mirror of
https://gitee.com/jiuyilian/embedded-framework.git
synced 2025-10-24 18:20:15 -04:00
83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
#ifndef HV_MQTT_PROTOCOL_H_
|
|
#define HV_MQTT_PROTOCOL_H_
|
|
|
|
#include "hexport.h"
|
|
|
|
#define DEFAULT_MQTT_PORT 1883
|
|
|
|
#define MQTT_PROTOCOL_V31 3
|
|
#define MQTT_PROTOCOL_V311 4
|
|
#define MQTT_PROTOCOL_V5 5 // Not yet supproted
|
|
|
|
#define MQTT_PROTOCOL_NAME "MQTT"
|
|
#define MQTT_PROTOCOL_NAME_v31 "MQIsdp"
|
|
|
|
/*
|
|
* connect flags
|
|
* 0 1 2 3-4 5 6 7
|
|
* reserved clean_session has_will will_qos will_retain has_password has_username
|
|
*/
|
|
#define MQTT_CONN_CLEAN_SESSION 0x02
|
|
#define MQTT_CONN_HAS_WILL 0x04
|
|
#define MQTT_CONN_WILL_RETAIN 0x20
|
|
#define MQTT_CONN_HAS_PASSWORD 0x40
|
|
#define MQTT_CONN_HAS_USERNAME 0x80
|
|
|
|
typedef enum {
|
|
MQTT_TYPE_CONNECT = 1,
|
|
MQTT_TYPE_CONNACK = 2,
|
|
MQTT_TYPE_PUBLISH = 3,
|
|
MQTT_TYPE_PUBACK = 4,
|
|
MQTT_TYPE_PUBREC = 5,
|
|
MQTT_TYPE_PUBREL = 6,
|
|
MQTT_TYPE_PUBCOMP = 7,
|
|
MQTT_TYPE_SUBSCRIBE = 8,
|
|
MQTT_TYPE_SUBACK = 9,
|
|
MQTT_TYPE_UNSUBSCRIBE = 10,
|
|
MQTT_TYPE_UNSUBACK = 11,
|
|
MQTT_TYPE_PINGREQ = 12,
|
|
MQTT_TYPE_PINGRESP = 13,
|
|
MQTT_TYPE_DISCONNECT = 14,
|
|
} mqtt_type_e;
|
|
|
|
typedef enum {
|
|
MQTT_CONNACK_ACCEPTED = 0,
|
|
MQTT_CONNACK_REFUSED_PROTOCOL_VERSION = 1,
|
|
MQTT_CONNACK_REFUSED_IDENTIFIER_REJECTED = 2,
|
|
MQTT_CONNACK_REFUSED_SERVER_UNAVAILABLE = 3,
|
|
MQTT_CONNACK_REFUSED_BAD_USERNAME_PASSWORD = 4,
|
|
MQTT_CONNACK_REFUSED_NOT_AUTHORIZED = 5,
|
|
} mqtt_connack_e;
|
|
|
|
typedef struct mqtt_head_s {
|
|
unsigned char type: 4;
|
|
unsigned char dup: 1;
|
|
unsigned char qos: 2;
|
|
unsigned char retain: 1;
|
|
unsigned int length;
|
|
} mqtt_head_t;
|
|
|
|
typedef struct mqtt_message_s {
|
|
unsigned int topic_len;
|
|
const char* topic;
|
|
unsigned int payload_len;
|
|
const char* payload;
|
|
unsigned char qos;
|
|
unsigned char retain;
|
|
} mqtt_message_t;
|
|
|
|
BEGIN_EXTERN_C
|
|
|
|
#define DEFAULT_MQTT_PACKAGE_MAX_LENGTH (1 << 28) // 256M
|
|
HV_INLINE int mqtt_estimate_length(mqtt_head_t* head) {
|
|
// 28 bits => 4*7 bits varint
|
|
return 1 + 4 + head->length;
|
|
}
|
|
|
|
HV_EXPORT int mqtt_head_pack(mqtt_head_t* head, unsigned char buf[]);
|
|
HV_EXPORT int mqtt_head_unpack(mqtt_head_t* head, const unsigned char* buf, int len);
|
|
|
|
END_EXTERN_C
|
|
|
|
#endif // HV_MQTT_PROTOCOL_H_
|