Specifications

CHAPTER 1

The following example shows a typical deployment environment for a Flex SDK application:

In this example, the customer requests the application SWF file from webserver.example.com, the server returns

the SWF file to the customer, and the SWF file plays. The executing SWF file must be able to access the necessary

resources from outside the firewall.

Design phase

With Flex SDK, one of your first design decisions might be to choose a design pattern that fits your application

requirements. That design pattern might have implications on how you structure your development environment,

determine the external data services that your application must access, and define how you integrate your Flex

application into a larger web application.

Configure phase

For run-time configuration, you ensure that your executing SWF file can access the necessary resources including

asset files (such as image files) and external data services. If you access a resource on a domain other than the

domain from which the SWF file is served, you must define a crossdomain.xml file on the target server, or make

the request through a proxy server.

webserver.example.com

Proxy server

Application server

appserver.example.com

Web services server

nance.example.com

Web server

Firewall/Router/DNS server

HTTP/SOAP

Flex applications on

client machine