Packet #1942255

Packet Information

Database ID:	1942255
Mesh Packet ID:	`0x4f19f871` Used for correlation across gateways
Timestamp:	2025-06-26 21:06:11 UTC
From Node:	B1cm🌐📱(MQTT) (B1cm)
To Node:	Meshtastic f2ec (f2ec)
Success:	Processed
Protocol:	TEXT_MESSAGE_APP Port: 1

Gateway:	B1cm🌐📱(MQTT) (B1cm)
Channel:	PKI
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/3 hops Start: 3, Limit: 3

Payload Data

Protocol: TEXT_MESSAGE_APP

Size: 4 bytes

Decoded: Yes

Text Content:

Hola

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:	4 bytes
Gateway:	!a0cb0fd4
Channel:	PKI
Payload Type:	TEXT_MESSAGE_APP
Hop Count:	Unknown / 3

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ PKI encrypted packet
+ 5 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!a0cb0fd4` Node ID format
`channel_id`	`PKI`
`packet`	`MeshPacket` (4 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2697662420` Source node ID	uint32
`to`	`1128133356` Target node ID	uint32
`decoded.portnum`	`1` TEXT_MESSAGE_APP	enum
`decoded.payload_length`	`4` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`3` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1750971970` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	True Acknowledgment requested	bool
`priority`	`100` Packet priority level	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	True PKI encryption used	bool
`next_hop`	`236` Next hop node ID	uint32
`relay_node`	`212` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1750971971.1788728` 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)
✓ PKI encrypted packet
✓ Acknowledgment requested
✓ Targeted to specific node
✓ Custom channel: PKI
✓ Gateway node ID tracked
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Packet visible to MQTT subscribers

MQTT-Specific Fields

Pki encrypted:	`True`
Want ack:	`True`
Gateway ID:	`!a0cb0fd4`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!a0cb0fd4", "channel_id": "PKI", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2697662420, "to": 1128133356, "id": 1327102065, "rx_time": 1750971970, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 1, "priority": 100, "delayed": 0, "channel_index": null, "pki_encrypted": 1, "next_hop": 236, "relay_node": 212, "tx_after": 0, "decoded": { "portnum": 1, "payload": "486f6c61", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "text": "Hola", "type": "text_message", "portnum": "TEXT_MESSAGE_APP" } } } }

Raw Packet Data (4 bytes)

486f6c61

Hex Analysis:

Size:	4 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.

All Receptions

All gateways that received this packet
Correlation: Using Mesh Packet ID

Gateway	Time Offset	RSSI	SNR	Hops	Channel	Timestamp	Actions
B1cm🌐📱(MQTT) (B1cm) Primary	0.000s Reference	Unknown	Unknown	0	PKI	2025-06-26 21:06:11	Current
No other receptions found within ±2 seconds

1

Total Receptions

1

Unique Gateways

Packet #1942255 Success