Function pamoja_mqtt_client_publish 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pamoja_mqtt_client_publish(
    client: *mut PamojaMqttClient,
    topic: *const c_char,
    payload: *const u8,
    payload_len: usize,
) -> PamojaStatus

Publishes a payload to a topic.

Returns

PamojaStatus::Ok once the payload is handed to the transport, or an error status.

Safety

client must be a live handle from pamoja_mqtt_client_new; topic must be a valid null-terminated UTF-8 string; and payload must point to at least payload_len bytes, or be null when payload_len is 0.