Unexpected HTTP/1.x request: POST /3/device/XXXX

Question

Hi i am sending IOS push notifications using apns and curl in php and getting this error message.

I also define \'CURL_HTTP_VERSION_2_0\' but still getting this erro

Answer 1

I was using an older version of PHP where phpinfo() showed that HTTP2 wasn't enabled for the curl library. Upgrading PHP to a more recent version fixed this issue for me.