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About Flash Communication Server Applications 27

When the user runs your Flash SWF file and the SWF file connects to the server, the server loads

the application and creates the application instance if it isn’t already running. The server accepts

the connection, creates a new Client object to represent the client application on the server, and

executes any server-side scripts that you have provided. The client also does its work, initiating

streams, sharing objects, and so on. The following sections describe this sequence of events in

more detail.

Note: Only the client application can initiate a communication session, and only the server can shut down an

application. Both the client and the server send and receive status messages, open and close streams, save and

share data, and end the network connection.

Application workflow

When the client connects to the server, the server calls

onAppStart if the application instance

isn’t already running. Next, the server-side

onConnect method is invoked with a newly created

Client object. The logic in this method determines whether to accept or reject the connection.

Back on the client side, the

onStatus method is called to report whether the connection was

accepted or rejected. When the client closes the connection, the server-side

onDisconnect

method is called. When the application is unloaded,

onAppStop is invoked.

Connection flow

SERVER FLOW

onAppStart

new Client object onConnect

acceptConnection

onDisconnect

Application is

unloaded

onAppStop

CLIENT FLOW

connect

onStatus

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MACROMEDIA FLASH COMMUNICATION SERVER MX-SERVER-SIDE COMMUNICATION ACTIONSCRIPT DICTIONARY Specifiche Pagina 105