Using Laravel HTTP Client with concurrent request and Guzzle options - laravel

Question

Using Laravel 9, I'm running a pool of async http queries. However before fetching the body, I need to perform some verifications on the headers (e.g. Content-type and Content-Length)
Here is what I tried:
use GuzzleHttp\RequestOptions;
use Illuminate\Http\Client\Pool;
use Illuminate\Http\Client\Response;
use Illuminate\Support\Facades\Http;
use Psr\Http\Message\ResponseInterface;
$responses = Http::pool(fn(Pool $pool) => [
$pool->withOptions([
RequestOptions::ON_HEADERS => function (ResponseInterface $response) {
if (($length = $response->getHeaderLine('Content-Length')) > 1048576) {
dump('Content-Length: ' . $length);
throw new \Exception('The file is too big');
}
},
])->get('<15MB_FILE_URL>'),
]);
$response = $responses[0];
if ($response instanceof Response) {
dump([
'ok' => $response->ok(),
'successful' => $response->successful(),
'failed' => $response->failed(),
'serverError' => $response->serverError(),
'clientError' => $response->clientError(),
'status' => $response->status(),
'reason' => $response->reason(),
'size' => strlen($response->body()),
]);
}
if ($response instanceof \Throwable) {
$this->warn('error: ' . $response->getMessage());
}
And it produces the following output
"Content-Length: 15882755"
array:8 [
"ok" => true
"successful" => true
"failed" => false
"serverError" => false
"clientError" => false
"status" => 200
"reason" => "OK"
"size" => 0
]
According to the Guzzle documentation:
If an exception is thrown by the callable, then the promise associated with the response will be rejected with a GuzzleHttp\Exception\RequestException that wraps the exception that was thrown.
I was expecting the response to be an Exception, the same way I end up with a GuzzleHttp\Exception\ConnectException when the server is not reachable, though the response seems to be errorless, event if the content is not downloaded.
Is there a better way to check the Content-Length and Content-Type (eventually after a redirection if needed) of a given url to avoid downloading the content whenever the type is not supported or the length is higher than expected in a request concurrency context.
Thanks for helping