How to read the response effective URL in Guzzle ~

问题:

I've been searching for about 2 hours and I can't figure it out how to read the final response uri.

In previous versions of PHP Guzzle you just call $response->getEffectiveUrl() and you get it.

I expected to have something similar in the new version so the final code looks like this:

$response = $httpClient->post('http://service.com/login', [
    'form_params' => [
        'user'   => $user,
        'padss'  => $pass,
    ]
]);

$url = $response->getEffectiveUrl();

But in the latest version $response is now a GuzzleHttp\Psr7\Response and there is no method which allow me to retrieve the uri.

I read about the redirects here (http://guzzle.readthedocs.org/en/latest/quickstart.html#redirects) but it says nothing about

UPDATE: The 6.1 version now allows you to easily do this:

https://stackoverflow.com/a/35443523/1811887

Thanks @YauheniPrakopchyk

回答1:

Guzzle 6.1 solution right from the docs.

$client = new \GuzzleHttp\Client();

$client->get('http://some.site.com', [
    'query'   => ['get' => 'params'],
    'on_stats' => function (TransferStats $stats) use (&$url) {
        $url = $stats->getEffectiveUri();
    }
])->getBody()->getContents();

echo $url; // http://some.site.com?get=params

回答2:

You can check what redirects your request had byt setting track_redirects parameter:

$client = new \GuzzleHttp\Client(['allow_redirects' => ['track_redirects' => true]]);

$response = $client->request('GET', 'http://example.com');

var_dump($response->getHeader(\GuzzleHttp\RedirectMiddleware::HISTORY_HEADER));

If there were any redirects last one should be your effective url otherewise your initial url.

You can read more about allow_redirects here http://docs.guzzlephp.org/en/latest/request-options.html#allow-redirects.

回答3:

I am using middleware to track requests in the redirect chain and save the last one. The uri of the last request is what you want.

Try this code:

$stack = \GuzzleHttp\HandlerStack::create();
$lastRequest = null;
$stack->push(\GuzzleHttp\Middleware::mapRequest(function (\Psr\Http\Message\RequestInterface $request) use(&$lastRequest) {
    $lastRequest = $request;
    return $request;
}));

$client = new Client([
    'handler' => $stack,
    \GuzzleHttp\RequestOptions::ALLOW_REDIRECTS => true
]);

$request = new \GuzzleHttp\Psr7\Request('GET', 'http://httpbin.org/redirect-to?url=http://stackoverflow.com');
$response = $client->send($request);
var_dump($lastRequest->getUri()->__toString());

Result:

string(24) "http://stackoverflow.com"

Example with class:

class EffectiveUrlMiddleware
{
    /**
     * @var \Psr\Http\Message\RequestInterface
     */
    private $lastRequest;

    /**
     * @param \Psr\Http\Message\RequestInterface $request
     *
     * @return \Psr\Http\Message\RequestInterface
     */
    public function __invoke(\Psr\Http\Message\RequestInterface $request)
    {
        $this->lastRequest = $request;
        return $request;
    }

    /**
     * @return \Psr\Http\Message\RequestInterface
     */
    public function getLastRequest()
    {
        return $this->lastRequest;
    }
}

$stack = \GuzzleHttp\HandlerStack::create();
$effectiveYrlMiddleware = new EffectiveUrlMiddleware();
$stack->push(\GuzzleHttp\Middleware::mapRequest($effectiveYrlMiddleware));

$client = new Client([
    'handler' => $stack,
    \GuzzleHttp\RequestOptions::ALLOW_REDIRECTS => true
]);

$request = new \GuzzleHttp\Psr7\Request('GET', 'http://httpbin.org/redirect-to?url=http://stackoverflow.com');
$response = $client->send($request);
var_dump($effectiveYrlMiddleware->getLastRequest()->getUri()->__toString());

回答4:

I think it's best to use response headers to store this information. I wrote a simple class that saves effective url in X-GUZZLE-EFFECTIVE-URL header:

https://gist.github.com/Thinkscape/43499cfafda1af8f606d

Usage:

<?php
use GuzzleHttp\Client;
use Thinkscape\Guzzle\EffectiveUrlMiddleware;

// Add the middleware to stack and create guzzle client
$stack = HandlerStack::create();
$stack->push(EffectiveUrlMiddleware::middleware());
$client = new Client(['handler' => $stack]);

// Test it out!
$response = $client->get('http://bit.ly/1N2DZdP');
echo $response->getHeaderLine('X-GUZZLE-EFFECTIVE-URL');

回答5:

Accepted answer didn't work for me but led me on the way:

$client = new \GuzzleHttp\Client();
$client->request('GET', $url, [
    'on_stats' => function (\GuzzleHttp\TransferStats $stats) {
        echo($stats->getHandlerStats()['redirect_url']);
    }
]);

回答6:

I'm not an expert in the subject but, from what I understand, the effective url is not something that is defined in a general HTTP message. I think is is something related to Curl and since Guzzle can use any HTTP handler to send requests (see here), the information is not necessarily present.