/**
  * Test ip encodings
  *
  * @throws UnknownHostException
  */
 public void testIPencoding() throws UnknownHostException {
   InetAddress srcIP = InetAddress.getByName("172.17.152.122");
   InetAddress destIP = InetAddress.getByName("172.17.152.124");
   assertEquals(
       "src ip encoding",
       " 172.17.152.122",
       new String(ReliableTransportMessage.leftPaddedIP(srcIP, 15)));
   assertEquals(
       "dest ip encoding",
       " 172.17.152.124",
       new String(ReliableTransportMessage.leftPaddedIP(destIP, 15)));
 }