| 1 | // Copyright: SPDX-License-Identifier: GPL-3.0-only |
| 2 | |
| 3 | #ifndef MQTT_CONSTANTS_H |
| 4 | #define MQTT_CONSTANTS_H |
| 5 | |
| 6 | #define MQTT_MAX_QOS 0x02 |
| 7 | |
| 8 | #define MQTT_VERSION_5_0 0x5 |
| 9 | |
| 10 | /* [MQTT-1.5.5] most significant bit |
| 11 | of MQTT Variable Byte Integer signifies |
| 12 | there are more bytes following */ |
| 13 | #define MQTT_VBI_CONTINUATION_FLAG 0x80 |
| 14 | #define MQTT_VBI_DATA_MASK 0x7F |
| 15 | #define MQTT_VBI_MAXBYTES 4 |
| 16 | |
| 17 | /* MQTT control packet types as defined in |
| 18 | 2.1.2 MQTT Control Packet type */ |
| 19 | #define MQTT_CPT_CONNECT 0x1 |
| 20 | #define MQTT_CPT_CONNACK 0x2 |
| 21 | #define MQTT_CPT_PUBLISH 0x3 |
| 22 | #define MQTT_CPT_PUBACK 0x4 |
| 23 | #define MQTT_CPT_PUBREC 0x5 |
| 24 | #define MQTT_CPT_PUBREL 0x6 |
| 25 | #define MQTT_CPT_PUBCOMP 0x7 |
| 26 | #define MQTT_CPT_SUBSCRIBE 0x8 |
| 27 | #define MQTT_CPT_SUBACK 0x9 |
| 28 | #define MQTT_CPT_UNSUBSCRIBE 0xA |
| 29 | #define MQTT_CPT_UNSUBACK 0xB |
| 30 | #define MQTT_CPT_PINGREQ 0xC |
| 31 | #define MQTT_CPT_PINGRESP 0xD |
| 32 | #define MQTT_CPT_DISCONNECT 0xE |
| 33 | #define MQTT_CPT_AUTH 0xF |
| 34 | |
| 35 | // MQTT CONNECT FLAGS (spec:3.1.2.3) |
| 36 | #define MQTT_CONNECT_FLAG_USERNAME 0x80 |
| 37 | #define MQTT_CONNECT_FLAG_PASSWORD 0x40 |
| 38 | #define MQTT_CONNECT_FLAG_LWT_RETAIN 0x20 |
| 39 | #define MQTT_CONNECT_FLAG_LWT 0x04 |
| 40 | #define MQTT_CONNECT_FLAG_CLEAN_START 0x02 |
| 41 | |
| 42 | #define MQTT_CONNECT_FLAG_QOS_MASK 0x18 |
| 43 | #define MQTT_CONNECT_FLAG_QOS_BITSHIFT 3 |
| 44 | |
| 45 | #define MQTT_MAX_CLIENT_ID 23 /* [MQTT-3.1.3-5] */ |
| 46 | |
| 47 | // MQTT Property identifiers [MQTT-2.2.2.2] |
| 48 | #define MQTT_PROP_PAYLOAD_FMT_INDICATOR 0x01 |
| 49 | #define MQTT_PROP_PAYLOAD_FMT_INDICATOR_NAME "Payload Format Indicator" |
| 50 | #define MQTT_PROP_MSG_EXPIRY_INTERVAL 0x02 |
| 51 | #define MQTT_PROP_MSG_EXPIRY_INTERVAL_NAME "Message Expiry Interval" |
| 52 | #define MQTT_PROP_CONTENT_TYPE 0x03 |
| 53 | #define MQTT_PROP_CONTENT_TYPE_NAME "Content Type" |
| 54 | #define MQTT_PROP_RESPONSE_TOPIC 0x08 |
| 55 | #define MQTT_PROP_RESPONSE_TOPIC_NAME "Response Topic" |
| 56 | #define MQTT_PROP_CORRELATION_DATA 0x09 |
| 57 | #define MQTT_PROP_CORRELATION_DATA_NAME "Correlation Data" |
| 58 | #define MQTT_PROP_SUB_IDENTIFIER 0x0B |
| 59 | #define MQTT_PROP_SUB_IDENTIFIER_NAME "Subscription Identifier" |
| 60 | #define MQTT_PROP_SESSION_EXPIRY_INTERVAL 0x11 |
