23.7. Handling Cross-Domain Policy Issues

When Flash Player is asked to make a request to a domain other than the one from which the current Flash document was downloaded, it needs to have permission from the target domain. This issue frequently comes up when you're using data from a third-party data provider, but it also can be relevant when you have two or more domains in a single organization.

Figure 23.14 describes the circumstance in which cross-domain permission is required. If a Flex application downloaded from one domain makes an HTTP request to a different domain, Flash Player automatically seeks cross-domain permission via a request for a cross-domain policy file from the remote domain.