conn

struct bt_conn* bt_mgmt_msg::conn

Valid only in a ZBUS_OBSERVER_LISTENER_TYPE callback. ZBUS_OBSERVER_SUBSCRIBER_TYPE, ZBUS_OBSERVER_MSG_SUBSCRIBER_TYPE and ZBUS_OBSERVER_ASYNC_LISTENER_TYPE must NOT use this pointer, as bt_mgmt may release its reference before the observer processes the message.

A ZBUS_OBSERVER_LISTENER_TYPE that needs to keep this pointer beyond its callback must call bt_conn_ref() before returning, and bt_conn_unref() when done.