pass Content-Type (image/jpeg,image/jp4, image/tiff) instead of hardcoded image/jpeg

$pointers = elphel_get_circbuf_pointers(intval($port)-$port0,1);

$pointer = $pointers[count($pointers)-1]['circbuf_pointer'];

$contents = file_get_contents("http://$ip:$port/$rel");

$acao = "*";

$ct   = "image/jpeg"; 

// pass some headers from file_get_contents

// $http_response_header is auto populated

foreach($http_response_header as $h){

    $hv = explode(":",$h);

    if ($hv[0]=="Access-Control-Allow-Origin"){

        $acao = trim($hv[1]);

    }else if ($hv[0]=="Content-Type"){

        $ct   = trim($hv[1]);

    }

}

// allow CORS

header('Access-Control-Allow-Origin: *');

header('Content-type:image/jpeg');

echo file_get_contents("http://$ip:$port/$pointer/$rel");

header("Access-Control-Allow-Origin: $acao");

header("Content-Type: $ct");

echo $contents;

//echo file_get_contents("http://$ip:$port/$rel");

die();