Packet #3708094

Database ID:	3708094
Mesh Packet ID:	`0x45ab2eae` Used for correlation across gateways
Timestamp:	2025-07-14 09:28:52 UTC
From Node:	PDRC(MQTT) (PDRC)
To Node:	PDRC_📡☀️🌡️📶 (DRC1)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EA7KEL (7KEL)
Channel:	LongFast
RSSI:	-118 dBm
SNR:	-18.75 dBm
Hop Info:	3/3 hops Start: 3, Limit: 0

Long Name:	PDRC(MQTT)
Short Name:	PDRC
Node ID:	!ea8eee34
MAC Address:	jL/qju40
Hardware:	SEEED_XIAO_S3

Raw Packet Analysis

Complete field breakdown and MQTT privacy/exposure analysis

Packet Structure

MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)

Total Size:	75 bytes
Gateway:	!433d56d0
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	3 / 3

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!433d56d0` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (75 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3935235636` Source node ID	uint32
`to`	`592018505` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`75` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-118.0` dBm Signal strength at gateway	int32
`rx_snr`	`-18.75` dB Signal quality at gateway	float
`rx_time`	`1752485329` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	Not set	uint32
`tx_after`	Not set	uint32
`timestamp`	`1752485332.3363028` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
✓ Gateway node ID tracked

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!433d56d0`
Signal Metrics:	RSSI: -118.0 dBm SNR: -18.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	75 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!ea8eee34", "long_name": "PDRC(MQTT)", "short_name": "PDRC", "macaddr": "jL/qju40", "hw_model": "SEEED_XIAO_S3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!433d56d0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3935235636, "to": 592018505, "id": 1168846510, "rx_time": 1752485329, "rx_snr": -18.75, "rx_rssi": -118, "hop_limit": 0, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216561386565653334120a50445243284d515454291a045044524322068cbfea8eee3428514220672cb641074ef5d2d04a2762687e7d67bff828a3ffca0fd14a44c59078968d214800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!ea8eee34", "long_name": "PDRC(MQTT)", "short_name": "PDRC", "macaddr": "jL/qju40", "hw_model": "SEEED_XIAO_S3", "public_key": "Zyy2QQdO9dLQSidiaH59Z7/4KKP/yg/RSkTFkHiWjSE=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (75 bytes)

0a09216561386565653334120a50445243284d515454291a045044524322068cbfea8eee3428514220672cb641074ef5d2d04a2762687e7d67bff828a3ffca0fd14a44c59078968d214800

Hex Analysis:

Size:	75 bytes
Format:	Protobuf (Protocol Buffers)
Encoding:	Binary with varint and length-delimited fields

This is the raw protobuf-encoded payload as received from MQTT. The structure follows the Meshtastic protobuf schema definitions.

Packet #3708094 Success

Packet Information

Payload Data

Decoded Data: