Question

I need to load somehow the html code of a webpage A into a javascript string of another webpage B, on a different host. I know this is impossible to do with javascript alone because of the same origin policy, and I know I could do it loading the page via php on my server and then send results back to the user’s client but I wouldn’t be able to handle so many requests, so I need it to be done directly by the user’s browser. I can use nearly whatever browser scripting language/applet framework common enough to be installed on the majority of my users’ computers, like flash and java.
On example, what if I use flash or java to load the external html code and then call a javascript callback function providing the source? Could this work?
Do you have ANY idea? I gratefully accept any suggestion, and I REALLY appreciate examples!

Thank you very much!
Matteo

Answer 1

It would require a digitally signed and trusted applet in order to reach cross-domain, short of the user running a plug-in 2 architecture JRE and the site implementing a Cross-Domain XML.

Ordinarily, unsigned Java applets or applications may only connect
back to the web server from which they originated. This restriction
prevents an applet from causing denial-of-service attacks by making
rapid connections to arbitrary machines on the Internet.

In Java SE 6 update 10, both the Java Web Start and Java Plug-In
technologies contain preliminary support for cross-domain policy
files, which specify how unsigned code may access web services on the
Internet. The crossdomain.xml policy file is hosted on a given server
and allows either selected clients, or clients from anywhere, to
connect to that server. Cross-domain policy files make accessing web
services much easier, particularly from unsigned applets.