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Application Development Tips and Tricks 53

On the server side

On the server side, you must implement slightly different code, using

global instead of _root.

Here, assume you want to include a file called my_file.asc.

if (global._my_file_asc == null) {

global._my_file_asc = true;

// All the code for myfile.asc goes here

}

Also, instead of using the #include command, the server-side script uses a load command:

load("my_file.asc");

Using unique instance names

A typical deployment environment consists of multiple users connecting to the same server at the

same time. To avoid collisions such as streams getting crossed or shared objects being overwritten,

use unique instance names in your

NetConnection.connect commands. This technique is

discussed in detail elsewhere in this manual (see “Applications and application instances” on page

14). It is included here as a reminder of how important this is to Flash Communication Server

application development.

Adding the NetConnection debugger file

Get in the habit of including the NetConnection debugger file in the first line of your client-side

source code. Adding the following ActionScript to your FLA file allows you to view important

details about your network connection to the server.

#include "NetDebug.as"

Forcing the Player Settings panel to appear

When an application tries to access the user’s camera or microphone, or to save data on the client

machine, the Flash Player displays the Player Settings dialog boxes to get permission. The user can

also open the Player Settings panels by right-clicking (Windows) or Control-clicking (Macintosh)

on the player Stage. If you want to force the Player Settings panels to appear, use the following

code:

// Opens the panel the user viewed last

System.ShowSettings();

// Opens the Privacy panel

System.ShowSettings(0);

// Opens the Local Storage panel

System.ShowSettings(1);

// Opens the Microphone panel

System.ShowSettings(2);

// Opens the Camera panel

System.ShowSettings(3);

For example, if your application requires the use of a camera, you can inform the user that they

must choose “Allow” in the Privacy Settings panel, and then issue a

System.showSettings(0)

command. (Make sure your Stage size is at least 215 by 138 pixels; this is the minimum size Flash

requires to display the panel.) For more information, see

System.showSettings in the Client-

Side Communication ActionScript Dictionary.

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