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66 lines
1.2 KiB
C++
66 lines
1.2 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 base class for acking some mqtt message, used by some mqtt message type.
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*/
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class ACL_CPP_API mqtt_ack : public mqtt_message {
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public:
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/**
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* usually used when build a ack mqtt message.
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* @param type {mqtt_type_t}
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*/
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mqtt_ack(mqtt_type_t type);
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/**
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* usually used when parsing a ack mqtt messsage.
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* @param header {const mqtt_header&} will be copied internal.
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*/
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mqtt_ack(const mqtt_header& header);
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virtual ~mqtt_ack(void);
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/**
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* set the mqtt message's id.
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* @param id {unsigned short} should > 0 && <= 65535.
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*/
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void set_pkt_id(unsigned short id);
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/**
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* get the mqtt message's id
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* @return {unsigned short} if some error happened, 0 will be returned.
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*/
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unsigned short get_pkt_id(void) const {
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return pkt_id_;
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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(void) const {
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return finished_;
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}
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public:
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// for parsing message header in streaming mode.
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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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bool finished_;
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char hbuf_[2];
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unsigned hlen_;
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unsigned short pkt_id_;
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};
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} // namespace acl
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