Success continue_authentication disconnect_with_will_message granted_qos_0 granted_qos_1 granted_qos_2 no_matching_subscribers no_subscription_existed normal_disconnection reauthenticate success Error administrative_action bad_authentication_method bad_username_or_password banned client_identifier_not_valid connection_rate_exceeded implementation_specific_error keep_alive_timeout maximum_connect_time message_rate_too_high not_authorized packet_identifier_in_use packet_identifier_not_found packet_too_large payload_format_invalid qos_not_supported quota_exceeded receive_maximum_exceeded retain_not_supported server_busy server_moved server_shutting_down server_unavailable session_taken_over shared_subscriptions_not_supported subscription_ids_not_supported topic_alias_invalid topic_filter_invalid topic_name_invalid unsupported_protocol_version use_another_server wildcard_subscriptions_not_supported Special empty