Fixed Network While loops

- Removed while blocking loops and replaced them with return statements
#story[782]

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

@@ -148,16 +148,15 @@ public class VisualiserInput implements Runnable
      * @throws IOException made by the inputstream reading
      */
      private static byte[] getBytes(InputStream inStream) throws IOException {
-         while (inStream.available() < 15){
-             //WE NEED THIS!!!!
-         }
+         if (inStream.available() < 15) return null;//if there is not enough bytes foer the headerr
          byte[] headerBytes = new byte[15];
          inStream.read(headerBytes);
          byte[] messageLenBytes = Arrays.copyOfRange(headerBytes, 13, 15);
          short messageLen = bytesToShort(messageLenBytes);
          byte[] messageBytesWithCRC = new byte[messageLen+4];
-         while (inStream.available() < messageLen + 4){
-            //WE NEED THIS!!!!
+         if (inStream.available() < messageLen + 4){//if the message is not long enough
+            inStream.reset();//reset pointer.
+            return null;
          }
          inStream.read(messageBytesWithCRC, 0, messageLen + 4);
          ByteBuffer binaryMessageBytes = ByteBuffer.allocate(headerBytes.length+messageBytesWithCRC.length);
@@ -176,6 +175,10 @@ public class VisualiserInput implements Runnable
 
                  //converts the input into a byte array that can be read by the decoder
                  byte[] binaryMessage = getBytes(inFromClient);
+                 //if there is no bytes read.
+                 if (binaryMessage == null){
+                     continue;
+                 }
 
                  //decode the binary message into readable date
                  BinaryMessageDecoder testDecoder = new BinaryMessageDecoder(binaryMessage);