= CORS (cross origin resource sharing) =
* https://www.tutorialspoint.com/spring_boot/spring_boot_cors_support.htm
Cross-Origin Resource Sharing (CORS) is a security concept that allows restricting the resources implemented in web browsers. It prevents the JavaScript code producing or consuming the requests against different origin.
=== read.example.org/index.php ===
{{{#!highlight php
}}}
=== auth.example.org/index.php ===
{{{#!highlight php
}}}
=== app.example.org/index.html ===
{{{#!highlight html
}}}
=== vhosts ===
{{{
ServerName app.example.org
DocumentRoot "/var/www/htdocs/app.example.org"
Require local
AllowOverride All
ServerName auth.example.org
DocumentRoot "/var/www/htdocs/auth.example.org"
Require local
AllowOverride All
ServerName read.example.org
DocumentRoot "/var/www/htdocs/read.example.org"
Require local
AllowOverride All
}}}