StreamWrapper streams are always seekable

[Deltachaos]

PHP version: 8.1.11

Description

Resources created by StreamWrapper::getResource are always seekable, even if the underlying Stream object, is not.

How to reproduce

use Psr\Http\Message\StreamInterface;
use GuzzleHttp\Psr7\StreamWrapper;

class TestStream implements StreamInterface
{
    public function __toString()
    {
        return $this->getContents();
    }

    public function close()
    {
    }

    public function detach()
    {
        return null;
    }

    public function getSize()
    {
        return 0;
    }

    public function tell()
    {
        return 0;
    }

    public function eof()
    {
        return true;
    }

    public function isSeekable()
    {
        return false;
    }

    public function seek($offset, $whence = SEEK_SET)
    {
        return false;
    }

    public function rewind()
    {
        return false;
    }

    public function isWritable()
    {
        return false;
    }

    public function write($string)
    {
    }

    public function isReadable()
    {
        return true;
    }

    public function read($length)
    {
        return '';
    }

    public function getContents()
    {
        return '';
    }

    public function getMetadata($key = null)
    {
        return null;
    }
}

$stream = new TestStream();
$metadata = stream_get_meta_data(StreamWrapper::getResource($stream));

assert($metadata['seekable'] == $stream->isSeekable(), "Stream is not seekable");

Possible Solution

Throw an exception in StreamWrapper::getResource if non seekable Stream objects are passed as an argument.

Additional context

As far as my research went, custom stream wrappers are currently always treated as seekable (which does not make any sense IMHO). So therefore this can only be implemented in Guzzle as soon as support for none seekable custom stream wrappers is implemented in PHP.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed after 2 weeks if no further activity occurs. Thank you for your contributions.