static Packet createDataPacket(
MacAddress srcAddress_mac,
MacAddress dstAddrress_mac,
Inet4Address srcAddress, short srcPort,
Inet4Address dstAddress, short dstPort,
int sequence, int ack, byte[] data, short ident)
{
Packet p = null;
TcpPacket.Builder builder_tcp = new TcpPacket.Builder();
builder_tcp.payloadBuilder(new UnknownPacket.Builder().rawData(data));
builder_tcp.correctChecksumAtBuild(true);
builder_tcp.correctLengthAtBuild(true);
builder_tcp.paddingAtBuild(true);
builder_tcp.ack(true);
builder_tcp.acknowledgmentNumber(ack);
//builder_tcp.checksum(tcpHeader.getChecksum());
//builder_tcp.dataOffset((byte)8);
builder_tcp.dstAddr(dstAddress);
builder_tcp.dstPort(new TcpPort(dstPort, ""));
builder_tcp.fin(false);
//builder_tcp.options(tcpHeader.getOptions());
//builder_tcp.padding(tcpHeader.getPadding());
builder_tcp.psh(false);
builder_tcp.reserved((byte)0);
builder_tcp.rst(false);
builder_tcp.sequenceNumber(sequence);
builder_tcp.srcAddr(srcAddress);
builder_tcp.srcPort(new TcpPort(srcPort, ""));
builder_tcp.syn(false);
builder_tcp.urg(false);
//builder_tcp.urgentPointer(tcpHeader.getUrgentPointer());
builder_tcp.window(window);
IpV4Packet.Builder builder_ipv4 = new IpV4Packet.Builder();
builder_ipv4.correctChecksumAtBuild(true);
builder_ipv4.correctLengthAtBuild(true);
builder_ipv4.dontFragmentFlag(true);
builder_ipv4.paddingAtBuild(true);
builder_ipv4.dstAddr(dstAddress);
builder_ipv4.fragmentOffset((short)0);
//builder_ipv4.headerChecksum(ipV4Header.getHeaderChecksum());
//short identification= Math.abs(random.nextInt(Short.MAX_VALUE));
//identification=ident;
builder_ipv4.identification(ident);
builder_ipv4.ihl((byte)5);
builder_ipv4.moreFragmentFlag(false);
//builder_ipv4.options(ipV4Header.getOptions());
//builder_ipv4.padding(ipV4Header.getPadding());
builder_ipv4.protocol(IpNumber.TCP);
//builder_ipv4.reservedFlag(ipV4Header.getReservedFlag());
builder_ipv4.srcAddr(srcAddress);
builder_ipv4.tos(IpV4Rfc1349Tos.newInstance((byte)0));
//builder_ipv4.totalLength( 52);
builder_ipv4.ttl(ttl);
builder_ipv4.version(IpVersion.IPV4);
builder_ipv4.payloadBuilder(builder_tcp);
p = buildIpV4(srcAddress_mac, dstAddrress_mac, builder_ipv4);
return(p);
}