1: <?php
2:
3: declare(strict_types=1);
4:
5: /**
6: * This file is part of the Nexus MCP SDK package.
7: *
8: * (c) 2026 John Paul E. Balandan, CPA <paulbalandan@gmail.com>
9: *
10: * For the full copyright and license information, please view
11: * the LICENSE file that was distributed with this source code.
12: */
13:
14: namespace Nexus\Mcp\Client\Exception;
15:
16: use Nexus\Mcp\Core\Exception\McpExceptionInterface;
17:
18: /**
19: * Thrown when supplied client credentials belong to an authorization server other than the one the protected
20: * resource now names.
21: *
22: * @see https://modelcontextprotocol.io/specification/2026-07-28/basic/authorization/client-registration#authorization-server-binding
23: */
24: final class AuthorizationServerMismatchException extends \RuntimeException implements McpExceptionInterface
25: {
26: public function __construct(string $registeredIssuer, string $currentIssuer)
27: {
28: parent::__construct(\sprintf(
29: 'The supplied client credentials were registered with "%s" but the protected resource now names "%s", and credentials are not portable between authorization servers.',
30: $registeredIssuer,
31: $currentIssuer,
32: ));
33: }
34: }
35: