File Core/Schema/Error/HeaderMismatchError.php

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\Core\Schema\Error;
15:
16:	use Nexus\Assert\Assert;
17:	use Nexus\Mcp\Core\Schema\Enum\ProtocolErrorCode;
18:	use Nexus\Mcp\Core\Schema\Error;
19:
20:	/**
21:	* Returned when a server rejects a request because the values in the HTTP headers do not match the
22:	* corresponding values in the request body, or because required headers are missing or malformed. For
23:	* HTTP, the response status code MUST be `400 Bad Request`.
24:	*
25:	* @extends Error<array{code: -32020, message: non-empty-string, data?: mixed}>
26:	*
27:	* @see https://modelcontextprotocol.io/specification/draft/schema#headermismatcherror
28:	*/
29:	final readonly class HeaderMismatchError extends Error
30:	{
31:	public const string DEFAULT_MESSAGE = 'Header mismatch';
32:
33:	public function __construct(string $message = self::DEFAULT_MESSAGE)
34:	{
35:	parent::__construct(code: ProtocolErrorCode::HeaderMismatch, message: $message);
36:	}
37:
38:	#[\Override]
39:	public static function fromArray(array $data): static
40:	{
41:	$message = $data['message'] ?? self::DEFAULT_MESSAGE;
42:	Assert::that($message)->isString('error "message" must be a string, {type} given.');
43:
44:	return new self(message: $message);
45:	}
46:
47:	#[\Override]
48:	public function toArray(): array
49:	{
50:	return [
51:	'code' => ProtocolErrorCode::HeaderMismatch->value,
52:	'message' => $this->message,
53:	];
54:	}
55:	}
56:

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