Meshstream

A Go application that monitors the Meshtastic MQTT server and logs packets to the terminal.

Setup

1. Clone this repository
2. Install dependencies:

go mod tidy

Running

go run main.go

Decoding Meshtastic Packets

This project includes the Meshtastic protocol buffer definitions in the proto/ directory and a decoder for parsing MQTT packets. The application will automatically decode JSON messages and extract key information from binary messages.

Protocol Buffer Compilation

To regenerate the protocol buffer Go code:

make gen-proto

This will:

1. Install the required protoc-gen-go compiler plugin in a local bin/ directory
2. Generate Go code from the protocol buffer definitions
3. Place the generated code in the proto/generated/ directory

Packet Decoding

The application currently decodes packets in these formats:

1. JSON messages (from topics containing '/json/')

   • Extracts common fields like sender, receiver, and payload
   • Pretty-prints the JSON content

2. Binary messages (from topics containing '/binary/')

   • Shows basic topic information and a hex dump of the binary data

3. Text messages (from topics containing '/text/')

   • Displays the plain text content

The decoder is implemented in the decoder package.

MQTT Configuration

• Broker: mqtt.bayme.sh
• Username: meshdev
• Password: large4cats
• Topic prefix: msh/US/CA/Motherlode