Running into Error: Maximum execution time of 0 seconds exceeded

[pscheit]

Hey!
Thanks so much for zipstream, been a fan for years.

I tried all other resources - php bugs, stackoverflow, several AI agents. Starting to believe that this is something related to zip-stream? IDK.

Maybe you can point me into the right direction. Really grasping for straws here. Thank you for reading.

My code is pretty close to this example:
https://maennchen.dev/ZipStream-PHP/guide/Symfony.html#usage-with-symfony

I am streaming 283 files (2-4 mb per file) from S3 with psr7stream (guzzle). So the resulting zip is of > 1GB

   function getContentAsPsr7Stream() {
            $object = $this->s3Client->getObject([
                'Bucket' => $this->tenantBucketname,
                'Key' => $key,
            ]);

            $body = $object->get('Body');
            Assert::isInstanceOf($body, \GuzzleHttp\Psr7\Stream::class);
            return $body;
   }

i then do (symfony/http-foundation v5.4.48)

            return new StreamedResponse(function () use ($zipFileName, $manager, $pandoc, $dto): void {
                $zip = new ZipStream(
                    outputName: $zipFileName,
                    defaultEnableZeroHeader: true,
                    contentType: 'application/octet-stream'
                );
                // ... define some variables
              
                foreach ($images as $key => $image) {
                    $zip->addFileFromPsr7Stream($postFolder . '/' . $imagen, getContentAsPsr7Stream($key));
                }

                $zip->finish();
            });

And then run into:

Error: Maximum execution time of 0 seconds exceeded

at /app/vendor/guzzlehttp/psr7/src/StreamWrapper.php line 86
(while doing stream read)

├──ext-json *
├──guzzlehttp/promises ^1.5.3 || ^2.0.3
│  └──php ^7.2.5 || ^8.0
├──guzzlehttp/psr7 ^2.7.0
│  ├──php ^7.2.5 || ^8.0
│  ├──psr/http-factory ^1.0
│  │  ├──php >=7.1
│  │  └──psr/http-message ^1.0 || ^2.0
│  │     └──php ^7.2 || ^8.0
│  ├──psr/http-message ^1.1 || ^2.0
│  │  └──php ^7.2 || ^8.0
│  └──ralouphie/getallheaders ^3.0
│     └──php >=5.6
├──php ^7.2.5 || ^8.0
├──psr/http-client ^1.0
│  ├──php ^7.0 || ^8.0
│  └──psr/http-message ^1.0 || ^2.0
│     └──php ^7.2 || ^8.0
└──symfony/deprecation-contracts ^2.2 || ^3.0
   └──php >=8.1

maennchen/zipstream-php 3.1.1 ZipStream is a library for dynamically streaming dynamic zip files from PHP without writing to the disk at all on the server.
├──ext-mbstring *
│  └──php >=7.2
├──ext-zlib *
└──php-64bit ^8.1

PHP 8.3.16 (cli) (built: Jan 17 2025 01:31:10) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.3.16, Copyright (c) Zend Technologies

Do you have any idea where to look next? I am not sure what is causing my script to timeout. It should run max 6 minutes, but stopps at 1 minute adding the error to the zipstream.

Its not the max_execution_time (set to 0)
its not the webserver timing out (limit is 6 minutes)
its not fpm request timeout (set to 0)
its not max_input_time (set to 0)

The payload is just the array of image ids, so pretty basic and parsing is done after few milliseconds. So guess its not max_input_time. ini_set('max_input_time', 0); doesnt fix it either.

I use nginx + php in docker and have nearly defaults for everything.

Grasping for straws here! Thank you!

[pscheit]

Oh it varies with the stacktrace. Got one in:
at /app/vendor/maennchen/zipstream-php/src/File.php line 339

too

            if ($deflate) {
                $data =  deflate_add(     // here
                    $deflate,
                    $data,
                    feof($this->unpackStream()) ? ZLIB_FINISH : ZLIB_NO_FLUSH
                );
            }

[pscheit]

I got further down the rabbit hole, by reading this:
https://bafford.com/2016/12/02/php-misleading-error-maximum-execution-time-of-0-seconds-exceeded/

I think this is unrelated to zipstream at all. Something in my environment is sending SIGPROF to php, cause I cannot reproduce this locally.

Happy if someone has hints, but this is not related to streaming at all