Packet #4071255 Success

NODEINFO_APP packet from Brunch de 25 euros (🥑) to Alma Tracker (AGPS)

1
Total Receptions
1
Unique Gateways
3
Hop Count
85
Payload Bytes
Packet Information
Database ID: 4071255
Mesh Packet ID: 0x9cae6a21
Used for correlation across gateways
Timestamp: 2025-07-18 19:12:33 UTC
From Node: Brunch de 25 euros (🥑)
To Node: Alma Tracker (AGPS)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Alma Tracker (AGPS)
Channel: MediumSlow
RSSI: -53 dBm
SNR: 12.25 dBm
Hop Info: 3/3 hops
Start: 3, Limit: 0
Payload Data
Protocol: NODEINFO_APP
Size: 85 bytes
Decoded: Yes
Decoded Data:
Long Name:Brunch de 25 euros
Short Name:🥑
Node ID:!a0cbbc6c
MAC Address:MO2gy7xs
Hardware:HELTEC_WIRELESS_PAPER
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:85 bytes
Gateway:!1c7b9514
Channel:MediumSlow
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
+ 2 more...
Exposure Risks:
âš  Packet visible to MQTT subscribers
âš  Multi-hop path visible (3 hops)
+ 1 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !1c7b9514
Node ID format
channel_id MediumSlow
packet MeshPacket (85 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2697706604
Source node ID 		uint32
to 477861140
Target node ID 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 85 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 -53.0 dBm
Signal strength at gateway 		int32
rx_snr 12.25 dB
Signal quality at gateway 		float
rx_time 1752865953
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 164
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1752865953.909143
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
  • ✓ Custom channel: MediumSlow
  • ✓ Gateway node ID tracked
Exposure Risks:
  • âš  Packet visible to MQTT subscribers
  • âš  Multi-hop path visible (3 hops)
  • âš  RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !1c7b9514
Signal Metrics: RSSI: -53.0 dBm
SNR: 12.25 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NODEINFO_APP
Size:85 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "id": "!a0cbbc6c", "long_name": "Brunch de 25 euros", "short_name": "🥑", "macaddr": "MO2gy7xs", "hw_model": "HELTEC_WIRELESS_PAPER" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!1c7b9514", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2697706604, "to": 477861140, "id": 2628676129, "rx_time": 1752865953, "rx_snr": 12.25, "rx_rssi": -53, "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": 164, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921613063626263366312124272756e6368206465203235206575726f731a04f09fa591220630eda0cbbc6c283138014220066ef1acf68ebce436b5e7c1b91d2ee25436d312ab099d9f900bef4fcda7240e4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!a0cbbc6c", "long_name": "Brunch de 25 euros", "short_name": "🥑", "macaddr": "MO2gy7xs", "hw_model": "HELTEC_WIRELESS_PAPER", "role": "CLIENT_MUTE", "public_key": "Bm7xrPaOvOQ2tefBuR0u4lQ20xKrCZ2fkAvvT82nJA4=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (85 bytes)
0a0921613063626263366312124272756e6368206465203235206575726f731a04f09fa591220630eda0cbbc6c283138014220066ef1acf68ebce436b5e7c1b91d2ee25436d312ab099d9f900bef4fcda7240e4800
Hex Analysis:
Size:85 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
Alma Tracker (AGPS) Primary 0.000s
Reference 		-53.0 dBm 12.25 dB 3 MediumSlow 2025-07-18 19:12:33 Current
No other receptions found within ±2 seconds
1

Total Receptions

1

Unique Gateways