Yii2: session_regenerate_id(): Failed to create(read) session ID: memcache (path: 11.11.11.11:1111)

[xiaoxing598]

My environment：php7.0.x yii2-2.0.10

I installed php7 and wrote session data to Memcache, and I made sure that the corresponding extensions were installed, either Memcache or Memcached. I get one of the following errors:

PHP Recoverable Error – yii\base\ErrorException
session_regenerate_id(): Failed to create(read) session ID: memcache (path: 11.11.11.11:1111)

The following is the code area where the error occurred:

/**
     * Updates the current session ID with a newly generated one .
     * Please refer to <http://php.net/session_regenerate_id> for more details.
     * @param boolean $deleteOldSession Whether to delete the old associated session file or not.
     */
    public function regenerateID($deleteOldSession = false)
    {
        if ($this->getIsActive()) {
            // add @ to inhibit possible warning due to race condition
            // https://github.com/yiisoft/yii2/pull/1812
            if (YII_DEBUG && !headers_sent()) {
                session_regenerate_id($deleteOldSession);
            } else {
                @session_regenerate_id($deleteOldSession);
            }
        }
    }

The strange question bothered me, I created the test file, simply used the session, including the write or read, everything was normal. I have to doubt that the framework of the problem, suspected frame using the expired function. But all this hope to get your confirmation.

[samdark]

How is your session configured? via CacheSession?

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[Renkas]

I remember this being fixed in 2.0.11 ... As I had same issue with Redis

at least I believe it is the same issue

[samdark]

@xiaoxing598 can you try updating Yii?

[xiaoxing598]

[Session]
; Handler used to store/retrieve data.
; http://php.net/session.save-handler
session.save_handler = memcache

I think it is not configured php error caused by the following script I used to test the session is normal.

<?php
ini_set("session.save_handler", "memcached");
//ini_set("session.save_handler", "files");
ini_set("session.save_path", "11.11.11.11:1111");
//ini_set("session.save_path", "/tmp");
session_start();
$_SESSION['AA']='helloworld!';
echo $_SESSION['AA'];

@samdark Which version of the problem in the repair?I will upgrade to the latest and try again

[xiaoxing598]

@Renkas I was suspected to be Memcache, but when I changed to Redis, the problem still existed and I began to think that the problem might be somewhere else.

[samdark]

2.0.11 and master.

[xiaoxing598]

I have upgraded to the latest version:

- Removing yiisoft/yii2 (2.0.10)
  - Installing yiisoft/yii2 (2.0.11.2)
    Downloading: 100%

Still this problem, the problem seems to have not been resolved.

[Renkas]

Looking at your configuration it seems you are not using Yii's session handling for Memcached but PHP's own implementation.

I'm using Redis session component myself (https://github.com/yiisoft/yii2-redis/blob/master/docs/guide/topics-session.md) and in my previous comment I expected you have similiar solution - but it seems to be quite different thing.

Anyway I don't see this being Yii issue - rather your configuration or PHP's. But sorry can't help anymore.

[samdark]

It seems PHP 7 is raising a fatal error in case of failure to start a session which was not the case previously...

[xiaoxing598]

If you modify the php.ini file, let the session be written to the file. The above problem will not happen.

[xiaoxing598]

@Renkas Use Memcached not to avoid this problem? Switching to Redis will make me take extra costs because I purchased the cloud service.
If you let Yii manage the session, is there a support for Memcache?

[ItsReddi]

Because of your question:
http://www.yiiframework.com/doc-2.0/yii-web-cachesession.html
http://www.yiiframework.com/doc-2.0/yii-caching-memcache.html

But like @samdark mentioned their seems to be also an other issue.
Could not reproduce on RancherOS php 7.0.15 with memcached as sessionhandler via php.ini.

[xiaoxing598]

@samdark This issue has affected the progress of the actual project development, you can help me solve it? thank you very much!

[xiaoxing598]

@ItsReddi @Renkas
I try to manage my own session, because the use of Memcache, so according to Rdis Session wrote a class for Memcache, through this way to solve.
But I think the problem should be resolved by the Yii framework, after all, my project is very much, if the above way, I need to spend a lot of time to modify the previous project, it will be very terrible.

[samdark]

@xiaoxing598 could you share the class you've implemented and note what was changed?

[xiaoxing598]

_Sorry to reply to you so late today, I just arrived at the office. It is now 10:15 Beijing time_

I declare using a custom session manager

'components' => [
    'session'=>[
            'class'=>'app\components\MemSession',
    ],
]

Imitate the "Redis Session" category for Memcache transformation

<?php

namespace app\components;

use Yii;
use yii\web\Session as WebSession;

/**
 * <p>自定义会话数据维护类<p>
 *
 * 使用此类把会话信息存储到Memcache中，使用此方法后会替换掉PHP自己的会话管理。
 *
 * @package app\components
 */
class MemSession extends WebSession
{
    /**
     * @var string 缓存使用组件
     */
    public $memcache = 'cache';

    /**
     * @var string 键前缀
     */
    public $keyPrefix;

    /**
     * 初始化组件
     */
    public function init()
    {
        $this->memcache = Yii::$app->get($this->memcache);

        if ($this->keyPrefix === null) {
            $this->keyPrefix = substr(md5(Yii::$app->id), 0, 5);
        }
        parent::init();
    }

    /**
     * Returns a value indicating whether to use custom session storage.
     * This method overrides the parent implementation and always returns true.
     * @return boolean whether to use custom storage.
     */
    public function getUseCustomStorage()
    {
        return true;
    }

    /**
     * Session read handler.
     * Do not call this method directly.
     * @param string $id session ID
     * @return string the session data
     */
    public function readSession($id)
    {
        $data = $this->memcache->get($this->calculateKey($id));
        return $data === false || $data === null ? '' : $data;
    }

    /**
     * Session write handler.
     * Do not call this method directly.
     * @param string $id session ID
     * @param string $data session data
     * @return boolean whether session write is successful
     */
    public function writeSession($id, $data)
    {
        return (bool)$this->memcache->set($this->calculateKey($id), $data, $this->getTimeout());
    }

    /**
     * Session destroy handler.
     * Do not call this method directly.
     * @param string $id session ID
     * @return boolean whether session is destroyed successfully
     */
    public function destroySession($id)
    {
        return $this->memcache->delete($this->calculateKey($id));
    }

    /**
     * Generates a unique key used for storing session data in cache.
     * @param string $id session variable name
     * @return string a safe cache key associated with the session variable name
     */
    protected function calculateKey($id)
    {
        return $this->keyPrefix . md5(json_encode([__CLASS__, $id]));
    }
}

[xiaoxing598]

Hi, is this question confirmed?

[samdark]

No. Not able to reproduce it still...

[xiaoxing598]

If you like, I can provide as much support as possible as long as you need it.

_This problem is dedicated to the development of our server can be reproduced, this is a Tencent cloud server, I trust you, if you are convenient, you can connect the terminal. You can leave an email address, I sent you sensitive information._

[SilverFire]

@xiaoxing598 I'm not involved in this problem yet, but if someone from core team will ask for a credentials to access to your server, please, verify person identity first. All core team members have a personal PGP signature and the fingerprint is published on GitHub profile of each core team member.

Ask to sign some message with that key and use gpg --verify message.txt to check the key fingerprint. Thank you

[xiaoxing598]

@samdark Is there any other place to check your public key file?

$ gpg --keyserver hkp://subkeys.pgp.net --search-keys 6A325E4A
gpg: searching for "6A325E4A" from hkp server subkeys.pgp.net
gpg: keyserver timed out
gpg: keyserver search failed: Keyserver error

[samdark]

Just send me an email with details. Can't promise to check it fast though... traveling currently.

[xiaoxing598]

@samdark Mail([email protected]) has been sent, please pay attention to check.

[ThePepster]

Seems like you need to upgrade memcached.

This bug was openned with PHP.net about it:
https://bugs.php.net/bug.php?id=71187

They identified that the issue was with the memcached code and they opened this pull request and closed the bug report.
https://github.com/php-memcached-dev/php-memcached/pull/164

The pull request was merged on January 20th so presumably this is available since version 3.0.0 where they mention "Fixes crash with session_regenerate_id (work-around for PHP bug)".
https://github.com/php-memcached-dev/php-memcached/releases/tag/v3.0.0

[samdark]

Seems we can't solve it within Yii so I'm closing the issue.

[grikdotnet]

I just stepped into this problem with php7.1+memcached from ondrej ppa and yii1.
Weird version info about php-memcached extension:
Package: php-memcached
Versions:
3.0.3+2.2.0-1+deb.sury.org~trusty+1

Solved by adding memcached.sess_binary_protocol=0 to /etc/php/7.1/mods-available/memcached.ini

[deep12650]

I solved this issue by changing the usergroup permission to www-data. As following for ubuntu:
sudo chown -R www-data:www-data /root_folder/