Added blocking loop to wait

- waits for the InputStream to be populated for at least 15 bytes of size before reading in case of header size error potentially crashing the program.
#story[782]

visualiser/src/main/java/seng302/Model/RaceClock.java

@@ -55,6 +55,24 @@ public class RaceClock {
         this.lastTime = System.currentTimeMillis();
     }
 
+    /**
+     * Sets time to given UTC time in seconds from Unix epoch, preserving timezone.
+     * @param time UTC time
+     */
+    public void setUTCTime(long time) {
+        Date utcTime = new Date(time);
+        setTime(utcTime.toInstant().atZone(this.zoneId));
+    }
+
+    /**
+     * Get ZonedDateTime corresponding to local time zone and given UTC time.
+     * @param time
+     */
+    public ZonedDateTime getLocalTime(long time) {
+        Date utcTime = new Date(time);
+        return utcTime.toInstant().atZone(this.zoneId);
+    }
+
     /**
      * Updates time by duration elapsed since last update.
      */
@@ -68,6 +86,10 @@ public class RaceClock {
         return zoneId.toString();
     }
 
+    public ZonedDateTime getTime() {
+        return time;
+    }
+
     public StringProperty timeStringProperty() {
         return timeString;
     }

visualiser/src/main/java/seng302/VisualiserInput.java

@@ -148,6 +148,9 @@ public class VisualiserInput implements Runnable
      * @throws IOException
      */
      private static byte[] getBytes(InputStream inStream) throws IOException {
+         while (inStream.available() < 15){
+             //WE NEED THIS!!!!
+         }
          byte[] headerBytes = new byte[15];
          inStream.read(headerBytes);
          byte[] messageLenBytes = Arrays.copyOfRange(headerBytes, 13, 15);