MQTT with keep_alive=0 (zero) causes invalid arguments on broker/server and the connection terminates.

[vstokesjr]

Pico W SDK: 1.4.0 IDE: CLion on Ubuntu 22.04 running on a PC: GCC: 11.2.0 (Ubuntu 11.2.0-19ubuntu1) MQTT broker/server: Mosquitto 2.0.15 running on Ubuntu 22.04.

Issue: MQTT with keep_alive=0 (zero) causes invalid arguments on broker/server and the connection terminates.

....
  /* Initialize and configure the client info structure */
  struct mqtt_connect_client_info_t clientInfo;
  clientInfo.client_id = MQTT_CLIENT_ID;
  clientInfo.client_user = MQTT_USER;
  clientInfo.client_pass = MQTT_USER_PASSWD;
  clientInfo.keep_alive = 0; <<<<<<<<<<<<< NOTE THIS !!!!!!!!!!!!!!!!!!!!!!!!!
  clientInfo.will_topic = NULL; // set to NULL if will is not to be used, will_msg, will_qos and will retain are then ignored
  clientInfo.will_msg = NULL;
  clientInfo.will_qos = 0;
  clientInfo.will_retain = 0;

  err = mqtt_client_connect(
    client,
    &brokerAddr,
    MQTT_PORT,
    mqttConnectionCallback,
    NULL,
    &clientInfo
  );
....

Generates the following log entries on the Mosquitto broker/server:

1666604114: New connection from 10.3.17.135:53231 on port 1883.
1666604114: New client connected from 10.3.17.135:53231 as picow (p2, c1, k0, u'test').
1666604114: Bad socket read/write on client picow: Invalid arguments provided.