memory leak when repeatedly connecting while using HTTPS

[Kveri]

Steps to reproduce:

<?php
require_once('vendor/autoload.php');

use InfluxDB2\Client;
use InfluxDB2\Model\WritePrecision;
use InfluxDB2\Point;

$token = 'token';
$org = 'Home';
$bucket = 'default';

while (1) {
  $client = new Client([
    "url" => "https://influx:8086",
    "token" => $token,
  ]);


  $dataArray = ['name' => 'test',
    'fields' => array('xxx' => 123),
  ];

  $writeApi = $client->createWriteApi();
  $writeApi->write($dataArray, WritePrecision::MS, $bucket, $org);

  $writeApi->close();
  unset($writeApi);
  unset($dataArray);
  $client->close();
  unset($client);
}

Expected behavior:
Memory usage doesn't increase that heavily.

Actual behavior:
Memory usage does increase heavily. I dumped the memory, it seems to be related to CA certificates. I was able to find thousands of instances of each CA certificate in php memory.

Also I get this error after 10-20 seconds:

PHP Fatal error:  Uncaught Http\Client\Exception\RequestException: error setting certificate file: /etc/ssl/certs/ca-certificates.crt in /home/kveri/goodwe/vendor/php-http/curl-client/src/Client.php:166
Stack trace:
#0 /home/kveri/goodwe/vendor/php-http/client-common/src/PluginClient.php(81): Http\Client\Curl\Client->sendRequest()
#1 /home/kveri/goodwe/vendor/php-http/client-common/src/Plugin/RedirectPlugin.php(175): Http\Client\Common\PluginClient->Http\Client\Common\{closure}()
#2 /home/kveri/goodwe/vendor/php-http/client-common/src/PluginChain.php(46): Http\Client\Common\Plugin\RedirectPlugin->handleRequest()
#3 /home/kveri/goodwe/vendor/php-http/client-common/src/Plugin/HeaderDefaultsPlugin.php(44): Http\Client\Common\PluginChain->Http\Client\Common\{closure}()
#4 /home/kveri/goodwe/vendor/php-http/client-common/src/PluginChain.php(46): Http\Client\Common\Plugin\HeaderDefaultsPlugin->handleRequest()
#5 /home/kveri/goodwe/vendor/php-http/client-common/src/PluginChain.php(61): Http\Client\Common\PluginChain->Http\Client\Common\{closure}()
#6 /home/kveri/goodwe/vendor/php-http/client-common/src/PluginClient.php(87): Http\Client\Common\PluginChain->__invoke()
#7 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/DefaultApi.php(151): Http\Client\Common\PluginClient->sendRequest()
#8 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/DefaultApi.php(214): InfluxDB2\DefaultApi->sendRequest()
#9 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/DefaultApi.php(79): InfluxDB2\DefaultApi->request()
#10 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/WriteApi.php(145): InfluxDB2\DefaultApi->post()
#11 [internal function]: InfluxDB2\WriteApi->InfluxDB2\{closure}()
#12 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/WriteRetry.php(70): call_user_func()
#13 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/WriteApi.php(146): InfluxDB2\WriteRetry->retry()
#14 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/WriteApi.php(86): InfluxDB2\WriteApi->writeRaw()
#15 /home/kveri/goodwe/xxx.php(24): InfluxDB2\WriteApi->write()
#16 {main}

Next InfluxDB2\ApiException: [0] error setting certificate file: /etc/ssl/certs/ca-certificates.crt in /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/DefaultApi.php:179
Stack trace:
#0 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/DefaultApi.php(214): InfluxDB2\DefaultApi->sendRequest()
#1 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/DefaultApi.php(79): InfluxDB2\DefaultApi->request()
#2 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/WriteApi.php(145): InfluxDB2\DefaultApi->post()
#3 [internal function]: InfluxDB2\WriteApi->InfluxDB2\{closure}()
#4 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/WriteRetry.php(70): call_user_func()
#5 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/WriteApi.php(146): InfluxDB2\WriteRetry->retry()
#6 /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/WriteApi.php(86): InfluxDB2\WriteApi->writeRaw()
#7 /home/kveri/goodwe/xxx.php(24): InfluxDB2\WriteApi->write()
#8 {main}
  thrown in /home/kveri/goodwe/vendor/influxdata/influxdb-client-php/src/InfluxDB2/DefaultApi.php on line 179

Specifications:

• Client Version: 3.2.0
• InfluxDB Version: 2.6.0
• Platform: x86_64 ubuntu

[bednar]

Hi @Kveri,

thanks for using our client.

Does the /etc/ssl/certs/ca-certificates.crt contains valid CA certificates?

For more info see:

• https://www.php.net/manual/en/function.curl-setopt.php

Regards

[Kveri]

Hi @Kveri,

thanks for using our client.

Does the /etc/ssl/certs/ca-certificates.crt contains valid CA certificates?

For more info see:

• https://www.php.net/manual/en/function.curl-setopt.php

Regards

yes, all of them are valid. I checked them using openssl x509 -in -noout -text. It's standard ubuntu distribution CA list + one CA cert added for my local CA.