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1 | <?php |
2 | /* | |
3 | +--------------------------------------------------------------------+ | |
06b69b18 | 4 | | CiviCRM version 4.5 | |
b5c0ad9a | 5 | +--------------------------------------------------------------------+ |
06b69b18 | 6 | | Copyright CiviCRM LLC (c) 2004-2014 | |
b5c0ad9a TO |
7 | +--------------------------------------------------------------------+ |
8 | | This file is a part of CiviCRM. | | |
9 | | | | |
10 | | CiviCRM is free software; you can copy, modify, and distribute it | | |
11 | | under the terms of the GNU Affero General Public License | | |
12 | | Version 3, 19 November 2007 and the CiviCRM Licensing Exception. | | |
13 | | | | |
14 | | CiviCRM is distributed in the hope that it will be useful, but | | |
15 | | WITHOUT ANY WARRANTY; without even the implied warranty of | | |
16 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | | |
17 | | See the GNU Affero General Public License for more details. | | |
18 | | | | |
19 | | You should have received a copy of the GNU Affero General Public | | |
20 | | License and the CiviCRM Licensing Exception along | | |
21 | | with this program; if not, contact CiviCRM LLC | | |
22 | | at info[AT]civicrm[DOT]org. If you have questions about the | | |
23 | | GNU Affero General Public License or the licensing of CiviCRM, | | |
24 | | see the CiviCRM license FAQ at http://civicrm.org/licensing | | |
25 | +--------------------------------------------------------------------+ | |
26 | */ | |
27 | ||
28 | /** | |
29 | * | |
30 | * @package CRM | |
06b69b18 | 31 | * @copyright CiviCRM LLC (c) 2004-2014 |
b5c0ad9a TO |
32 | * $Id: $ |
33 | * | |
34 | */ | |
35 | ||
36 | /** | |
37 | * Simple static helpers for network operations | |
38 | */ | |
39 | class CRM_Utils_Network { | |
40 | /** | |
41 | * Try connecting to a TCP service; if it fails, retry. Repeat until serverStartupTimeOut elapses. | |
42 | * | |
f4aaa82a EM |
43 | * @param $host |
44 | * @param $port | |
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45 | * @param int $serverStartupTimeOut seconds |
46 | * @param float $interval seconds to wait in between pollings | |
f4aaa82a | 47 | * |
b5c0ad9a TO |
48 | * @return bool TRUE if service is online |
49 | */ | |
50 | public static function waitForServiceStartup($host, $port, $serverStartupTimeOut, $interval = 0.333) { | |
51 | $start = time(); | |
52 | $end = $start + $serverStartupTimeOut; | |
53 | $found = FALSE; | |
54 | $interval_usec = (int) 1000000 * $interval; | |
55 | ||
56 | while (!$found && $end >= time()) { | |
57 | $found = self::checkService($host, $port, $end - time()); | |
58 | if ($found) { | |
59 | return TRUE; | |
60 | } | |
61 | usleep($interval_usec); | |
62 | } | |
63 | return FALSE; | |
64 | } | |
65 | ||
66 | /** | |
67 | * Check whether a TCP service is available on $host and $port | |
68 | */ | |
69 | public static function checkService($host, $port, $serverConnectionTimeOut) { | |
70 | $old_error_reporting = error_reporting(); | |
71 | error_reporting($old_error_reporting & ~E_WARNING); | |
72 | try { | |
73 | $fh = fsockopen($host, $port, $errno, $errstr, $serverConnectionTimeOut); | |
74 | if ($fh) { | |
75 | fclose($fh); | |
76 | error_reporting($old_error_reporting); | |
77 | return TRUE; | |
78 | } | |
79 | } catch (Exception $e) { | |
80 | } | |
81 | error_reporting($old_error_reporting); | |
82 | return FALSE; | |
83 | } | |
232624b1 | 84 | } |