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