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https://github.com/boostorg/mqtt5.git
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3640a4fb2a
Summary: related to T13242 Reviewers: ivica Reviewed By: ivica Subscribers: miljen, iljazovic Differential Revision: https://repo.mireo.local/D26841
622 lines
20 KiB
C++
622 lines
20 KiB
C++
#ifndef ASYNC_MQTT5_ERROR_HPP
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#define ASYNC_MQTT5_ERROR_HPP
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#include <algorithm>
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#include <optional>
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#include <boost/asio/error.hpp>
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namespace async_mqtt5 {
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/**
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* \brief A representation of Disconnect Reason Code.
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*
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* \details Represents all Reason Codes that the Client can send to the Server
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* in the \__DISCONNECT\__ packet as the reason for the disconnection.
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*/
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enum class disconnect_rc_e : std::uint8_t {
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/** Close the connection normally. Do not send the Will Message. */
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normal_disconnection = 0x00,
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/** The Client wishes to disconnect but requires that
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the Server also publishes its Will Message. */
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disconnect_with_will_message = 0x04
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};
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namespace detail {
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enum class disconnect_rc_e : std::uint8_t {
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normal_disconnection = 0x00,
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disconnect_with_will_message = 0x04,
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unspecified_error = 0x80,
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malformed_packet = 0x81,
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protocol_error = 0x82,
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implementation_specific_error = 0x83,
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topic_name_invalid = 0x90,
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receive_maximum_exceeded = 0x93,
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topic_alias_invalid = 0x94,
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packet_too_large = 0x95,
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message_rate_too_high = 0x96,
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quota_exceeded = 0x97,
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administrative_action = 0x98,
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payload_format_invalid = 0x99
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};
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}
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namespace client {
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/**
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* \brief MQTT client error codes.
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*
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* \details Represents error that occur on the client side.
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*/
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enum class error : int {
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/// \cond INTERNAL
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/** Malformed packet has been detected. */
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malformed_packet = 100,
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/// \endcond
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/** The Client's session does not exist or it has expired. */
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session_expired,
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/** There are no more available Packet Identifiers to use. */
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pid_overrun,
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/** The Topic is invalid and does not conform to the specification. */
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invalid_topic,
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// publish
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/** The Server does not support the specified \ref qos_e. */
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qos_not_supported,
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/** The Server dos not support retained messages. */
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retain_not_available,
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/** The Client attempted to send a Topic Alias that is greater than Topic Alias Maximum. */
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topic_alias_maximum_reached
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};
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inline std::string client_error_to_string(error err) {
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switch (err) {
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case error::malformed_packet:
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return "Malformed packet has been detected";
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case error::session_expired:
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return "The Client's session does not exist or it has expired. ";
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case error::pid_overrun:
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return "There are no more available Packet Identifiers to use.";
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case error::invalid_topic:
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return "The Topic is invalid and "
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"does not conform to the specification.";
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case error::qos_not_supported:
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return "The Server does not support the specified QoS";
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case error::retain_not_available:
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return "The Server does not support retained messages.";
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case error::topic_alias_maximum_reached:
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return "The Client attempted to send a Topic Alias "
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"that is greater than Topic Alias Maximum.";
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default:
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return "Unknown client error";
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}
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}
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struct client_ec_category : public boost::system::error_category {
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const char* name() const noexcept override { return "mqtt_client_error"; }
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std::string message(int ev) const noexcept override {
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return client_error_to_string(static_cast<error>(ev));
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}
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};
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/// Returns the error category associated with \ref client::error.
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inline const client_ec_category& get_error_code_category() {
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static client_ec_category cat;
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return cat;
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}
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/// Creates an \ref error_code from a \ref client::error.
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inline boost::system::error_code make_error_code(error r) {
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return { static_cast<int>(r), get_error_code_category() };
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}
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} // end namespace client
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/// \cond internal
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namespace reason_codes {
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enum class category : uint8_t {
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none,
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connack, puback, pubrec,
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pubrel, pubcomp, suback,
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unsuback, auth, disconnect
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};
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} // end namespace reason_codes
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/// \endcond
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/**
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* \brief A class holding Reason Code values originating from Control Packets.
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*
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* \details A Reason Code is a one byte unsigned value that indicates the result of an operation.
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* Reason Codes less than 0x80 indicate successful completion of an operation.
