Display Filter Reference: MQ Telemetry Transport Protocol
Protocol field name: mqtt
Versions: 1.12.0 to 4.4.1
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| Field name | Description | Type | Versions |
|---|---|---|---|
| mqtt | Reason Code | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | Client ID | Character string | 1.12.0 to 4.4.1 |
| mqtt | Client ID Length | Unsigned integer (16 bits) | 2.4.0 to 4.4.1 |
| mqtt | Acknowledge Flags | Unsigned integer (8 bits) | 2.4.0 to 4.4.1 |
| mqtt | Reserved | Boolean | 2.4.0 to 4.4.1 |
| mqtt | Session Present | Boolean | 2.4.0 to 4.4.1 |
| mqtt | Return Code | Unsigned integer (8 bits) | 1.12.0 to 4.4.1 |
| mqtt | Clean Session Flag | Boolean | 1.12.0 to 4.4.1 |
| mqtt | Password Flag | Boolean | 1.12.0 to 4.4.1 |
| mqtt | QoS Level | Unsigned integer (8 bits) | 1.12.0 to 4.4.1 |
| mqtt | (Reserved) | Boolean | 1.12.0 to 4.4.1 |
| mqtt | Will Retain | Boolean | 1.12.0 to 4.4.1 |
| mqtt | User Name Flag | Boolean | 1.12.0 to 4.4.1 |
| mqtt | Will Flag | Boolean | 1.12.0 to 4.4.1 |
| mqtt | Connect Flags | Unsigned integer (8 bits) | 1.12.0 to 4.4.1 |
| mqtt | Reason Code | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | Reason Code | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | DUP Flag | Boolean | 1.12.0 to 4.4.1 |
| mqtt | Reserved | Unsigned integer (8 bits) | 2.4.3 to 4.4.1 |
| mqtt | Header Flags | Unsigned integer (8 bits) | 1.12.0 to 4.4.1 |
| mqtt | Length cannot be 0 | Label | 3.4.0 to 4.4.1 |
| mqtt | Keep Alive | Unsigned integer (16 bits) | 1.12.0 to 4.4.1 |
| mqtt | Msg Len | Unsigned integer (64 bits) | 1.12.0 to 4.4.1 |
| mqtt | Message | Byte sequence | 1.12.0 to 4.4.1 |
| mqtt | Message decoded as | Character string | 2.6.0 to 4.4.1 |
| mqtt | Message | Character string | 3.2.0 to 4.4.1 |
| mqtt | Message Identifier | Unsigned integer (16 bits) | 1.12.0 to 4.4.1 |
| mqtt | Message Type | Unsigned integer (8 bits) | 1.12.0 to 4.4.1 |
| mqtt | Password | Character string | 1.12.0 to 4.4.1 |
| mqtt | Password Length | Unsigned integer (16 bits) | 2.4.0 to 4.4.1 |
| mqtt | Key | Character string | 2.6.0 to 4.4.1 |
| mqtt | Key Length | Unsigned integer (32 bits) | 2.6.0 to 4.4.1 |
| mqtt | QoS | Unsigned integer (8 bits) | 2.6.0 to 3.2.18 |
| mqtt | Value | Unsigned integer (32 bits) | 2.6.0 to 4.4.1 |
| mqtt | Value | Character string | 2.6.0 to 4.4.1 |
| mqtt | Length | Unsigned integer (32 bits) | 2.6.0 to 4.4.1 |
| mqtt | Unknown Property | Character string | 2.6.0 to 4.4.1 |
| mqtt | Value | Character string | 2.6.0 to 4.4.1 |
| mqtt | Value Length | Unsigned integer (32 bits) | 2.6.0 to 4.4.1 |
| mqtt | Properties | Label | 2.6.0 to 4.4.1 |
| mqtt | Content Type | Character string | 3.4.0 to 4.4.1 |
| mqtt | QoS | Unsigned integer (8 bits) | 3.4.0 to 4.4.1 |
| mqtt | Topic Alias | Unsigned integer (16 bits) | 3.4.0 to 4.4.1 |
| mqtt | ID | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | Total Length | Unsigned integer (64 bits) | 2.6.0 to 4.4.1 |
| mqtt | Protocol Name Length | Unsigned integer (16 bits) | 2.4.0 to 4.4.1 |
| mqtt | Protocol Name | Character string | 1.12.0 to 4.4.1 |
| mqtt | Reason Code | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | Reason Code | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | Reason Code | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | Reason Code | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | QoS Level | Unsigned integer (8 bits) | 1.12.0 to 4.4.1 |
| mqtt | Retain | Boolean | 1.12.0 to 4.4.1 |
| mqtt | Reserved | Unsigned integer (8 bits) | 2.4.3 to 4.4.1 |
| mqtt | Requested QoS | Unsigned integer (8 bits) | 2.4.0 to 4.4.1 |
| mqtt | Granted Qos | Unsigned integer (8 bits) | 1.12.0 to 2.2.17 |
| mqtt | Granted QoS | Unsigned integer (8 bits) | 2.4.0 to 4.4.1 |
| mqtt | Reason Code | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | Subscription Options | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | No Local | Boolean | 2.6.0 to 4.4.1 |
| mqtt | QoS | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | Retain As Published | Boolean | 2.6.0 to 4.4.1 |
| mqtt | Reserved | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | Retain Handling | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | Topic | Character string | 1.12.0 to 4.4.1 |
| mqtt | Topic Length | Unsigned integer (16 bits) | 2.4.0 to 4.4.1 |
| mqtt | Unknown topic alias | Label | 3.4.0 to 4.4.1 |
| mqtt | Unknown version (missing the CONNECT packet?) | Label | 3.4.0 to 4.4.1 |
| mqtt | Reason Code | Unsigned integer (8 bits) | 2.6.0 to 4.4.1 |
| mqtt | User Name | Character string | 1.12.0 to 4.4.1 |
| mqtt | User Name Length | Unsigned integer (16 bits) | 2.4.0 to 4.4.1 |
| mqtt | Version | Unsigned integer (8 bits) | 1.12.0 to 4.4.1 |
| mqtt | Will Properties | Label | 3.0.0 to 4.4.1 |
| mqtt | Will Message | Byte sequence | 1.12.0 to 4.4.1 |
| mqtt | Will Message Length | Unsigned integer (16 bits) | 2.4.0 to 4.4.1 |
| mqtt | Will Message | Character string | 3.2.0 to 4.4.1 |
| mqtt | Will Topic | Character string | 1.12.0 to 4.4.1 |
| mqtt | Will Topic Length | Unsigned integer (16 bits) | 2.4.0 to 4.4.1 |