Converting a non seekable stream to a string

[mapogolions]

I looked at the source code of various Stream class implementations. In particular, the __toString method.

• guzzlehttp/psr7
• zendframework/zend-diactoros
• nyholm/psr7

I noticed inconsistent behavior when working with non-seekable resources. For instance, a simple pipe - popen('echo 12', 'r').

$fd = popen('echo 12', 'r');
$stream = new Stream($fd);
(string) $stream; // implementation dependent

zend-diactoros && nyholm/psr7
They try to rewind a pipe according to standart, but ignore seek operation and return content, because a pipe is non-seekable.
guzzlehttp/psr7 && slim/psr7
They try to rewind a stream then as result get RuntimeException and return the empty string.
In my opinion, it will be more logical to use the first strategy. What do you thing about it?

[mapogolions]

I apologize, I will try to return to this problem later. At the moment, it requires too many changes to several repositories.