>> get_symbol(rmw_get_publishers_info_by_topic)
[INFO] [1589754423.065932504] []: >>> get_library()
[INFO] [1589754423.065938781] []: >>> get_symbol(rmw_get_subscriptions_info_by_topic)
[INFO] [1589754423.065946070] []: >>> get_library()
[INFO] [1589754423.065951729] []: >>> get_symbol(rmw_init)
[INFO] [1589754423.065958791] []: >>> get_library()
[INFO] [1589754423.065969053] []: >>> rmw_init
Type: std_msgs/msg/String

Publisher count: 1

Node name: _ros2cli_7205
Node namespace: /
Topic type: std_msgs/msg/String
Endpoint type: PUBLISHER
GID: 01.0f.1b.26.25.1c.00.00.01.00.00.00.00.00.05.03.00.00.00.00.00.00.00.00
QoS profile:
  Reliability: RMW_QOS_POLICY_RELIABILITY_RELIABLE
  Durability: RMW_QOS_POLICY_DURABILITY_TRANSIENT_LOCAL
  Lifespan: 2147483651294967295 nanoseconds
  Deadline: 2147483651294967295 nanoseconds
  Liveliness: RMW_QOS_POLICY_LIVELINESS_AUTOMATIC
  Liveliness lease duration: 2147483651294967295 nanoseconds

Subscription count: 0