CoAP 2 MQTT Bridge

• aiocoap (Python)
• MQTT
• Telegraf
• InfluxDB
• Grafana

The CoAP server will relay all messaged received under the sensor/data endpoint.

Launch

# Need to be run every time you update the Python file
docker compose --profile tig build --no-cache

# Start with the TIG Stack
docker compose --profile tig up --detach

# Start only the CoAP & MQTT Server
docker compose --profile mqtt up --detach

docker exec -it iot-ws24-influxdb-1 influx auth list
docker exec -it iot-ws24-influxdb-1 influx telegrafs

Environment Variables

• COAP_BIND_NAME
• COAP_PORT
• MQTT_SERVER
• MQTT_PORT
• MQTT_USER
• MQTT_PASSWORD

CoAP Cheat Sheet

packet-beta
title CoAP Packet
0-1: "Ver"
2-3: "Type"
4-7: "Token length"
8-15: "Request/Response Code"
16-31: "Message ID"
32-95: "Token (0-8 bytes)"
96-127: "Options (if available)"
128-128: "1"
129-129: "1"
130-130: "1"
131-131: "1"
132-132: "1"
133-133: "1"
134-134: "1"
135-135: "1"
136-159: "Payload (if available)"

Loading

• GET: Code 0.01 (or 1 in hexadecimal).
• POST: Code 0.02 (or 2 in hexadecimal).
• PUT: Code 0.03 (or 3 in hexadecimal).
• DELETE: Code 0.04 (or 4 in hexadecimal).