How to use crossdomain.

An article by Kuba    No Comments

[digg-me]Yesterday I run into a problem, I was developing some project that was connecting to the Data Base placed on my server through amfphp, when I tested it from my computer everythink worked fine but when I uploaded it to my server and tried to run it, the script didnt work at all. The problem was I needen the crossdomain.xml file on my server. Sometimes to work with amfphp or some other server side scripts you need the crossdomain file. It has to be placed in your root folder of your server (for most of you it will be public_html or www folder). Your crossdomain.xml file should look like this:

< !DOCTYPE cross-domain-policy
SYSTEM "http://www.macromedia.com/xml/dtds/cross-domain-policy.dtd">
< cross-domain-policy>
< !-- Your domain name -->
< allow-access-from domain="domainName.com" secure="false"/>
< allow-access-from domain="domainName.com" to-ports="80,443"/>
< allow-http-request-headers-from domain="domainName.com" headers="*" />
< !-- this part handles the acces from sub domains -->
< allow-access-from domain="*.domainName.com" secure="false" />
< allow-access-from domain="*.domainName.com" to-ports="80,443" />
< allow-http-request-headers-from domain="*.domainName.com" headers="*" />
< /cross-domain-policy>

So why do we need the crossdomain file?
Basically it’s allowing the externall domains to access the content of your server.