...
p_conn
Pointer to the current HTTPc MQTTc Connection.
type
Parameter type:
...
MQTTc_PARAM_TYPE_CALLBACK_ON_DISCONNECT_CMPL On disconnect cmpl callback.
MQTTc_PARAM_TYPE_CALLBACK_ON_ERR_CALLBACK On err callback.
MQTTc_PARAM_TYPE_CALLBACK_ON_PUBLISH_RX On publish rx'd callback.
...