Packet #342387

Database ID:	342387
Mesh Packet ID:	`0x1bbcad5a` Used for correlation across gateways
Timestamp:	2026-01-15 08:29:17 UTC
From Node:	29line2d74 (2d74)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	q00_Repeater (q00)
Channel:	LongFast
RSSI:	-137 dBm
SNR:	-13.5 dBm
Hop Info:	4/7 hops Start: 7, Limit: 3

Long Name:	29line2d74
Short Name:	2d74
Node ID:	!1be02d74
MAC Address:	z2Yb4C10
Hardware:	HELTEC_MESH_POCKET

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:	77 bytes
Gateway:	!8488730c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!8488730c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (77 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`467676532` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`77` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-137.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.50` dB Signal quality at gateway	float
`rx_time`	`1768454957` 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`	`28` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1768454957.9450119` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

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

Exposure Level: Broadcast

Privacy Features:

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

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!8488730c`
Signal Metrics:	RSSI: -137.0 dBm SNR: -13.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	77 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!1be02d74", "long_name": "29line2d74", "short_name": "2d74", "macaddr": "z2Yb4C10", "hw_model": "HELTEC_MESH_POCKET" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!8488730c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 467676532, "to": 4294967295, "id": 465349978, "rx_time": 1768454957, "rx_snr": -13.5, "rx_rssi": -137, "hop_limit": 3, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 28, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213162653032643734120a32396c696e65326437341a04326437342206cf661be02d74285e380142202254504cb784951db9cb701b0294b67c4e65230b8aeeb6c7ed8f8e4d3f1aec084800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!1be02d74", "long_name": "29line2d74", "short_name": "2d74", "macaddr": "z2Yb4C10", "hw_model": "HELTEC_MESH_POCKET", "role": "CLIENT_MUTE", "public_key": "IlRQTLeElR25y3AbApS2fE5lIwuK7rbH7Y+OTT8a7Ag=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (77 bytes)

0a09213162653032643734120a32396c696e65326437341a04326437342206cf661be02d74285e380142202254504cb784951db9cb701b0294b67c4e65230b8aeeb6c7ed8f8e4d3f1aec084800

Hex Analysis:

Size:	77 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 #342387 Success

Packet Information

Payload Data

Decoded Data: