Programming Flash Communication Server

This is the Title of the Book, eMatter Edition

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

48

|

Chapter 2: Communication Components

methods between client-side and server-side ActionScript. The client-side Connec-

tionLight.connect( ) method issues a call( ) method to the server-side FCConnection-

Light.connect( ) method. The server-side connect( ) method uses the measurement

interval passed in to calculate a ping interval between the FlashCom application and

the Flash movie client. Based on the ping interval, Client.getStats( ) periodically cal-

culates the bandwidth statistic data and sends it to the Flash client via a server-side

Client.call( ) method. This continues until the client disconnects or until the client-

side ConnectionLight.close( ) method is invoked.

Enabling ConnectionLight without SimpleConnect

To use the ConnectionLight component without the help of the SimpleConnect

component, invoke ConnectionLight.connect( ) in your client-side ActionScript. The

following code example invokes the connect( ) method of the ConnectionLight

instance named

connLight_mc when the first onStatus( ) message is received over a

NetConnection object named

app_nc:

var app_nc:NetConnection = new NetConnection( );

app_nc.onStatus = function (info) {

if (info.code == "NetConnection.Connect.Success") {

trace("--successful connection");

}

if (!initConnLight) {

initConnLight = true;

connLight_mc.connect(this);

}

};

app_nc.connect("rtmp:/my_app");

For more on this technique, see “Forgoing the SimpleConnect Component” at the

end of this chapter.

Cursor

The Cursor component provides a visual representation of each connected user’s

mouse position within the Flash movie. The component displays each user’s login

name below a cursor indicating the position of the user’s mouse on stage, as seen in

Figure 2-6. The cursor is also shown in the user’s preferred color when used in con-

junction with the UserColor component, discussed later in this chapter.

Figure 2-6. The Cursor component displays cursor positions for each user