text: #include <stdbool.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <mosquitto.h>
  
  static int run = -1;
  
  void on_connect(struct mosquitto *mosq, void *obj, int rc)
  {
  	if(rc){
  		exit(1);
  	}else{
  		mosquitto_disconnect(mosq);
  	}
  }
  
  void on_disconnect(struct mosquitto *mosq, void *obj, int rc)
  {
  	run = rc;
  }
  
  int main(int argc, char *argv[])
  {
  	int rc;
  	struct mosquitto *mosq;
  
  	int port = atoi(argv[1]);
  
  	mosquitto_lib_init();
  
  	mosq = mosquitto_new("01-con-discon-success", true, NULL);
  	if(mosq == NULL){
  		return 1;
  	}
  	mosquitto_connect_callback_set(mosq, on_connect);
  	mosquitto_disconnect_callback_set(mosq, on_disconnect);
  
  	rc = mosquitto_connect(mosq, "localhost", port, 60);
  
  	while(run == -1){
  		mosquitto_loop(mosq, -1, 1);
  	}
  
  	mosquitto_destroy(mosq);
  
  	mosquitto_lib_cleanup();
  	return run;
  }
  