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101 lines
1.9 KiB
C++
101 lines
1.9 KiB
C++
#pragma once
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#include "mqtt_message.hpp"
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namespace acl {
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/**
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* the status of connection.
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*/
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enum {
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MQTT_CONNACK_OK = 0x00,
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MQTT_CONNACK_ERR_VER = 0x01,
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MQTT_CONNACK_ERR_CID = 0x02,
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MQTT_CONNACK_ERR_SVR = 0x03,
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MQTT_CONNACK_ERR_AUTH = 0x04,
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MQTT_CONNACK_ERR_DENY = 0x05,
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};
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/**
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* mqtt message object for the MQTT_CONNACK type.
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*/
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class ACL_CPP_API mqtt_connack : public mqtt_message {
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public:
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/**
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* constructor for creating MQTT_CONNACK mqtt message object.
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* @see mqtt_message
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*/
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mqtt_connack();
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/**
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* constructor for creating MQTT_CONNACK mqtt message object.
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* @see mqtt_message
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*/
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mqtt_connack(const mqtt_header& header);
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~mqtt_connack();
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/**
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* set the session control for the connection
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* @param on {bool}
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* @return {mqtt_connack&}
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*/
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mqtt_connack& set_session(bool on);
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/**
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* set the connect return code
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* @param code {unsigned char} defined as MQTT_CONNACK_XXX above.
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* @return {mqtt_connack&}
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*/
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mqtt_connack& set_connack_code(unsigned char code);
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/**
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* get the session control status
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* @return {bool}
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*/
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bool get_session() const {
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return session_;
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}
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/**
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* get the connect resturn code
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* @return {unsigned char} defined as MQTT_CONNACK_XXX above.
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*/
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unsigned char get_connack_code() const {
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return connack_code_;
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}
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protected:
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// @override
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bool to_string(string& out);
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// @override
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int update(const char* data, int dlen);
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// @override
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bool finished() const {
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return finished_;
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}
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public:
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/**
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* (internal) update mqtt header data for parsing mqtt data.
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* @param data {const char*} the data to be parsed.
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* @param dlen {int} the length of data.
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* @return {int} return the length of the left data.
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*/
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int update_header_var(const char* data, int dlen);
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private:
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unsigned status_;
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int dlen_;
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char buff_[2];
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unsigned char conn_flags_;
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unsigned char connack_code_;
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bool session_;
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bool finished_;
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};
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} // namespace acl
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