Called Action Message Format (AMF), this binary protocol for exchanging data can be used over HTTP in place of text-based protocols that transmit XML. Level-up your skills at QCon New York (June 13-15, 2023)!įor some time, Flash Player has supported a transport protocol that alleviates the unnecessary bottlenecks associated with text-based protocols and provides developers a simpler method of communicating with servers. Uncover emerging trends and practices from domain experts. AMF reduces the layers for marshalling data over the wire In addition, this data abstraction layer consumes resources on the server-side and client-side when the data is serialized and deserialized (see Figure 1).įigure 1. One downside to text-based protocols like XML is that the additional layer of data abstraction is usually cumbersome to write and maintain. Flickr then responds with simple XML, which makes it easy for developers to easily parse and use the data. This allows any developer using any technology to easily interact with Flickr by sending simple text-based requests to Flickr. For instance, Flickr's web services use RESTful-style XML over HTTP. XML is perfect when protocol transparency is necessary. Every server technology can easily speak XML since it is a text-based protocol. This method is simple and fairly easy to set up. Many applications running in Adobe AIR or Flash Player use XML-over-HTTP technologies, such as SOAP or REST, to move data between the client and server. But differences in how data is passed over HTTP can dramatically reduce application performance as well as developer productivity.
Usually this communication happens over HTTP - the same protocol used by the web browser to load web pages and applications. Regardless of the server-side technology in place, some sort of network communication is needed when the client-side application running in Flash Player or Adobe AIR needs to communicate with the server. Net, PHP, Ruby or any number of other server-side technologies. The servers themselves can be running Java, ColdFusion.
Developers building these applications with tools like Adobe Flex and Flash CS3 have a variety of options for enabling their applications to communicate with servers. The actual server-side process in question can then hit a function, for example during a loop, to check whether it should abort processing and cleanup any work as appropriate.Applications that run on the desktop with Adobe AIR or in the browser with Flash Player usually connect to a server when they need to load or manipulate data. Ĭlient can then check progress by polling server, or submit request to kill process Here are example functions that could be used on page or remote requests.
#Coldfusion flex application wizard code#
There are multiple approaches and ways of names, organizing and calling the code below, but hopefully it is helpful.Īt some point during request start, store information about the process in shared scope and return an ID to the client. To add onto Ben Doom's answer, I'm including some example code of a way this can be accomplished.
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