Zend\Http\Response::getBody() tries to decode gzip that has already been decoded by cURL

[weierophinney]

When performing a HTTP request to a gzipped resource via a cURL adapter that is configured to decode content, a following call to $httpResponse->getBody() fails because it looks at the still-set Content-Encoding header and tries to decode the content, which is at that point already decoded, again.

You can reproduce it like this:

$httpClient = new Zend\Http\Client($urlWithGzipEncodedStuff,  [
    'adapter'      => 'Zend\Http\Client\Adapter\Curl',
    'curloptions'  => [
        // Instruct cURL to accept and decode any supported encoding.
        CURLOPT_ENCODING => '' 
    ]
]);
$httpResponse = $httpClient->send();

// BOOM: tries to decode what has already been decoded by  cURL
$content = $httpResponse->getBody();

[weierophinney]

These tests won't get run by Travis. To verify them, do the following:

• Copy tests/TestConfiguration.php.dist to tests/TestConfiguration.php
• Edit tests/TestConfiguration.php, and alter the following entries:

defined('TESTS_ZEND_HTTP_CLIENT_BASEURI') || define('TESTS_ZEND_HTTP_CLIENT_BASEURI', 'http://localhost:8080'); // alter to a URI you can use; localhost also works
defined('TESTS_ZEND_HTTP_CLIENT_ONLINE') || define('TESTS_ZEND_HTTP_CLIENT_ONLINE', true);

• Descend into tests/ZendTest/Zend/Http/Client/_files/ and start the built-in PHP web server:

php -S localhost:8080

• From the tests directory, run the cURL client tests; I was getting an infinite loop somewhere, so ran only this group: phpunit --group 4555 ZendTest/Http/Client/CurlTest.php