diff --git a/src/AsyncSocket.java b/src/AsyncSocket.java
new file mode 100644
index 0000000..e91019d
--- /dev/null
+++ b/src/AsyncSocket.java
@@ -0,0 +1,80 @@
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.net.Socket;
+
+public class AsyncSocket {
+	private Socket socket;
+	private Thread checkerThread;
+	private AsyncSocketListener handler;
+	private boolean shouldStop = false;
+
+	private BufferedReader in;
+	private PrintWriter out;
+
+	public AsyncSocket(Socket socket, AsyncSocketListener handler) throws IOException {
+		this.socket = socket;
+
+		this.in = new BufferedReader(new InputStreamReader(this.socket.getInputStream()));
+		this.out = new PrintWriter(new OutputStreamWriter(this.socket.getOutputStream()));
+
+		this.handler = handler;
+
+		this.checkerThread = new Thread(() -> {
+			while (!this.shouldStop) {
+				try {
+					if (!this.in.ready()) continue;
+					if (this.handler == null) continue;
+
+					String message = this.in.readLine();
+					if (message.length() <= 0) continue;
+
+					this.handler.receive(message);
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+
+				try {
+					Thread.sleep(100);
+				} catch (InterruptedException e) {
+					e.printStackTrace();
+				}
+			}
+		});
+		this.checkerThread.start();
+	}
+
+	public void setHandler(AsyncSocketListener handler) {
+		this.handler = handler;
+	}
+
+
+	public void send(SocketPackage socketPackage) {
+		this.sendLine(socketPackage.toString());
+	}
+	public void send(String packageName) {
+		this.send(packageName, "");
+	}
+	public void send(String packageName, String packageContent) {
+		if (packageContent.length() > 0) {
+			packageContent = " " + packageContent;
+		}
+		this.sendLine(packageName + packageContent);
+	}
+
+	public void sendLine(String message) {
+		this.out.print(message + "\r\n");
+	}
+
+	public void close() {
+		this.shouldStop = true;
+		
+		try {
+			this.socket.close();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+}
\ No newline at end of file
diff --git a/src/AsyncSocketListener.java b/src/AsyncSocketListener.java
new file mode 100644
index 0000000..a8c78ba
--- /dev/null
+++ b/src/AsyncSocketListener.java
@@ -0,0 +1,3 @@
+public interface AsyncSocketListener {
+	public void receive(String message);
+}
\ No newline at end of file
diff --git a/src/GameController.java b/src/GameController.java
index 1d562eb..5b3aa88 100644
--- a/src/GameController.java
+++ b/src/GameController.java
@@ -1,11 +1,45 @@
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.ServerSocket;
+import java.util.Arrays;
+import java.util.HashMap;
+
 public class GameController {
 	
+	// TODO: fix syntax i guess
+	public HashMap<String, Class<? extends OnlinePlayer>> supportedVersions = [{ "1.1.0" : OnlinePlayer_1_1_0.class }];
 
-    public void startOnlineGame() {
-        // fuck you Luca and Ole von Florian und nicht von Florian
-    }
+	public void startOnlineGame(Class<? extends LocalPlayer> localPlayerClass, InetSocketAddress address) {
+		if (address.getHostName() == null) {
+			// SERVER MODE
+			try {
+				ServerSocket serverSocket = new ServerSocket(address.getPort());
 
-    public void startLocalGame(Class<? extends  LocalPlayer> localPlayerClass, Class<? extends AiPlayer> enemyClass, int size) throws InstantiationException, IllegalAccessException {
+				System.out.println("Waiting for client connection...");
+				
+				AsyncSocket clientSocket = new AsyncSocket(serverSocket.accept(), null);
+				clientSocket.send("VERSION", "Gruppe03 1.1.0"); // TODO: adjust versioning list
+				clientSocket.setHandler((message) -> {
+
+					new OnlinePlayer_1_1_0(0, clientSocket);
+
+					try {
+						serverSocket.close();
+					} catch (IOException e) {
+						e.printStackTrace();
+					}
+				});
+
+			} catch (IOException e) {
+				e.printStackTrace();
+				return;
+			}
+		} else {
+			// CLIENT MODE
+		}
+	}
+
+	public void startLocalGame(Class<? extends  LocalPlayer> localPlayerClass, Class<? extends AiPlayer> enemyClass, int size) {
 
 		LocalPlayer localPlayer;
 		AiPlayer aiPlayer;
diff --git a/src/OnlinePlayer.java b/src/OnlinePlayer.java
index 66316d6..f3aaaf8 100644
--- a/src/OnlinePlayer.java
+++ b/src/OnlinePlayer.java
@@ -1,11 +1,12 @@
-import java.net.Socket;
+public abstract class OnlinePlayer extends Player implements AsyncSocketListener{
+    private AsyncSocket socket;
 
-public abstract class OnlinePlayer extends Player{
-    private Socket socket;
-
-    public OnlinePlayer(int size, Socket socket) {
+    public OnlinePlayer(int size, AsyncSocket socket) {
         super(size);
         this.socket = socket;
         //TODO Auto-generated constructor stub
     }
+
+    public abstract void receive(String message);
+
 }
diff --git a/src/OnlinePlayer_1_1_0.java b/src/OnlinePlayer_1_1_0.java
new file mode 100644
index 0000000..916b294
--- /dev/null
+++ b/src/OnlinePlayer_1_1_0.java
@@ -0,0 +1,13 @@
+public class OnlinePlayer_1_1_0 extends OnlinePlayer {
+	public OnlinePlayer_1_1_0(int size, AsyncSocket socket) {
+		super(size, socket);
+	}
+
+	@Override
+	public void receive(String message) {
+		SocketPackage p = new SocketPackage(message);
+
+		// TODO: parse package
+	}
+
+}
\ No newline at end of file
diff --git a/src/SocketPackage.java b/src/SocketPackage.java
new file mode 100644
index 0000000..8f7e6ca
--- /dev/null
+++ b/src/SocketPackage.java
@@ -0,0 +1,55 @@
+import java.util.Arrays;
+import java.util.List;
+public class SocketPackage {
+
+	private String name;
+	private String data;
+
+	public SocketPackage(String name, String data) {
+		this.setName(name);
+		this.setData(data);
+	}
+	public SocketPackage() {
+		this("","");
+	}
+	public SocketPackage(String message) {
+		if (message.length() <= 0) {
+			throw new IllegalArgumentException("Socket message cannot be empty.");
+		}
+		String[] components = message.split(" ");
+		this.setName(components[0]);
+		if (components.length > 1) {
+			this.data = message.substring(components[0].length() + 1);
+		} else {
+			this.data = null;
+		}
+	}
+
+	public void setName(String name) {
+		this.name = name.toUpperCase();
+	}
+
+	public void setData(String data) {
+		this.data = data;
+	}
+
+	public String getName() {
+		return this.name;
+	}
+
+	public String getData() {
+		return this.data;
+	}
+
+	public String toString() {
+		if (this.data == null || this.data.length() == 0) {
+			return this.name;
+		} else {
+			return this.name + " " + this.data;
+		}
+	}
+
+	public List<String> splitData() {
+		return Arrays.asList(this.data.split(" "));
+	}
+}