Early non-functional multicast code.

Change-Id: Id982b40e5e9df4dee037a2e54ed34206930123c9

3 files changed, 108 insertions, 1 deletions

diff --git a/android/sdremote/src/org/libreoffice/impressremote/TestClient.java b/android/sdremote/src/org/libreoffice/impressremote/TestClient.java
index ee8c57b68b96..dc74cd527f65 100644
--- a/android/sdremote/src/org/libreoffice/impressremote/TestClient.java
+++ b/android/sdremote/src/org/libreoffice/impressremote/TestClient.java
@@ -85,7 +85,8 @@ public class TestClient extends Activity {
 			mCommunicationService = ((CommunicationService.CBinder) aService)
 			                .getService();
 			mCommunicationService.connectTo(
-			                CommunicationService.Protocol.NETWORK, "10.0.2.2");
+			                CommunicationService.Protocol.NETWORK,
+			                "192.168.0.18");
 			mCommunicationService.setActivityMessenger(mMessenger);
 			enableButtons(true);
 		}
diff --git a/android/sdremote/src/org/libreoffice/impressremote/communication/CommunicationService.java b/android/sdremote/src/org/libreoffice/impressremote/communication/CommunicationService.java
index 258bff1b26be..e1669cc8497c 100644
--- a/android/sdremote/src/org/libreoffice/impressremote/communication/CommunicationService.java
+++ b/android/sdremote/src/org/libreoffice/impressremote/communication/CommunicationService.java
@@ -55,6 +55,8 @@ public class CommunicationService extends Service {
 	@Override
 	public void onCreate() {
 		// TODO Create a notification (if configured).
+		ServerFinder aFinder = new ServerFinder();
+		aFinder.startFinding();
 	}
 
 	@Override
diff --git a/android/sdremote/src/org/libreoffice/impressremote/communication/ServerFinder.java b/android/sdremote/src/org/libreoffice/impressremote/communication/ServerFinder.java
new file mode 100644
index 000000000000..d787e3478f1c
--- /dev/null
+++ b/android/sdremote/src/org/libreoffice/impressremote/communication/ServerFinder.java
@@ -0,0 +1,104 @@
+package org.libreoffice.impressremote.communication;
+
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.net.SocketException;
+
+public class ServerFinder {
+
+	private static final int PORT = 1598;
+	private static final String CHARSET = "UTF-8";
+
+	private DatagramSocket mSocket = null;
+
+	private Thread mListenerThread = null;
+
+	public ServerFinder() {
+
+	}
+
+	private void listenForServer() {
+		byte[] aBuffer = new byte[500];
+		DatagramPacket aPacket = new DatagramPacket(aBuffer, aBuffer.length);
+
+		try {
+			String aCommand = null;
+			String aAddress = null;
+			System.out.println("SF:listening for packet\n");
+			mSocket.receive(aPacket);
+			System.out.println("SF:received packet\n");
+			int i;
+			for (i = 0; i < aBuffer.length; i++) {
+				if (aPacket.getData()[i] == '\n') {
+					aCommand = new String(aPacket.getData(), 0, i, CHARSET);
+					break;
+				}
+			}
+			if (i == aBuffer.length || !aCommand.equals("LOREMOTE_ADVERTISE")) {
+				return;
+			}
+
+			for (int j = i + 1; j < aBuffer.length; j++) {
+				if (aPacket.getData()[j] == '\n') {
+					aAddress = new String(aPacket.getData(), i + 1, j, CHARSET);
+				}
+			}
+
+			if (aAddress != null) {
+				System.out.println("Address is :" + aAddress + "\n");
+			}
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+
+	}
+
+	public void startFinding() {
+		if (mSocket != null)
+			return;
+
+		if (mListenerThread == null) {
+			mListenerThread = new Thread() {
+				@Override
+				public void run() {
+					try {
+						mSocket = new DatagramSocket();
+						String aString = "LOREMOTE_SEARCH\n";
+						DatagramPacket aPacket = new DatagramPacket(
+						                aString.getBytes(CHARSET),
+						                aString.length(),
+						                InetAddress.getByName("239.0.0.1"),
+						                PORT);
+						mSocket.send(aPacket);
+						System.out.println("SF:sent packet\n");
+						while (true) {
+							listenForServer();
+						}
+					} catch (SocketException e) {
+						// TODO Auto-generated catch block
+						e.printStackTrace();
+					} catch (UnsupportedEncodingException e) {
+						// TODO Auto-generated catch block
+						e.printStackTrace();
+					} catch (IOException e) {
+						// TODO Auto-generated catch block
+						e.printStackTrace();
+					}
+
+				}
+			};
+			mListenerThread.start();
+		}
+
+	}
+
+	public void stopFinding() {
+		if (mListenerThread != null) {
+
+		}
+	}
+}