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#ifndef MQTT_CONSTANTS_H
#define MQTT_CONSTANTS_H
#define MQTT_MAX_QOS 0x02
#define MQTT_VERSION_5_0 0x5
/* [MQTT-1.5.5] most significant bit
of MQTT Variable Byte Integer signifies
there are more bytes following */
#define MQTT_VBI_CONTINUATION_FLAG 0x80
#define MQTT_VBI_DATA_MASK 0x7F
#define MQTT_VBI_MAXBYTES 4
/* MQTT control packet types as defined in
2.1.2 MQTT Control Packet type */
#define MQTT_CPT_CONNECT 0x1
#define MQTT_CPT_CONNACK 0x2
#define MQTT_CPT_PUBLISH 0x3
#define MQTT_CPT_PUBACK 0x4
#define MQTT_CPT_PUBREC 0x5
#define MQTT_CPT_PUBREL 0x6
#define MQTT_CPT_PUBCOMP 0x7
#define MQTT_CPT_SUBSCRIBE 0x8
#define MQTT_CPT_SUBACK 0x9
#define MQTT_CPT_UNSUBSCRIBE 0xA
#define MQTT_CPT_UNSUBACK 0xB
#define MQTT_CPT_PINGREQ 0xC
#define MQTT_CPT_PINGRESP 0xD
#define MQTT_CPT_DISCONNECT 0xE
#define MQTT_CPT_AUTH 0xF
// MQTT CONNECT FLAGS (spec:3.1.2.3)
#define MQTT_CONNECT_FLAG_USERNAME 0x80
#define MQTT_CONNECT_FLAG_PASSWORD 0x40
#define MQTT_CONNECT_FLAG_LWT_RETAIN 0x20
#define MQTT_CONNECT_FLAG_LWT 0x04
#define MQTT_CONNECT_FLAG_CLEAN_START 0x02
#define MQTT_CONNECT_FLAG_QOS_MASK 0x18
#define MQTT_CONNECT_FLAG_QOS_BITSHIFT 3
#define MQTT_MAX_CLIENT_ID 23 /* [MQTT-3.1.3-5] */
// MQTT Property identifiers [MQTT-2.2.2.2]
#define MQTT_PROP_PAYLOAD_FMT_INDICATOR 0x01
#define MQTT_PROP_PAYLOAD_FMT_INDICATOR_NAME "Payload Format Indicator"
#define MQTT_PROP_MSG_EXPIRY_INTERVAL 0x02
#define MQTT_PROP_MSG_EXPIRY_INTERVAL_NAME "Message Expiry Interval"
#define MQTT_PROP_CONTENT_TYPE 0x03
#define MQTT_PROP_CONTENT_TYPE_NAME "Content Type"
#define MQTT_PROP_RESPONSE_TOPIC 0x08
#define MQTT_PROP_RESPONSE_TOPIC_NAME "Response Topic"
#define MQTT_PROP_CORRELATION_DATA 0x09
#define MQTT_PROP_CORRELATION_DATA_NAME "Correlation Data"
#define MQTT_PROP_SUB_IDENTIFIER 0x0B
#define MQTT_PROP_SUB_IDENTIFIER_NAME "Subscription Identifier"
#define MQTT_PROP_SESSION_EXPIRY_INTERVAL 0x11
#define MQTT_PROP_SESSION_EXPIRY_INTERVAL_NAME "Session Expiry Interval"
#define MQTT_PROP_ASSIGNED_CLIENT_ID 0x12
#define MQTT_PROP_ASSIGNED_CLIENT_ID_NAME "Assigned Client Identifier"
#define MQTT_PROP_SERVER_KEEP_ALIVE 0x13
#define MQTT_PROP_SERVER_KEEP_ALIVE_NAME "Server Keep Alive"
#define MQTT_PROP_AUTH_METHOD 0x15
#define MQTT_PROP_AUTH_METHOD_NAME "Authentication Method"
#define MQTT_PROP_AUTH_DATA 0x16
#define MQTT_PROP_AUTH_DATA_NAME "Authentication Data"
#define MQTT_PROP_REQ_PROBLEM_INFO 0x17
#define MQTT_PROP_REQ_PROBLEM_INFO_NAME "Request Problem Information"
#define MQTT_PROP_WILL_DELAY_INTERVAL 0x18
#define MQTT_PROP_WIIL_DELAY_INTERVAL_NAME "Will Delay Interval"
#define MQTT_PROP_REQ_RESP_INFORMATION 0x19
#define MQTT_PROP_REQ_RESP_INFORMATION_NAME "Request Response Information"
#define MQTT_PROP_RESP_INFORMATION 0x1A
#define MQTT_PROP_RESP_INFORMATION_NAME "Response Information"
#define MQTT_PROP_SERVER_REF 0x1C
#define MQTT_PROP_SERVER_REF_NAME "Server Reference"
#define MQTT_PROP_REASON_STR 0x1F
#define MQTT_PROP_REASON_STR_NAME "Reason String"
#define MQTT_PROP_RECEIVE_MAX 0x21
#define MQTT_PROP_RECEIVE_MAX_NAME "Receive Maximum"
#define MQTT_PROP_TOPIC_ALIAS_MAX 0x22
#define MQTT_PROP_TOPIC_ALIAS_MAX_NAME "Topic Alias Maximum"
#define MQTT_PROP_TOPIC_ALIAS 0x23
#define MQTT_PROP_TOPIC_ALIAS_NAME "Topic Alias"
#define MQTT_PROP_MAX_QOS 0x24
#define MQTT_PROP_MAX_QOS_NAME "Maximum QoS"
#define MQTT_PROP_RETAIN_AVAIL 0x25
#define MQTT_PROP_RETAIN_AVAIL_NAME "Retain Available"
#define MQTT_PROP_USR 0x26
#define MQTT_PROP_USR_NAME "User Property"
#define MQTT_PROP_MAX_PKT_SIZE 0x27
#define MQTT_PROP_MAX_PKT_SIZE_NAME "Maximum Packet Size"
#define MQTT_PROP_WILDCARD_SUB_AVAIL 0x28
#define MQTT_PROP_WILDCARD_SUB_AVAIL_NAME "Wildcard Subscription Available"
#define MQTT_PROP_SUB_ID_AVAIL 0x29
#define MQTT_PROP_SUB_ID_AVAIL_NAME "Subscription Identifier Available"
#define MQTT_PROP_SHARED_SUB_AVAIL 0x2A
#define MQTT_PROP_SHARED_SUB_AVAIL_NAME "Shared Subscription Available"
#endif /* MQTT_CONSTANTS_H */
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