Set subdomain Allow Origin on Apache and return 200 OK on OPTONS preflight request for ajax use without jsonp

gistfile1.txt

SetEnvIf Origin ^(https?://.+\.yourdomain\.com(?::\d{1,5})?)$   CORS_ALLOW_ORIGIN=$1

Header always set Access-Control-Allow-Origin %{CORS_ALLOW_ORIGIN}e env=CORS_ALLOW_ORIGIN
Header always set Access-Control-Allow-Methods "POST, GET, OPTIONS, DELETE, PUT"
Header always set Access-Control-Max-Age "1000"
Header always set Access-Control-Allow-Headers "x-requested-with, Content-Type, origin, authorization, accept, client-security-token"
Header merge  Vary "Origin"

RewriteEngine On
RewriteCond %{REQUEST_METHOD} OPTIONS
RewriteRule ^(.*)$ $1 [R=200,L]