Cross Domain AJAX - A quick anatomy of a mashup

Sep 19, 2007 ajax apache javascript security

This post is more than 18 months old. Since technology changes too rapidly, this content may be out of date (but that's not always the case). Please remember to verify any technical or programming information with the current release.

So after searching the Internet for some cross domain AJAX stuff, I noticed two interesting articles. The first was the specifics of writing these queries (located here). Then, the next gave a breakdown of how this might be useful in a mash-up collaborative sense (here).

The one missing point was how the collaboration should occur. There is talk about same parent domain but I think everyone’s forgetting about the DNS/webserver changes that need to happen.

In order to prove my concept on my windows box, I set up the examples. In that previous example, domain D had a subdomain of D_s which pointed to E.

I determined what the IP address of E was and entered that into my hosts file (I don’t have access to a DNS server at the moment) followed by the subdomain D_s.

Next, using apache, I found the virtual host for E, and put in ‘ServerAlias D_s’. This will make sure that the incoming connection to that IP will also respond to that sub domain.

I just wanted to jot this down to help fill in the hole I noticed. :)