출처 : https://maxchadwick.xyz/blog/http-request-header-size-limits

send-request

#!/usr/bin/env php
<?php

$url = $argv[1];
$bytes = $argv[2];
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Junk: ' . bin2hex(openssl_random_pseudo_bytes($bytes / 2)),
]);
$response = curl_exec($ch);
$info = curl_getinfo($ch);
echo 'Response Code: ' . $info['http_code'] . PHP_EOL;
curl_close($ch);