MQTT HTTP Bridge

This script creates an HTTP server that acts as a bridge between HTTP requests and MQTT messages. It allows you to publish MQTT messages by sending HTTP GET or POST requests with the desired topic and payload.

Prerequisites

Before running the script, make sure you have the following prerequisites installed:

• Python 3.x
• Paho MQTT library (paho-mqtt)

Installation

1. Clone the repository or download the script file.

2. Install the required dependencies by running the following command:

   pip install paho-mqtt

Configuration

The script uses environment variables for configuration. You can set the following environment variables or use the default values:

• MQTT_BROKER: MQTT broker hostname or IP address. Default: localhost
• MQTT_PORT: MQTT broker port. Default: 1883
• TOPIC_PREFIX: Prefix to be added to the MQTT topic. Default: http2mqtt/
• MQTT_CLIENT_ID: MQTT client ID. Default: localhost
• MQTT_USERNAME: MQTT username. Default: username
• MQTT_PASSWORD: MQTT password. Default: password
• MQTT_RETAIN: MQTT retain flag (0 or 1). Default: 1
• MQTT_QOS: MQTT quality of service level (0, 1, or 2). Default: 1
• HTTP_PORT: HTTP server port. Default: 8080
• HTTP_PAYLOAD_HEADER: HTTP request header field to specify the payload. Default: x-payload
• HTTP_IP_ADDRESS: IP address for the HTTP server to bind to. Default: 0.0.0.0

Usage

To start the MQTT HTTP bridge, run the following command:

python http2mqtt.py

The HTTP server will start listening on the specified IP address and port. You can access the web interface by opening a web browser and navigating to http://<IP_ADDRESS>:<HTTP_PORT>. The default IP address is 0.0.0.0 (all interfaces) and the default port is 8080.

The web interface allows you to publish MQTT messages by submitting a form with the desired topic, payload, QoS, and retain settings.

License

This script is licensed under the MIT License.

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