Packet #1974966

Database ID:	1974966
Mesh Packet ID:	`0xbd37663e` Used for correlation across gateways
Timestamp:	2025-06-27 04:12:37 UTC
From Node:	CV-Oriol-CLM-8 📱 (CVO1)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	CV-Oriol-GW-8 📡 (CVO2)
Channel:	LongFast
RSSI:	-36 dBm
SNR:	5.75 dBm
Hop Info:	0/4 hops Start: 4, Limit: 4

Long Name:	CV-Oriol-CLM-8 📱
Short Name:	CVO1
Node ID:	!305d8768
MAC Address:	2iswXYdo
Hardware:	T_ECHO

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:	84 bytes
Gateway:	!bc32b3b4
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	Unknown / 4

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!bc32b3b4` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (84 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`811435880` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`84` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-36.0` dBm Signal strength at gateway	int32
`rx_snr`	`5.75` dB Signal quality at gateway	float
`rx_time`	`1750997556` 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`	`104` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1750997557.1363082` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!bc32b3b4`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	RSSI: -36.0 dBm SNR: 5.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	84 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!305d8768", "long_name": "CV-Oriol-CLM-8 📱", "short_name": "CVO1", "macaddr": "2iswXYdo", "hw_model": "T_ECHO" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!bc32b3b4", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 811435880, "to": 4294967295, "id": 3174524478, "rx_time": 1750997556, "rx_snr": 5.75, "rx_rssi": -36, "hop_limit": 4, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 104, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213330356438373638121343562d4f72696f6c2d434c4d2d3820f09f93b11a0443564f312206da2b305d876828073801422046f9a4a0fc91f16f1708905fbd85291ad33691d729d050039c5e2e3c656a8705", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!305d8768", "long_name": "CV-Oriol-CLM-8 📱", "short_name": "CVO1", "macaddr": "2iswXYdo", "hw_model": "T_ECHO", "role": "CLIENT_MUTE", "public_key": "RvmkoPyR8W8XCJBfvYUpGtM2kdcp0FADnF4uPGVqhwU=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (84 bytes)

0a09213330356438373638121343562d4f72696f6c2d434c4d2d3820f09f93b11a0443564f312206da2b305d876828073801422046f9a4a0fc91f16f1708905fbd85291ad33691d729d050039c5e2e3c656a8705

Hex Analysis:

Size:	84 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 #1974966 Success

Packet Information

Payload Data

Decoded Data: