forked from https://github.com/symfony/symfony
f0b1dc2f7e
This PR was merged into the 3.4 branch.
Discussion
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[HttpKernel] Call Response->setPrivate() instead of sending raw header() when session is started
| Q | A
| ------------- | ---
| Branch? | 3.4
| Bug fix? | yes
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | https://github.com/symfony/symfony/issues/24988
| License | MIT
| Doc PR | -
As described in #24988 I think the current handling of the `Cache-Control` header set by the `NativeSessionStorage` causes inconsistent behaviour.
In #24988 @nicolas-grekas states that if you start a session a response should be considered to be private. I do agree with this but up until now, nobody takes care of this on `kernel.response`.
I think we must always suppress the `NativeSessionStorage` from generating any headers by default. Otherwise the `Cache-Control` header never makes it to the `Response` instance and is thus missed by `kernel.response` listeners and for example the Symfony HttpCache. So depending on whether you use Symfony's HttpCache or Varnish as a reverse proxy, caching would be handled differently. Varnish would consider the response to be private if you set the php.ini setting `session.cache_limiter` to `nocache` (which is default) because it will receive the header. HttpCache would not because the `Cache-Control` header is not present on the `Response`. That's inconsistent and may cause confusion or problems when switching proxies.
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| LICENSE | ||
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| phpunit | ||
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| README.md | ||
| UPGRADE-3.0.md | ||
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| UPGRADE-3.3.md | ||
| UPGRADE-3.4.md | ||
| UPGRADE-4.0.md | ||
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