Programming Flash Communication Server

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Chapter 2: Communication Components

the new updates, instructing them to change capture attributes of the Camera and/or

Microphone object.

The SetBandwidth component also sends these changes to the FlashCom applica-

tion. When the server-side FCSetBandwidth component receives updates, it invokes

Client.setBandwidthLimit( ) to restrict the bandwidth for streams managed by the

server. Note that this method controls both the bandwidth to the client from the

server and the bandwidth from the client to the server. The server changes override

any settings established by client-side ActionScript code.

SimpleConnect

The SimpleConnect component establishes the primary connection to a FlashCom

application from a Flash movie client. As you have undoubtedly gathered, other

communication components often use the connection established by the SimpleCon-

nect component to communicate with a FlashCom application. As its name implies,

this component is very simple to use from both authoring and runtime viewpoints.

At runtime, this component displays a username field and a Login button, as shown

in Figure 2-13.

The user types his name into the text field and clicks the Login button. When the

component successfully establishes a connection to the FlashCom application, it

passes its NetConnection object to other communication components (or your own

custom objects).

Nested Flash UI components

The SimpleConnect component uses the Flash MX UI component PushButton. You

can alter the look of this component by changing the appropriate skin symbol in the

Component Skins folder within the Flash document’s Library panel.

Client-side component parameters

An instance of the SimpleConnect component has two settings in the Properties

panel or Component Parameters panel:

Application Directory

The path of the FlashCom Server and application to which the component con-

nects. This value is an RTMP URI, starting with the string “rtmp:”. You can use

a relative RTMP URI that omits the server’s domain name if the FlashCom

Server coexists on the same IP address or domain as your web server. For exam-

ple, rtmp:/chat tells the SimpleConnect component to connect to the chat

Figure 2-13. The SimpleConnect component interface