Packet #350853

Database ID:	350853
Mesh Packet ID:	`0xfd231694` Utilizado para correlação entre gateways
Tempo:	2025-10-14 20:08:47 UTC
Do Node:	Marateca-GW-8 (teca)
Para o Node:	hdlopesrocha-8 (HLR8)
Successo:	Processado
Protocolo:	ROUTING_APP Port: 5

Gateway:	hdlopesrocha-8 (HLR8)
Canal:	LongFast
RSSI:	Unknown
SNR:	5.75 dBm
Info Hop:	0/2 hops Início: 2, Limite: 2

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:	2 bytes
Gateway:	!a8e5a2f3
Channel:	LongFast
Payload Type:	ROUTING_APP
Hop Count:	Unknown / 2

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a8e5a2f3` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (2 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`145529028` Source node ID	uint32
`to`	`2833621747` Target node ID	uint32
`decoded.portnum`	`5` ROUTING_APP	enum
`decoded.payload_length`	`2` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`2` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	`5.75` dB Signal quality at gateway	float
`rx_time`	`1760468926` 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`	`196` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1760468927.0496018` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

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

MQTT-Specific Fields

Gateway ID:	`!a8e5a2f3`
Zero Hop Policy:	Enabled Direct gateway connection
Signal Metrics:	SNR: 5.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	ROUTING_APP
Size:	2 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "error_reason": "NONE", "type": "protobuf", "portnum": "ROUTING_APP", "message_class": "Routing" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a8e5a2f3", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 145529028, "to": 2833621747, "id": 4246935188, "rx_time": 1760468926, "rx_snr": 5.75, "rx_rssi": 0, "hop_limit": 2, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 196, "tx_after": 0, "decoded": { "portnum": 5, "payload": "1800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "error_reason": "NONE", "type": "protobuf", "portnum": "ROUTING_APP", "message_class": "Routing" } } } }

Raw Packet Data (2 bytes)

1800

Hex Analysis:

Size:	2 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.

Pacote #350853 Successo

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