{ ... }:

{
  services.mosquitto = {
    enable = true;
    listeners = [
      {
        port = 1883;
        settings = {
          ptotocol = "mqtt";
        };
      }
      {
        port = 8083;
        settings = {
          protocol = "websockets";
        };
      }
    ];
    settings = {
      allow_zero_length_clientid = true;
      autosave_interval = 1800;
      autosave_on_changes = true;
      connection_messages = true;
      allow_anonymous = true;
    };
    logDest = "stdout";
    logType = [
      "error"
      "warning"
      "notice"
      "information"
    ];
  };
}