giving client-error-not-found message on trying to pause printer

[akbar]

Hi,

I am trying to pause printer once the current job is arrived,I am failing as my code displaying client-error-not-found message in the console,

My code is below,what I am doing wrong,please give me some suggestion.




case IPP_JOB_PROCESSING:

		if (jobId) //job_cancelled &&


		/*
		* disable a destination...
		*/


		if (http == NULL)
		http = httpConnectEncrypt(cupsServer(), ippPort(), cupsEncryption());

		if (http == NULL)
		{
		_cupsLangPrintf(stderr,	_("%s: Unable to connect to server: %s\n"),	command, strerror(errno));
					//return (1);
		}

				/*
				 * Build an IPP request, which requires the following
				 * attributes:
				 *
				 *    attributes-charset
				 *    attributes-natural-language
				 *    printer-uri
				 *    printer-state-message [optional]
				 */

		request = ippNewRequest(IPP_PAUSE_PRINTER);

		httpAssembleURIf(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL,	 "localhost", 0, "/printers/%s", argv[i]);
		ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);

		ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME "requesting-user-name", NULL, cupsUser());

		if (reason != NULL)
		ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_TEXT,
 "printer-state-message", NULL, reason);

				/*
				 * Do the request and get back a response...
				 */

	if ((response = cupsDoRequest(http, request, "/admin/")) != NULL)
				{
	if (response->request.status.status_code > IPP_OK_CONFLICT)
	{_cupsLangPrintf(stderr,							_("%s: Operation failed: %s\n"),							command, ippErrorString(cupsLastError()));
						//return (1);
				}

				ippDelete(response);
				}
				else
				{
					_cupsLangPrintf(stderr, "%s: %s\n", command, cupsLastErrorString());
					//return (1);
				}

				break;