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* The normal Reason Code for success is 0.
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* Reason Code values of 0x80 or greater indicate failure.
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* The \__CONNACK\__, \__PUBACK\__, \__PUBREC\__, \__PUBREL\__, \__PUBCOMP\__, \__DISCONNECT\__
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* and \__AUTH\__ Control Packets have a single Reason Code as part of the Variable Header.
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* The \__SUBACK\__ and \__UNSUBACK\__ packets contain a list of one or more Reason Codes in the Payload.
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*
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* \see See \__REASON_CODES\__ for a complete list of all possible instances of this class.
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*/
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class reason_code {
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uint8_t _code;
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reason_codes::category _category { reason_codes::category::none };
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public:
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/// \cond INTERNAL
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constexpr reason_code() : _code(0xff) {}
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constexpr reason_code(uint8_t code, reason_codes::category cat)
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: _code(code), _category(cat)
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{}
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constexpr explicit reason_code(uint8_t code) : _code(code) {}
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/// \endcond
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/// Copy constructor.
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reason_code(const reason_code&) = default;
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/// Move constructor.
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reason_code(reason_code&&) = default;
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/// Copy assignment operator.
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reason_code& operator=(const reason_code&) = default;
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/// Move assignment operator.
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reason_code& operator=(reason_code&&) = default;
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/**
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* \brief Indication if the object holds a Reason Code indicating an error.
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*
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* \details Any Reason Code holding a value equal or greater than 0x80.
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*/
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explicit operator bool() const noexcept {
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return _code >= 0x80;
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}
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/**
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* \brief Returns the byte value of the Reason Code.
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*/
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constexpr uint8_t value() const noexcept {
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return _code;
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}
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/// Insertion operator.
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friend std::ostream& operator<<(std::ostream& os, const reason_code& rc) {
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os << rc.message();
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return os;
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}
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/// Operator less than.
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friend bool operator<(const reason_code& lhs, const reason_code& rhs) {
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return lhs._code < rhs._code;
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}
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/// Equality operator.
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friend bool operator==(const reason_code& lhs, const reason_code& rhs) {
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return lhs._code == rhs._code && lhs._category == rhs._category;
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}
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/**
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* \brief Returns a message describing the meaning behind the Reason Code.
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*/
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std::string message() const {
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switch (_code) {
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case 0x00:
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if (_category == reason_codes::category::suback)
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return "The subscription is accepted with maximum QoS sent at 0";
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if (_category == reason_codes::category::disconnect)
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return "Close the connection normally. Do not send the Will Message";
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return "The operation completed successfully";
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case 0x01:
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return "The subscription is accepted with maximum QoS sent at 1";
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case 0x02:
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return "The subscription is accepted with maximum QoS sent at 2";
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case 0x04:
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return "The Client wishes to disconnect but requires"
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"that the Server also publishes its Will Message";
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case 0x10:
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return "The message is accepted but there are no subscribers";
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case 0x11:
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return "No matching Topic Filter is being used by the Client.";
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case 0x18:
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return "Continue the authentication with another step";
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case 0x19:
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return "Initiate a re-authentication";
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case 0x80:
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return "The Server does not wish to reveal the reason for the"
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"failure, or none of the other Reason Codes apply";
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case 0x81:
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return "Data within the packet could not be correctly parsed";
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case 0x82:
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return "Data in the packet does not conform to this specification";
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case 0x83:
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return "The packet is valid but not accepted by this Server";
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case 0x84:
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return "The Server does not support the requested "
