Assert.assertTrue(destinationAddress[3] == 110);
}
+ @Test
+ public void testOptions() throws Exception {
+ IPv4 ip = new IPv4();
+ Assert.assertEquals(20, ip.getHeaderLen());
+ Assert.assertEquals(160, ip.getHeaderSize());
+ Assert.assertEquals(0, ip.getfieldnumBits("Options"));
+
+ byte[][] options = {
+ new byte[] {
+ (byte)0x01,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03, (byte)0x04,
+ },
+ null,
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03, (byte)0x04,
+ (byte)0x05,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03, (byte)0x04,
+ (byte)0x05, (byte)0x06,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03, (byte)0x04,
+ (byte)0x05, (byte)0x06, (byte)0x07,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03, (byte)0x04,
+ (byte)0x05, (byte)0x06, (byte)0x07, (byte)0x08,
+ },
+ new byte[0],
+ };
+
+ byte[][] expected = {
+ new byte[] {
+ (byte)0x01, (byte)0x00, (byte)0x00, (byte)0x00,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x00, (byte)0x00,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03, (byte)0x00,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03, (byte)0x04,
+ },
+ null,
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03, (byte)0x04,
+ (byte)0x05, (byte)0x00, (byte)0x00, (byte)0x00,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03, (byte)0x04,
+ (byte)0x05, (byte)0x06, (byte)0x00, (byte)0x00,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03, (byte)0x04,
+ (byte)0x05, (byte)0x06, (byte)0x07, (byte)0x00,
+ },
+ new byte[] {
+ (byte)0x01, (byte)0x02, (byte)0x03, (byte)0x04,
+ (byte)0x05, (byte)0x06, (byte)0x07, (byte)0x08,
+ },
+ null,
+ };
+
+ byte[] echo = {
+ (byte)0x11, (byte)0x22, (byte)0x33, (byte)0x44,
+ (byte)0x55, (byte)0x66, (byte)0x77, (byte)0x88,
+ (byte)0x99, (byte)0xaa,
+ };
+ ICMP icmp = new ICMP();
+ icmp.setType((byte)8);
+ icmp.setCode((byte)0);
+ icmp.setIdentifier((short)0xabcd);
+ icmp.setSequenceNumber((short)7777);
+ icmp.setRawPayload(echo);
+
+ ip.setSourceAddress(InetAddress.getByName("192.168.10.20"));
+ ip.setDestinationAddress(InetAddress.getByName("192.168.30.40"));
+ ip.setProtocol(IPProtocols.ICMP.byteValue());
+
+ for (int i = 0; i < options.length; i++) {
+ byte[] opts = options[i];
+ byte[] exp = expected[i];
+
+ // Set IPv4 options.
+ int hlen = 20;
+ int optlen;
+ if (exp != null) {
+ optlen = exp.length;
+ hlen += optlen;
+ } else {
+ optlen = 0;
+ }
+ ip.setOptions(opts);
+ Assert.assertTrue(Arrays.equals(exp, ip.getOptions()));
+ Assert.assertEquals(hlen, ip.getHeaderLen());
+ Assert.assertEquals(hlen * 8, ip.getHeaderSize());
+ Assert.assertEquals(optlen * 8, ip.getfieldnumBits("Options"));
+
+ // Serialize/Deserialize test.
+ ip.setPayload(icmp);
+
+ byte[] raw = ip.serialize();
+ IPv4 newip = new IPv4();
+ newip.deserialize(raw, 0, raw.length * 8);
+ Assert.assertEquals(ip, newip);
+ Assert.assertEquals(icmp, newip.getPayload());
+ Assert.assertTrue(Arrays.equals(exp, newip.getOptions()));
+ }
+ }
+
@Test
public void testChecksum() {
byte header[] = { (byte) 0x45, 00, 00, (byte) 0x3c, (byte) 0x1c,