/**
* Add the appropriate expect header to a request
*
* @param EntityEnclosingRequestInterface $request Request to update
* @param EntityBodyInterface $body Entity body of the request
* @param string|int $expect Expect header setting
*/
protected function addExpectHeader(EntityEnclosingRequestInterface $request, EntityBodyInterface $body, $expect)
{
// Allow the `expect` data parameter to be set to remove the Expect header from the request
if ($expect === false) {
$request->removeHeader('Expect');
} elseif ($expect !== true) {
// Default to using a MB as the point in which to start using the expect header
$expect = $expect ?: 1048576;
// If the expect_header value is numeric then only add if the size is greater than the cutoff
if (is_numeric($expect) && $body->getSize()) {
if ($body->getSize() < $expect) {
$request->removeHeader('Expect');
} else {
$request->setHeader('Expect', '100-Continue');
}
}
}
}
/**
* Converts a POST request to a GET request by moving POST fields into the
* query string.
*
* Useful for pre-signing query protocol requests.
*
* @param EntityEnclosingRequestInterface $request Request to clone
*
* @return RequestInterface
* @throws \InvalidArgumentException if the method is not POST
*/
public static function convertPostToGet(EntityEnclosingRequestInterface $request)
{
if ($request->getMethod() !== 'POST') {
throw new \InvalidArgumentException('Expected a POST request but ' . 'received a ' . $request->getMethod() . ' request.');
}
$cloned = RequestFactory::getInstance()->cloneRequestWithMethod($request, 'GET');
// Move POST fields to the query if they are present
foreach ($request->getPostFields() as $name => $value) {
$cloned->getQuery()->set($name, $value);
}
return $cloned;
}