| 61 | #define MQTT_PROP_SESSION_EXPIRY_INTERVAL_NAME "Session Expiry Interval" |
| 62 | #define MQTT_PROP_ASSIGNED_CLIENT_ID 0x12 |
| 63 | #define MQTT_PROP_ASSIGNED_CLIENT_ID_NAME "Assigned Client Identifier" |
| 64 | #define MQTT_PROP_SERVER_KEEP_ALIVE 0x13 |
| 65 | #define MQTT_PROP_SERVER_KEEP_ALIVE_NAME "Server Keep Alive" |
| 66 | #define MQTT_PROP_AUTH_METHOD 0x15 |
| 67 | #define MQTT_PROP_AUTH_METHOD_NAME "Authentication Method" |
| 68 | #define MQTT_PROP_AUTH_DATA 0x16 |
| 69 | #define MQTT_PROP_AUTH_DATA_NAME "Authentication Data" |
| 70 | #define MQTT_PROP_REQ_PROBLEM_INFO 0x17 |
| 71 | #define MQTT_PROP_REQ_PROBLEM_INFO_NAME "Request Problem Information" |
| 72 | #define MQTT_PROP_WILL_DELAY_INTERVAL 0x18 |
| 73 | #define MQTT_PROP_WIIL_DELAY_INTERVAL_NAME "Will Delay Interval" |
| 74 | #define MQTT_PROP_REQ_RESP_INFORMATION 0x19 |
| 75 | #define MQTT_PROP_REQ_RESP_INFORMATION_NAME "Request Response Information" |
| 76 | #define MQTT_PROP_RESP_INFORMATION 0x1A |
| 77 | #define MQTT_PROP_RESP_INFORMATION_NAME "Response Information" |
| 78 | #define MQTT_PROP_SERVER_REF 0x1C |
| 79 | #define MQTT_PROP_SERVER_REF_NAME "Server Reference" |
| 80 | #define MQTT_PROP_REASON_STR 0x1F |
| 81 | #define MQTT_PROP_REASON_STR_NAME "Reason String" |
| 82 | #define MQTT_PROP_RECEIVE_MAX 0x21 |
| 83 | #define MQTT_PROP_RECEIVE_MAX_NAME "Receive Maximum" |
| 84 | #define MQTT_PROP_TOPIC_ALIAS_MAX 0x22 |
| 85 | #define MQTT_PROP_TOPIC_ALIAS_MAX_NAME "Topic Alias Maximum" |
| 86 | #define MQTT_PROP_TOPIC_ALIAS 0x23 |
| 87 | #define MQTT_PROP_TOPIC_ALIAS_NAME "Topic Alias" |
| 88 | #define MQTT_PROP_MAX_QOS 0x24 |
| 89 | #define MQTT_PROP_MAX_QOS_NAME "Maximum QoS" |
| 90 | #define MQTT_PROP_RETAIN_AVAIL 0x25 |
| 91 | #define MQTT_PROP_RETAIN_AVAIL_NAME "Retain Available" |
| 92 | #define MQTT_PROP_USR 0x26 |
| 93 | #define MQTT_PROP_USR_NAME "User Property" |
| 94 | #define MQTT_PROP_MAX_PKT_SIZE 0x27 |
| 95 | #define MQTT_PROP_MAX_PKT_SIZE_NAME "Maximum Packet Size" |
| 96 | #define MQTT_PROP_WILDCARD_SUB_AVAIL 0x28 |
| 97 | #define MQTT_PROP_WILDCARD_SUB_AVAIL_NAME "Wildcard Subscription Available" |
| 98 | #define MQTT_PROP_SUB_ID_AVAIL 0x29 |
| 99 | #define MQTT_PROP_SUB_ID_AVAIL_NAME "Subscription Identifier Available" |
| 100 | #define MQTT_PROP_SHARED_SUB_AVAIL 0x2A |
| 101 | #define MQTT_PROP_SHARED_SUB_AVAIL_NAME "Shared Subscription Available" |
| 102 | |
| 103 | #endif /* MQTT_CONSTANTS_H */ |