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en:software:mqtt [2026/08/06 18:22] – Create MQTT server page fasteineren:software:mqtt [2026/08/06 18:38] (current) – clarify: topic uses the node ID from the self-service portal fasteiner
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   * **Publishing requires no username or password.**   * **Publishing requires no username or password.**
   * Every node identifies itself by its **node name** — by default the Ethernet MAC address of the ESP32 (e.g. ''aabbccddeeff''). We are happy to replace it with a friendly name in our database; see [[en:node_registration|Node Registration]].   * Every node identifies itself by its **node name** — by default the Ethernet MAC address of the ESP32 (e.g. ''aabbccddeeff''). We are happy to replace it with a friendly name in our database; see [[en:node_registration|Node Registration]].
 +
 +===== Topics =====
 +
 +Each node publishes under ''its/nodeXXX/...'', where ''nodeXXX'' is the **node ID** — currently simply an ascending number. You can find your node's ID in the self-service portal (see [[en:node_registration|Node Registration]]):
 +
 +^ Topic ^ Content ^
 +| ''its/nodeXXX/packet/json'' | received C-ITS packets as JSON |
 +| ''its/nodeXXX/stats'' | node statistics / telemetry |
 +
 +To subscribe to **all** messages of a node, the wildcard ''its/nodeXXX/#'' should work as well by now.
  
 ===== Subscribing to your node ===== ===== Subscribing to your node =====
en/software/mqtt.1786033374.txt.gz · Last modified: by fasteiner