In a legacy TYPO3 plugin, what is the process for replacing the deprecated HttpUtility::redirect() with PSR-7 response?

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The process for replacing the deprecated HttpUtility::redirect() with PSR-7 response in a legacy TYPO3 plugin is as follows:

1. Ensure that the plugin is using TYPO3 version 9 or higher, which supports the PSR-7 standard.

2. Create a new class for the PSR-7 response using the following code:

use Psr\Http\Message\ResponseInterface; use TYPO3\CMS\Core\Http\Response; use TYPO3\CMS\Core\Utility\HttpUtility;

class Psr7Response implements ResponseInterface { protected $headers = []; protected $statusCode = 200; protected $reasonPhrase = '';

public function __construct($statusCode = 200, array $headers = [])
{
    $this->setStatusCode($statusCode);
    $this->headers = $headers;
}

public function getStatusCode()
{
    return $this->statusCode;
}

public function setStatusCode($code, $reasonPhrase = null)
{
    $this->statusCode = (int) $code;
    if ($reasonPhrase === null) {
        $reasonPhrase = isset(Response::$statusTexts[$this->statusCode]) ? Response::$statusTexts[$this->statusCode] : '';
    }
    $this->reasonPhrase = $reasonPhrase;
    return $this;
}

public function getReasonPhrase()
{
    return $this->reasonPhrase;
}

public function getHeaders()
{
    return $this->headers;
}

public function getHeader($name)
{
    return isset($this->headers[$name]) ? $this->headers[$name] : null;
}

public function withHeader($name, $value)
{
    $clone = clone $this;
    $clone->headers[$name] = [$value];
    return $clone;
}

public function withAddedHeader($name, $value)
{
    $clone = clone $this;
    if (isset($clone->headers[$name])) {
        $clone->headers[$name][] = $value;
    } else {
        $clone->headers[$name] = [$value];
    }
    return $clone;
}

public function withoutHeader($name)
{
    $clone = clone $this;
    unset($clone->headers[$name]);
    return $clone;
}

public function hasHeader($name)
{
    return isset($this->headers[$name]);
}

public function getBody()
{
    return null;
}

public function withBody(StreamInterface $body)
{
    $clone = clone $this;
    return $clone;
}

public function __toString()
{
    HttpUtility::redirect();
}

}

1. In the controller method, replace the old HttpUtility::redirect() with the new PSR-7 response code. Use the following code as an example:

use Psr\Http\Message\ResponseInterface; use Psr\Http\Message\ServerRequestInterface;

class ExampleController { public function handleRequest(ServerRequestInterface $request): ResponseInterface { $url = 'http://www.example.com';

    $response = new Psr7Response(301, ['Location' => $url]);
    return $response;
}

}

1. Test the plugin to ensure that the PSR-7 response is working as expected, and make any necessary adjustments to ensure compatibility with the application.