1: <?php
 2: 
 3: /*
 4:  * The MIT License
 5:  *
 6:  * Copyright 2017 David Schoenbauer <dschoenbauer@gmail.com>.
 7:  *
 8:  * Permission is hereby granted, free of charge, to any person obtaining a copy
 9:  * of this software and associated documentation files (the "Software"), to deal
10:  * in the Software without restriction, including without limitation the rights
11:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12:  * copies of the Software, and to permit persons to whom the Software is
13:  * furnished to do so, subject to the following conditions:
14:  *
15:  * The above copyright notice and this permission notice shall be included in
16:  * all copies or substantial portions of the Software.
17:  *
18:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21:  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24:  * THE SOFTWARE.
25:  */
26: 
27: namespace DSchoenbauer\Exception\Http\ServerError;
28: 
29: /**
30:  * The server is currently unable to handle the request due to a temporary 
31:  * overload or scheduled maintenance, which will likely be alleviated after 
32:  * some delay.
33:  * 
34:  * The server MAY send a Retry-After header field1 to suggest an appropriate 
35:  * amount of time for the client to wait before retrying the request.
36:  * 
37:  * Note: The existence of the 503 status code does not imply that a server 
38:  * has to use it when becoming overloaded. Some servers might simply refuse the 
39:  * connection.
40:  * 
41:  * @link https://httpstatuses.com/503 Source
42:  *
43:  * @author David Schoenbauer <dschoenbauer@gmail.com>
44:  * @since 1.0.0
45:  */
46: class ServiceUnavailableException extends ServerErrorException {
47:     public function __construct($message = "") {
48:         parent::__construct($message, 503);
49:     }
50: }
51: