[Fix][3.4][HttpFoundation] Fix the updating of timestamp in the MemcachedSessionHandler#26443
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fabpot merged 1 commit intosymfony:3.4from Mar 13, 2018
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nicolas-grekas
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fabpot
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Thank you @tuxone. |
fabpot
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…n the MemcachedSessionHandler (Alessandro Loffredo)
This PR was merged into the 3.4 branch.
Discussion
----------
[Fix][3.4][HttpFoundation] Fix the updating of timestamp in the MemcachedSessionHandler
| Q | A
| ------------- | ---
| Branch? | 3.4
| Bug fix? | yes
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| License | MIT
Conditions: Symfony 3.4, PHP7 and sessions handled over memcache.
Apparently `memcached::touch()` returns `false` on a subsequent call with the same parameters. Since `updateTimestamp` is used in `AbstractSessionHandler::write()`
```
public function write($sessionId, $data)
{
if (\PHP_VERSION_ID < 70000 && $this->prefetchData) {
$readData = $this->prefetchData;
$this->prefetchData = null;
if ($readData === $data) {
return $this->updateTimestamp($sessionId, $data);
}
}
...
```
the result is that `write()` will return `false` on **any subsequent request within the same second** causing the following error:
```
HP Fatal error: Uncaught Symfony\Component\Debug\Exception\ContextErrorException: Warning: session_write_close(): Failed to write session data (user). Please verify that the current setting of session.save_path is correct (/var/lib/php/sessions) in Unknown:0
Stack trace:
#0 [internal function]: Symfony\Component\Debug\ErrorHandler->handleError(2, 'session_write_c...', 'Unknown', 0, NULL)
#1 [internal function]: session_write_close()
#2 {main}
thrown in Unknown on line 0
```
Can be reproduced on `symfony/skeleton:3.4` adding the following code to `public/index.php` and performing two consecutive requests:
```
$session = $kernel->getContainer()->get('session');
$session->set("foo", "bar");
```
Commits
-------
d007469 fix the updating of timestamp in the MemcachedSessionHandler
Author
|
Thanks for merging @fabpot |
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Conditions: Symfony 3.4, PHP7 and sessions handled over memcache.
Apparently
memcached::touch()returnsfalseon a subsequent call with the same parameters. SinceupdateTimestampis used inAbstractSessionHandler::write()the result is that
write()will returnfalseon any subsequent request within the same second causing the following error:Can be reproduced on
symfony/skeleton:3.4adding the following code topublic/index.phpand performing two consecutive requests: