Composer GZIP decoding test

composer_gzip_test.php

<?php

$retries = 0;

function fetch() {
    global $retries;

    echo "Retry " . $retries . " | ";

    $opts = array(
        'http' => array(
            'header' => array(
                "Accept-Encoding: gzip",
                "Connection: close",
                "User-Agent: Composer/1.2.1 (Linux; 3.13.0-86-generic; PHP 7.0.12)"
            ),
            'ignore_errors' => "1",
            'protocol_version' => "1.1"
        )
    );

    $context = stream_context_create($opts);

    $result = file_get_contents('http://packagist.org/p/paragonie/random_compat%24f49f654e75ef0944f24b3ffb74b531f0f5a757a807bcbda5b511b85d41ff7dcb.json', false, $context);

    //print_r($http_response_header);

    $retries++;

    if (($result = @zlib_decode($result)) !== false) {
        echo "Decoded successfully!\n";
    } else {
        echo "Error in Decoding process! Re-fetching ...\n";
        fetch();
    }
}

fetch();

Related to discussion from composer/composer#5814