Programming Flash Communication Server

This is the Title of the Book, eMatter Edition

Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.

Using Flash Remoting to Log Events

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// Define a client method that simply returns an array of connected users.

// Write a log event each time the method is called.

Client.prototype.getUserList = function ( ) (

this.logger.log("get_user_list", "Client requested user list.",

{client: this.username, ip: this.ip});

return application.clients;

};

The application code is fairly straightforward and doesn’t require much additional

explanation. It creates PFCSLogger instances—one as a property of the

application

object and one as a property of each connected client. The application logger logs

events when the application starts and stops. Additionally, and simply for testing

purposes, the application uses setInterval( ) to log poll events once per minute. The

client logger logs events when clients connect, disconnect, or call the getUserList( )

method.

Creating the Flash Client

In order to test the application and the loggers, you next need to create a Flash movie

to serve as the client. The client is very simple. It should contain two component

instances—a Button component named

cbt and a List component named user_list.

Create a file named loggerClient.fla, add the two components using the Components

panel, and give them instance names using the Properties panel. Then, rename the

first layer to Actions and add the following ActionScript code to the first frame of the

layer on the main timeline:

// Define a response object to handle responses from FlashCom client method calls.

var response = new Object( );

response.onResult = function (data) {

// When an array of users is returned, assign it to the data provider of the list.

user_list.dataProvider = data;

};

// Define a listener object to handle click events dispatched by the button.

var listener = new Object( );

// When a user clicks the button, call FlashCom application's getUserList( ) method.

listener.click = function ( ) (

nc.call("getUserList", response);

};

// Register the listener object with the button.

cbt.addEventListener("click", listener);

// Create the NetConnection.

var nc = new NetConnection( );

// Connect to the application with a username of “some_user”.

nc.connect("rtmp:/fcs_log", "some_user");