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You can use ros2 topic echo, you just need to set correct QoS profile and durability:

ros2 topic echo --qos-profile services_default --qos-durability transient_local foo


BTW, maybe it is better to use DurabilityPolicy.TRANSIENT_LOCAL instead of QoSDurabilityPolicy.RMW_QOS_POLICY_DURABILITY_TRANSIENT_LOCAL as it is done in static_transform_broadcaster: https://github.com/ros2/geometry2/blob/6788c1b78fe35e1a459a9d8f184afeb79792bd71/tf2_ros/src/tf2_ros/static_transform_broadcaster.py#L55

You can use ros2 topic echo, you just need to set correct QoS profile and durability:

ros2 topic echo --qos-profile services_default --qos-durability transient_local foo foo


BTW, maybe it is better to use DurabilityPolicy.TRANSIENT_LOCAL instead of QoSDurabilityPolicy.RMW_QOS_POLICY_DURABILITY_TRANSIENT_LOCAL as it is done in static_transform_broadcaster: https://github.com/ros2/geometry2/blob/6788c1b78fe35e1a459a9d8f184afeb79792bd71/tf2_ros/src/tf2_ros/static_transform_broadcaster.py#L55

You can use ros2 topic echo, you just need to set correct QoS profile and durability:

ros2 topic echo --qos-profile services_default --qos-durability transient_local foofoo


BTW, maybe it is better to use DurabilityPolicy.TRANSIENT_LOCAL instead of QoSDurabilityPolicy.RMW_QOS_POLICY_DURABILITY_TRANSIENT_LOCAL as it is done in static_transform_broadcaster: https://github.com/ros2/geometry2/blob/6788c1b78fe35e1a459a9d8f184afeb79792bd71/tf2_ros/src/tf2_ros/static_transform_broadcaster.py#L55