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"version of the MQTT protocol";
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case 0x85:
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return "The Client ID is valid but not allowed by this Server";
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case 0x86:
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return "The Server does not accept the User Name or Password provided";
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case 0x87:
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return "The request is not authorized";
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case 0x88:
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return "The MQTT Server is not available";
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case 0x89:
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return "The MQTT Server is busy, try again later";
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case 0x8a:
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return "The Client has been banned by administrative action";
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case 0x8b:
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return "The Server is shutting down";
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case 0x8c:
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return "The authentication method is not supported or "
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"does not match the method currently in use";
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case 0x8d:
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return "No packet has been received for 1.5 times the Keepalive time";
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case 0x8e:
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return "Another Connection using the same ClientID has connected "
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"causing this Connection to be closed";
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case 0x8f:
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return "The Topic Filer is not malformed, but it is not accepted";
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case 0x90:
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return "The Topic Name is not malformed, but it is not accepted";
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case 0x91:
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return "The Packet Identifier is already in use";
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case 0x92:
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return "The Packet Identifier is not known";
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case 0x93:
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return "The Client or Server has received more than Receive "
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"Maximum publication for which it has not sent PUBACK or PUBCOMP";
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case 0x94:
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return "The Client or Server received a PUBLISH packet containing "
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"a Topic Alias greater than the Maximum Topic Alias";
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case 0x95:
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return "The packet exceeded the maximum permissible size";
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case 0x96:
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return "The received data rate is too high";
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case 0x97:
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return "An implementation or administrative imposed limit has been exceeded";
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case 0x98:
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return "The Connection is closed due to an administrative action";
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case 0x99:
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return "The Payload does not match the specified Payload Format Indicator";
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case 0x9a:
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return "The Server does not support retained messages";
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case 0x9b:
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return "The Server does not support the QoS the Client specified or "
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"it is greater than the Maximum QoS specified";
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case 0x9c:
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return "The Client should temporarily use another server";
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case 0x9d:
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return "The Client should permanently use another server";
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case 0x9e:
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return "The Server does not support Shared Subscriptions for this Client";
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case 0x9f:
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return "The connection rate limit has been exceeded";
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case 0xa0:
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return "The maximum connection time authorized for this "
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"connection has been exceeded";
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case 0xa1:
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return "The Server does not support Subscription Identifiers";
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case 0xa2:
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return "The Server does not support Wildcard Subscriptions";
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case 0xff:
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return "No reason code";
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default:
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return "Invalid reason code";
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}
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}
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};
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namespace reason_codes {
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/** No Reason Code. A \ref client::error occurred.*/
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constexpr reason_code empty {};
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/** The operation completed successfully. */
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constexpr reason_code success { 0x00 };
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/** Close the connection normally. Do not send the Will Message. */
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constexpr reason_code normal_disconnection { 0x00, category::disconnect };
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/** The subscription is accepted with maximum QoS sent at 0. */
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constexpr reason_code granted_qos_0 { 0x00, category::suback };
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/** The subscription is accepted with maximum QoS sent at 1. */
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constexpr reason_code granted_qos_1 { 0x01 };
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/** The subscription is accepted with maximum QoS sent at 2 */
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constexpr reason_code granted_qos_2 { 0x02 };
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/** The Client wishes to disconnect but requires that
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the Server also publishes its Will Message. */
