forked from https://github.com/symfony/symfony
e3d90db747
This PR was squashed before being merged into the 2.8 branch (closes #22036).
Discussion
----------
Set Date header in Response constructor already
| Q | A
| ------------- | ---
| Branch? | 2.8
| Bug fix? | yes
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets |
| License | MIT
| Doc PR |
Setting the `Date` header in the `Response` constructor has been removed in #14912 and changed to a more lazy approach in `getDate()`.
That way, methods like `getAge()`, `getTtl()` or `isFresh()` cause side effects as they eventually call `getDate()` and the Request "starts to age" once you call them.
I don't know if this would be a nice test, but current behaviour is
```php
$response = new Response();
$response->setSharedMaxAge(10);
sleep(20);
$this->assertTrue($response->isFresh());
sleep(5);
$this->assertTrue($response->isFresh());
sleep(5);
$this->assertFalse($response->isFresh());
```
A particular weird case is the `isCacheable()` method, because it calls `isFresh()` only under certain conditions, like particular status codes, no `ETag` present etc. This symptom is also described under "Cause of the problem" in #19390, however the problem is worked around there in other ways.
So, this PR suggests to effectively revert #14912.
Additionally, I'd like to suggest to move this special handling of the `Date` header into the `ResponseHeaderBag`. If the `ResponseHeaderBag` guards that we always have the `Date`, we would not need special logic in `sendHeaders()` and could also take care of https://github.com/symfony/symfony/pull/14912#issuecomment-110105215.
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| appveyor.yml | ||
| CHANGELOG-2.2.md | ||
| CHANGELOG-2.3.md | ||
| CHANGELOG-2.4.md | ||
| CHANGELOG-2.5.md | ||
| CHANGELOG-2.6.md | ||
| CHANGELOG-2.7.md | ||
| CHANGELOG-2.8.md | ||
| composer.json | ||
| CONTRIBUTING.md | ||
| CONTRIBUTORS.md | ||
| LICENSE | ||
| phpunit | ||
| phpunit.xml.dist | ||
| README.md | ||
| UPGRADE-2.1.md | ||
| UPGRADE-2.2.md | ||
| UPGRADE-2.3.md | ||
| UPGRADE-2.4.md | ||
| UPGRADE-2.5.md | ||
| UPGRADE-2.6.md | ||
| UPGRADE-2.7.md | ||
| UPGRADE-2.8.md | ||
| UPGRADE-3.0.md | ||
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