public void testT011ReceivedTcpHeaderChecksum() {
TCP tcp = null;
try {
tcp = new TCP(1);
} catch (IOException e) {
Assert.fail("Exception during creation of TCP: " + e.getMessage());
}
// hexString copied from wireshark (empty ACK package) from specific source/destination IP
String hexString = "dd810050334b9c1f38e0f8b65010ff37c4d20000";
IpAddress sourceIp = IpAddress.getAddress("192.168.1.12");
IpAddress destinationIp = IpAddress.getAddress("65.55.10.11");
byte[] tcpData = hexStringToByteArray(hexString);
TcpPacket tcpPacket =
tcp
.new TcpPacket(sourceIp.getAddress(), destinationIp.getAddress(), tcpData, tcpData.length);
assertTrue(tcpPacket.isACK_Flag());
assertFalse(tcpPacket.isFIN_Flag());
assertFalse(tcpPacket.isPSH_Flag());
assertFalse(tcpPacket.isSYN_Flag());
assertTrue(tcpPacket.verifyChecksum());
}