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constexpr reason_code disconnect_with_will_message { 0x04 };
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/** The message is accepted but there are no subscribers. */
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constexpr reason_code no_matching_subscribers { 0x10 };
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/** No matching Topic Filter is being used by the Client. */
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constexpr reason_code no_subscription_existed { 0x11 };
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/** Continue the authentication with another step. */
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constexpr reason_code continue_authentication { 0x18 };
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/** Initiate a re-authentication. */
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constexpr reason_code reauthenticate { 0x19 };
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/** The Server does not wish to reveal the reason for the
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failure, or none of the other Reason Codes apply. */
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constexpr reason_code unspecified_error { 0x80 };
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/** Data within the packet could not be correctly parsed. */
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constexpr reason_code malformed_packet { 0x81 };
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/** Data in the packet does not conform to this specification. */
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constexpr reason_code protocol_error { 0x82 };
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/** The packet is valid but not accepted by this Server. */
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constexpr reason_code implementation_specific_error { 0x83 };
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/** The Server does not support the requested version of the MQTT protocol. */
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constexpr reason_code unsupported_protocol_version { 0x84 };
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/** The Client ID is valid but not allowed by this Server. */
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constexpr reason_code client_id_not_valid { 0x85 };
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/** The Server does not accept the User Name or Password provided. */
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constexpr reason_code bad_username_or_password { 0x86 };
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/** The request is not authorized. */
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constexpr reason_code not_authorized { 0x87 };
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/** The MQTT Server is not available. */
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constexpr reason_code server_unavailable { 0x88 };
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/** The MQTT Server is busy, try again later. */
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constexpr reason_code server_busy { 0x89 };
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/** The Client has been banned by administrative action. */
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constexpr reason_code banned { 0x8a };
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/** The Server is shutting down. */
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constexpr reason_code server_shutting_down { 0x8b };
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/** The authentication method is not supported or
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does not match the method currently in use. */
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constexpr reason_code bad_authentication_method { 0x8c };
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/** No packet has been received for 1.5 times the Keepalive time. */
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constexpr reason_code keep_alive_timeout { 0x8d };
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/** Another Connection using the same ClientID has connected
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causing this Connection to be closed. */
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constexpr reason_code session_taken_over { 0x8e };
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/** The Topic Filter is not malformed, but it is not accepted. */
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constexpr reason_code topic_filter_invalid { 0x8f };
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/** The Topic Name is not malformed, but it is not accepted. */
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constexpr reason_code topic_name_invalid { 0x90 };
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/** The Packet Identifier is already in use. */
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constexpr reason_code packet_id_in_use { 0x91 };
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/** The Packet Identifier is not known. */
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constexpr reason_code packet_id_not_found { 0x92 };
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/** The Client or Server has received more than Receive
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Maximum publication for which it has not sent PUBACK or PUBCOMP. */
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constexpr reason_code receive_maximum_exceeded { 0x93 };
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/** The Client or Server received a PUBLISH packet containing
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a Topic Alias greater than the Maximum Topic Alias. */
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constexpr reason_code topic_alias_invalid { 0x94 };
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/** The packet exceeded the maximum permissible size. */
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constexpr reason_code packet_too_large { 0x95 };
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/** The received data rate is too high. */
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constexpr reason_code message_rate_too_high { 0x96 };
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/** An implementation or administrative imposed limit has been exceeded. */
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constexpr reason_code quota_exceeded { 0x97 };
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/** The Connection is closed due to an administrative action. */
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constexpr reason_code administrative_action { 0x98 };
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/** The Payload does not match the specified Payload Format Indicator. */
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constexpr reason_code payload_format_invalid { 0x99 };
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/** The Server does not support retained messages. */
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constexpr reason_code retain_not_supported { 0x9a };
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/** The Server does not support the QoS the Client specified or
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it is greater than the Maximum QoS specified. */
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constexpr reason_code qos_not_supported { 0x9b };
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/** The Client should temporarily use another server. */
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constexpr reason_code use_another_server { 0x9c };
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/** The Client should permanently use another server. */
