Restful api : good !!!
example in WPIAAM plugin
to enable authorization http header, add to .htaccess:
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP:Authorization} ^(.*)
RewriteRule ^(.*) - [E=HTTP_AUTHORIZATION:%1]
</IfModule>
SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=$1