Created AC35 Streaming server

- Sends heartbeat messages every 5 seconds
- Sends XML at beginning

Tags: #story[29]

src/main/java/seng302/server/messages/Message.java

@@ -0,0 +1,31 @@
+package seng302.server.messages;
+
+import java.io.DataOutputStream;
+
+public abstract class Message {
+    Header header;
+
+    /**
+     * @param header Set the header for this message
+     */
+    public void setHeader(Header header){
+        this.header = header;
+    }
+
+    /**
+     * @return the header specified for this message
+     */
+    public Header getHeader(){
+        return header;
+    }
+
+    /**
+     * @return the size of the message
+     */
+    public abstract int getSize();
+
+    /**
+     * Send the message as through the outputStream
+     */
+    public abstract void send(DataOutputStream outputStream);
+}