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constexpr reason_code server_moved { 0x9d };
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/** The Server does not support Shared Subscriptions for this Client. */
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constexpr reason_code shared_subscriptions_not_supported { 0x9e };
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/** The connection rate limit has been exceeded. */
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constexpr reason_code connection_rate_exceeded { 0x9f };
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/** The maximum connection time authorized for this
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connection has been exceeded. */
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constexpr reason_code maximum_connect_time { 0xa0 };
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/** The Server does not support Subscription Identifiers. */
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constexpr reason_code subscription_ids_not_supported { 0xa1 };
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/** The Server does not support Wildcard Subscriptions. */
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constexpr reason_code wildcard_subscriptions_not_supported { 0xa2 };
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namespace detail {
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template <
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category cat,
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std::enable_if_t<cat == category::connack, bool> = true
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>
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std::pair<reason_code*, size_t> valid_codes() {
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static reason_code valid_codes[] = {
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success, unspecified_error, malformed_packet,
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protocol_error, implementation_specific_error,
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unsupported_protocol_version, client_id_not_valid,
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bad_username_or_password, not_authorized,
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server_unavailable, server_busy, banned,
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bad_authentication_method, topic_name_invalid,
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packet_too_large, quota_exceeded,
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payload_format_invalid, retain_not_supported,
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qos_not_supported, use_another_server,
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server_moved, connection_rate_exceeded
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};
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static size_t len = sizeof(valid_codes) / sizeof(reason_code);
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return std::make_pair(valid_codes, len);
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}
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template <
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category cat,
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std::enable_if_t<cat == category::auth, bool> = true
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>
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std::pair<reason_code*, size_t> valid_codes() {
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static reason_code valid_codes[] = {
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success, continue_authentication
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};
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static size_t len = sizeof(valid_codes) / sizeof(reason_code);
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return std::make_pair(valid_codes, len);
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}
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template <
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category cat,
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std::enable_if_t<
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cat == category::puback || cat == category::pubrec, bool
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> = true
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>
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|
std::pair<reason_code*, size_t> valid_codes() {
|
|
static reason_code valid_codes[] = {
|
|
success, no_matching_subscribers, unspecified_error,
|
|
implementation_specific_error, not_authorized,
|
|
topic_name_invalid, packet_id_in_use,
|
|
quota_exceeded, payload_format_invalid
|
|
};
|
|
static size_t len = sizeof(valid_codes) / sizeof(reason_code);
|
|
return std::make_pair(valid_codes, len);
|
|
}
|
|
|
|
template <
|
|
category cat,
|
|
std::enable_if_t<
|
|
cat == category::pubrel || cat == category::pubcomp, bool
|
|
> = true
|
|
>
|
|
std::pair<reason_code*, size_t> valid_codes() {
|
|
static reason_code valid_codes[] = {
|
|
success, packet_id_not_found
|
|
};
|
|
static size_t len = sizeof(valid_codes) / sizeof(reason_code);
|
|
return std::make_pair(valid_codes, len);
|
|
}
|
|
|
|
template <
|
|
category cat,
|
|
std::enable_if_t<cat == category::suback, bool> = true
|
|
>
|
|
std::pair<reason_code*, size_t> valid_codes() {
|
|
static reason_code valid_codes[] = {
|
|
granted_qos_0, granted_qos_1, granted_qos_2,
|
|
unspecified_error, implementation_specific_error,
|
|
not_authorized, topic_filter_invalid,
|
|
packet_id_in_use, quota_exceeded,
|
|
shared_subscriptions_not_supported,
|
|
subscription_ids_not_supported,
|
|
wildcard_subscriptions_not_supported
|
|
};
|
|
static size_t len = sizeof(valid_codes) / sizeof(reason_code);
|
|
return std::make_pair(valid_codes, len);
|
|
}
|
|
|
|
template <
|
|
category cat,
|
|
std::enable_if_t<cat == category::unsuback, bool> = true
|
|
>
|
|
std::pair<reason_code*, size_t> valid_codes() {
|
|
static reason_code valid_codes[] = {
|
|
success, no_subscription_existed,
|
|
unspecified_error, implementation_specific_error,
|
|
not_authorized, topic_filter_invalid,
|
|
packet_id_in_use
|
|
};
|
|
static size_t len = sizeof(valid_codes) / sizeof(reason_code);
|
|
return std::make_pair(valid_codes, len);
|
|
}
|
|
|
|
template <
|
|
category cat,
|
|
std::enable_if_t<cat == category::disconnect, bool> = true
|
|
>
|
|
std::pair<reason_code*, size_t> valid_codes() {
|
|
static reason_code valid_codes[] = {
|
|
normal_disconnection, unspecified_error,
|
|
malformed_packet,protocol_error,
|
|
implementation_specific_error, not_authorized,
|
|
server_busy, server_shutting_down,
|
|
keep_alive_timeout, session_taken_over,
|
|
topic_filter_invalid, topic_name_invalid,
|
|
receive_maximum_exceeded, topic_alias_invalid,
|
|
packet_too_large,message_rate_too_high,
|
|
quota_exceeded, administrative_action,
|
|
payload_format_invalid, retain_not_supported,
|
|
qos_not_supported, use_another_server,
|
|
server_moved, shared_subscriptions_not_supported,
|
|
connection_rate_exceeded, maximum_connect_time,
|
|
subscription_ids_not_supported,
|
|
wildcard_subscriptions_not_supported
|
|
};
|
|
static size_t len = sizeof(valid_codes) / sizeof(reason_code);
|
|
return std::make_pair(valid_codes, len);
|
|
}
|
|
|
|
|
|
} // end namespace detail
|
|
} // end namespace reason_codes
|
|
|
|
|
|
template <reason_codes::category cat>
|
|
std::optional<reason_code> to_reason_code(uint8_t code) {
|
|
auto [ptr, len] = reason_codes::detail::valid_codes<cat>();
|
|
auto it = std::lower_bound(ptr, ptr + len, reason_code(code));
|
|
|
|
if (it->value() == code)
|
|
return *it;
|
|
return std::nullopt;
|
|
}
|
|
|
|
} // end namespace async_mqtt5
|
|
|
|
namespace boost::system {
|
|
|
|
template <>
|
|
struct is_error_code_enum <async_mqtt5::client::error> : std::true_type {};
|
|
|
|
} // end namespace boost::system
|
|
|
|
|
|
#endif // !ASYNC_MQTT5_ERROR_HPP
|