Implement PSR-7

[mkusher]

I think it would be useful to implement PSR-7 Request\Response. Is it possible?

[WyriHaximus]

I'm currently going over PSR-7 to see how and if we can implement it.

[franzliedke]

👍

[romainPrignon]

👍

[andig]

PSR7 would be absolutely great if it would allow us to skip some of the complex bridging logic e.g. between React and Symfony Request/Responses.

[arunpoudel]

It would be a great thing to have, but they kind of derped on this one, I don't think there is a way around it using async features.

[franzliedke]

@arunpoudel Can you expand on the derp? Are you referring to the immutable structures?

[WyriHaximus]

@franzliedke I think @arunpoudel is referring to the streams which are going to be an issue to fully and properly implement them to spec. My strategy right now is to get around reading HTTP RFC's for 1.0/1.1/2.0 and PSR-7 to get a good and global plan for all of those. But PSR7 might come sooner then the rest.

[letharion]

I came to this issue thinking precisely what @andig wrote above. Lower the limit to interoperability between Symfony and React would be awesome. (And I guess that's the precise idea with PSR-7)

[cboden]

Thinking out loud:

$http->on('request', function ($conn, RequestInterface $request, ResponseInterface $response) {
    $response = $response->withStatus(200)->withHeader('foo', 'bar');

    $conn->writeHead($response);
});

We pass a connection object that has today's React Response methods but it accepts PSR-7 objects for its calls. We'd have to look into see if we can async stream a body with their StreamInterface as well. $response would be a bare or minimalist initialized response for the user to build up.

[WyriHaximus]

@cboden working on PSR7 to ReactPHP streams and vice versa for my guzzle adapters anyway. It is possible but it isn't the prettiest thing around. Will ping you when I have them done.

[andig]

@cboden, @WyriHaximus I've successfully used Guzzle's StreamWrapper to convert PSR7 or older interfaces into native PHP streams (for use with a JsonStreamingParser). This way I'm already able to work with Symfony's StreamedResponse.

To finish implementation of https://github.com/php-pm/php-pm-httpkernel/blob/master/Bridges/HttpKernel.php#L155 I'd be interested in passing any kind of async object stream etc back into ReactPHP. If I can help/ test please let me know.

[ephrin]

@WyriHaximus what is the progress of psr7 impl?