[HttpClient] Headers are lowercased #32819
Description
Hello guys !
I'm submitting you the following issue:
Symfony version(s) affected: 4.3.x
Description
When I set some headers to a curl POST request, the keys are lowercased. This is a problem for some API's
$this->httpClient = HttpClient::create(['headers' => [
'X-Apple-Header1' => 'someSecretKey',
'X-Apple-Header2' => 'someSecretKey',
'X-Apple-Header3' => 'someSecretKey',
'Content-Type' => 'application/json',
'Accept' => 'application/json',
]]);And it's converted by HttpClient to :
POST /api/endpoint/1 HTTP/1.1
Host: api.apple.com
Accept-Encoding: deflate, gzip
x-apple-header1: someSecretKey
x-apple-header2: someSecretKey
x-apple-header3: someSecretKey
Additional context
I'm using the Curl extension
thanks for helping !