/// <summary>
/// Constructor
/// </summary>
/// <param name="bas">
/// A <see cref="ByteArraySegment"/>
/// </param>
public IPv4Packet(ByteArraySegment bas)
{
log.Debug("");
header = new ByteArraySegment(bas);
// TOS? See http://en.wikipedia.org/wiki/TCP_offload_engine
if (TotalLength == 0)
{
TotalLength = header.Length;
}
// Check that the TotalLength is valid, at least HeaderMinimumLength long
if (TotalLength < HeaderMinimumLength)
{
throw new System.InvalidOperationException("TotalLength " + TotalLength + " < HeaderMinimumLength " + HeaderMinimumLength);
}
// update the header length with the correct value
// NOTE: we take care to convert from 32bit words into bytes
// NOTE: we do this *after* setting header because we need header to be valid
// before we can retrieve the HeaderLength property
header.Length = HeaderLength * 4;
log.DebugFormat("IPv4Packet HeaderLength {0}", HeaderLength);
log.DebugFormat("header {0}", header);
// parse the payload
var payload = header.EncapsulatedBytes(PayloadLength);
payloadPacketOrData = IpPacket.ParseEncapsulatedBytes(payload,
NextHeader,
this);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="bas">
/// A <see cref="ByteArraySegment"/>
/// </param>
public IPv4Packet(ByteArraySegment bas)
{
log.Debug("");
header = new ByteArraySegment(bas);
RandomUtils.EnsurePacketLength(this, IPv4Fields.HeaderLength, header.Length);
// TOS? See http://en.wikipedia.org/wiki/TCP_offload_engine
if (TotalLength == 0)
{
TotalLength = header.Length;
}
// update the header length with the correct value
// NOTE: we take care to convert from 32bit words into bytes
// NOTE: we do this *after* setting header because we need header to be valid
// before we can retrieve the HeaderLength property
RandomUtils.EnsurePacketLength(this, HeaderLength * 4, header.Length);
header.Length = HeaderLength * 4;
log.DebugFormat("IPv4Packet HeaderLength {0}", HeaderLength);
log.DebugFormat("header {0}", header);
// parse the payload
var payload = header.EncapsulatedBytes(PayloadLength);
payloadPacketOrData = IpPacket.ParseEncapsulatedBytes(payload,
NextHeader,
this);
}
private void sendPackage(PacketDotNet.Packet udpPacket)
{
foreach (PcapDevice device in SharpPcap.CaptureDeviceList.Instance)
{
PacketDotNet.Packet p = udpPacket;// = new PacketDotNet.UdpPacket();//
PacketDotNet.IpPacket packageip = (PacketDotNet.IpPacket)udpPacket;
//p.EthernetProtocol = EthernetProtocols_Fields.IP;
//p.IPVersion = IPVersions_Fields.IPV4;
//p.IPProtocol = IPProtocols_Fields.UDP;//
//p.TimeToLive = 2;//
//p.IPHeaderLength = IPFields_Fields.IP_HEADER_LEN;//
//p.Length = 60;//
//p.SourceHwAddress = strSouMac;
//p.DestinationHwAddress = strGateWayMac;
//p.SourceAddress = "201.23.12.88";
//p.SourcePort = 12345;
//p.DestinationAddress = "192.168.100.106";
//p.DestinationPort = 9000;
//p.ComputeIPChecksum(true);//
//p.ComputeUDPChecksum(true);
p.PayloadPacket.PayloadPacket.PayloadData[0] = 0x10;
p.PayloadPacket.PayloadPacket.UpdateCalculatedValues();
device.SendPacket(p.Bytes);
}
}
public IPv4Packet(byte[] Bytes, int Offset, PosixTimeval Timeval) : base(Timeval)
{
base.header = new ByteArraySegment(Bytes, Offset, Bytes.Length - Offset);
if (this.TotalLength < 20)
{
object[] objArray1 = new object[] { "TotalLength ", this.TotalLength, " < HeaderMinimumLength ", 20 };
throw new InvalidOperationException(string.Concat(objArray1));
}
base.header.Length = this.HeaderLength * 4;
base.payloadPacketOrData = IpPacket.ParseEncapsulatedBytes(base.header, this.NextHeader, Timeval, this);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="bas">
/// A <see cref="ByteArraySegment"/>
/// </param>
public IPv6Packet(ByteArraySegment bas)
{
// slice off the header
header = new ByteArraySegment(bas);
header.Length = IPv6Packet.HeaderMinimumLength;
// set the actual length, we need to do this because we need to set
// header to something valid above before we can retrieve the PayloadLength
header.Length = bas.Length - PayloadLength;
// parse the payload
var payload = header.EncapsulatedBytes(PayloadLength);
payloadPacketOrData = IpPacket.ParseEncapsulatedBytes(payload,
NextHeader,
this);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="bas">
/// A <see cref="ByteArraySegment"/>
/// </param>
public IPv6Packet(ByteArraySegment bas)
{
log.Debug(bas.ToString());
// slice off the header
header = new ByteArraySegment(bas);
RandomUtils.EnsurePacketLength(this, IPv6Fields.HeaderLength, header.Length);
header.Length = IPv6Packet.HeaderMinimumLength;
// set the actual length, we need to do this because we need to set
// header to something valid above before we can retrieve the PayloadLength
log.DebugFormat("PayloadLength: {0}", PayloadLength);
RandomUtils.EnsurePacketLength(this, IPv6Packet.HeaderMinimumLength, bas.Length - PayloadLength);
header.Length = bas.Length - PayloadLength;
// parse the payload
var payload = header.EncapsulatedBytes(PayloadLength);
payloadPacketOrData = IpPacket.ParseEncapsulatedBytes(payload,
NextHeader,
this);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="bas">
/// A <see cref="ByteArraySegment"/>
/// </param>
public IPv4Packet(ByteArraySegment bas)
{
header = new ByteArraySegment(bas);
// Check that the TotalLength is valid, at least HeaderMinimumLength long
if (TotalLength < HeaderMinimumLength)
{
throw new System.InvalidOperationException("TotalLength " + TotalLength + " < HeaderMinimumLength " + HeaderMinimumLength);
}
// update the header length with the correct value
// NOTE: we take care to convert from 32bit words into bytes
// NOTE: we do this *after* setting header because we need header to be valid
// before we can retrieve the HeaderLength property
header.Length = HeaderLength * 4;
// parse the payload
var payload = header.EncapsulatedBytes(PayloadLength);
payloadPacketOrData = IpPacket.ParseEncapsulatedBytes(payload,
NextHeader,
this);
}
public IPv6Packet(byte[] Bytes, int Offset, PosixTimeval Timeval) : base(Timeval)
{
base.header = new ByteArraySegment(Bytes, Offset, 40);
base.header.Length = (Bytes.Length - Offset) - this.PayloadLength;
base.payloadPacketOrData = IpPacket.ParseEncapsulatedBytes(base.header, this.NextHeader, Timeval, this);
}
