UDP message send and receive function

MESepehr · MESepehr · commit a220a8e9c0f8 · 2021-12-10T17:52:44.000+03:30
diff --git a/netManager/UDPManager.as b/netManager/UDPManager.as
@@ -0,0 +1,56 @@
+package netManager
+{
+	import flash.net.DatagramSocket;
+	import flash.utils.ByteArray;
+	import flash.events.DatagramSocketDataEvent;
+
+	public class UDPManager
+	{
+		private static var myUDP:DatagramSocket ;
+
+		private static var onReceiveFunction:Function ;
+
+		private static function setUp():void
+		{
+			if(myUDP==null)
+			{
+				myUDP = new DatagramSocket();
+				myUDP.addEventListener(DatagramSocketDataEvent.DATA,onDataReceived);
+			}
+		}
+
+		private static function onDataReceived(e:DatagramSocketDataEvent):void
+		{
+			trace("Message received");
+			var message:String = e.data.toString();
+			if(onReceiveFunction!=null && onReceiveFunction.length>0)
+				onReceiveFunction(message)
+		}
+
+		private static function getMessageOnPort(onRespond:Function,myPort:uint=43243):void
+		{
+			trace("myUDP.connected : "+myUDP.connected);
+			trace("myUDP.localPort : " +myUDP.localPort);
+			onReceiveFunction = onRespond ;
+			if(myUDP.localPort==0 || ( myUDP.localPort!=myPort && myPort!=43243))
+			{
+				if(myUDP.connected)
+					myUDP.close();
+				
+				myUDP.bind(myPort);
+				myUDP.receive();
+			}
+		}
+
+		public static function sendMessageTo(message:String,onRespond:Function,targetIp:String,targetPort:uint):void
+		{
+			setUp();
+			trace("Message sent:"+message);
+			getMessageOnPort(onRespond);
+			var data:ByteArray = new ByteArray();
+			data.writeUTFBytes(message);
+			myUDP.send(data,0,0,targetIp,targetPort);
+			myUDP.receive();
+		}
+	}
+}
