Function monitor_printer

backend/ipp.c:2544–2833

 */

static void *				/* O - Thread exit code */
monitor_printer(
    _cups_monitor_t *monitor)		/* I - Monitoring data */
{
  http_t	*http;			/* Connection to printer */
  ipp_t		*request,		/* IPP request */
		*response;		/* IPP response */
  ipp_attribute_t *attr;		/* Attribute in response */
  int		delay,			/* Current delay */
		prev_delay;		/* Previous delay */
  ipp_op_t	job_op;			/* Operation to use */
  int		job_id;			/* Job ID */
  const char	*job_name;		/* Job name */
  ipp_jstate_t	job_state;		/* Job state */
  const char	*job_user;		/* Job originating user name */
  int		password_tries = 0;	/* Password tries */


 /*
  * Make a copy of the printer connection...
  */

  http = httpConnect2(monitor->hostname, monitor->port, NULL, AF_UNSPEC,
                      monitor->encryption, 1, 0, NULL);
  httpSetTimeout(http, 30.0, timeout_cb, NULL);
  if (device_username[0])
    cupsSetUser(device_username);

  cupsSetPasswordCB2((cups_password_cb2_t)password_cb, &password_tries);

 /*
  * Loop until the job is canceled, aborted, or completed.
  */

  delay = _cupsNextDelay(0, &prev_delay);

  monitor->job_reasons = 0;

  while (monitor->job_state < IPP_JSTATE_CANCELED && !job_canceled)
  {
   /*
    * Reconnect to the printer as needed...
    */

    if (httpGetFd(http) < 0)
      httpReconnect2(http, 30000, NULL);

    if (httpGetFd(http) >= 0)
    {
     /*
      * Connected, so check on the printer state...
      */

      monitor->printer_state = check_printer_state(http, monitor->uri,
                                                   monitor->resource,
						   monitor->user,
						   monitor->version);
      if (cupsLastError() <= IPP_STATUS_OK_CONFLICTING)