Felix Buenemann authored Mar 07, 2018 and Susanne Moog committed Mar 14, 2018

The change of \TYPO3\CMS\Core\Utility\GeneralUtility::getUrl()
from cURL to GuzzleHttp the format of the $requestHeaders param was
implicitly changed from an array of header strings to an associative
array where the key is the header name and the value is either a single
or an array of values for that header.

This adds back support for the old list of headers format by detecting a
non-associative array and converting it to the Guzzle key/value(s) style.

At the same time the 'old' way is deprecated.

Resolves: #84171
Related: #70056
Releases: master, 8.7
Change-Id: I41b23993957288dfd5294129fa8039aab717461d
Reviewed-on: https://review.typo3.org/56046


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>