Wake on LAN support. Many fixes for Limelight Android 2.5.

moonlight-common/src/com/limelight/nvstream/wol/WakeOnLanSender.java

@@ -0,0 +1,72 @@
+package com.limelight.nvstream.wol;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.util.Scanner;
+
+import com.limelight.nvstream.http.ComputerDetails;
+
+public class WakeOnLanSender {
+	private static final int[] PORTS_TO_TRY = new int[] {
+		7, 9, // Standard WOL ports
+		47998, 47999, 48000 // Ports opened by GFE
+	};
+	
+	public static void sendWolPacket(ComputerDetails computer) throws IOException {
+		DatagramSocket sock = new DatagramSocket(0);
+		
+		byte[] payload = createWolPayload(computer);
+		// Try both remote and local addresses
+		for (int i = 0; i < 2; i++) {
+			InetAddress addr;
+			if (i == 0) {
+				addr = computer.localIp;
+			}
+			else {
+				addr = computer.remoteIp;
+			}
+			
+			// Try all the ports for each address
+			for (int port : PORTS_TO_TRY) {
+				DatagramPacket dp = new DatagramPacket(payload, payload.length);
+				dp.setAddress(addr);
+				dp.setPort(port);
+				sock.send(dp);
+			}
+		}
+		
+		sock.close();
+	}
+	
+	private static byte[] macStringToBytes(String macAddress) {
+		byte[] macBytes = new byte[6];
+		@SuppressWarnings("resource")
+		Scanner scan = new Scanner(macAddress).useDelimiter(":");
+		for (int i = 0; i < macBytes.length && scan.hasNext(); i++) {
+			macBytes[i] = (byte) Integer.parseInt(scan.next(), 16);
+		}
+		scan.close();
+		return macBytes;
+	}
+	
+	private static byte[] createWolPayload(ComputerDetails computer) {
+		byte[] payload = new byte[102];
+		byte[] macAddress = macStringToBytes(computer.macAddress);
+		int i;
+		
+		// 6 bytes of FF
+		for (i = 0; i < 6; i++) {
+			payload[i] = (byte)0xFF;
+		}
+		
+		// 16 repetitions of the MAC address
+		for (int j = 0; j < 16; j++) {
+			System.arraycopy(macAddress, 0, payload, i, macAddress.length);
+			i += macAddress.length;
+		}
+		
+		return payload;
+	}
+}