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Avoid empty "If-Modified-Since" header in validation request #34385

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merged 1 commit into from Nov 23, 2019
Merged

Avoid empty "If-Modified-Since" header in validation request #34385

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4 changes: 3 additions & 1 deletion src/Symfony/Component/HttpKernel/HttpCache/HttpCache.php
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Expand Up @@ -352,7 +352,9 @@ protected function validate(Request $request, Response $entry, $catch = false)
}

// add our cached last-modified validator
$subRequest->headers->set('if_modified_since', $entry->headers->get('Last-Modified'));
if ($entry->headers->has('Last-Modified')) {
$subRequest->headers->set('if_modified_since', $entry->headers->get('Last-Modified'));
}

// Add our cached etag validator to the environment.
// We keep the etags from the client to handle the case when the client
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1 change: 1 addition & 0 deletions src/Symfony/Component/HttpKernel/Tests/HttpCache/HttpCacheTest.php
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Expand Up @@ -859,6 +859,7 @@ public function testValidatesCachedResponsesUseSameHttpMethod()
public function testValidatesCachedResponsesWithETagAndNoFreshnessInformation()
{
$this->setNextResponse(200, [], 'Hello World', function ($request, $response) {
$this->assertFalse($request->headers->has('If-Modified-Since'));
$response->headers->set('Cache-Control', 'public');
$response->headers->set('ETag', '"12345"');
if ($response->getETag() == $request->headers->get('IF_NONE_MATCH')) {
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