ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Sockets
Server sockets
Adobe AIR 2 and later
Use the ServerSocket class to allow other processes to connect to your application using a Transport Control Protocol
(TCP) socket. The connecting process can be running on the local computer or on another network-connected
computer. When a ServerSocket object receives a connection request, it dispatches a connect event. The
ServerSocketConnectEvent object dispatched with the event contains a Socket object. You can use this Socket object
for subsequent communication with the other process.
To listen for incoming socket connections:
1 Create a ServerSocket object and bind it to a local port
2 Add event listeners for the connect event
3 Call the listen() method
4 Respond to the connect event, which provides a Socket object for each incoming connection
The ServerSocket object continues to listen for new connections until you call the close() method.
The following code example illustrates how to create a socket server application. The example listens for incoming
connections on port 8087. When a connection is received, the example sends a message (the string “Connected.”) to
the client socket. Thereafter, the server echoes any messages received back to the client.
package
{
import flash.display.Sprite;
import flash.events.Event;
import flash.events.IOErrorEvent;
import flash.events.ProgressEvent;
import flash.events.ServerSocketConnectEvent;
import flash.net.ServerSocket;
import flash.net.Socket;
public class ServerSocketExample extends Sprite
{
private var serverSocket:ServerSocket;
private var clientSockets:Array = new Array();
public function ServerSocketExample()
{
try
{
// Create the server socket
serverSocket = new ServerSocket();
// Add the event listener
serverSocket.addEventListener( Event.CONNECT, connectHandler );
serverSocket.addEventListener( Event.CLOSE, onClose );
// Bind to local port 8087
serverSocket.bind( 8087, "127.0.0.1" );
// Listen for connections
serverSocket.listen();
trace( "Listening on " + serverSocket.localPort );
Last updated 6/6/2012
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