/// <summary>
/// Private constructor used for deserialization.
/// </summary>
private IpPacket(IpVersion version, byte ihl, byte dscp, ushort totalLength,
ushort identification, IpFlag flags, ushort fragmentOffset,
byte ttl, IpProtocol protocol, ushort checksum, IpAddress source,
IpAddress destination)
{
destination.ThrowIfNull("destination");
source.ThrowIfNull("source");
if (ihl > 0x0F)
{
throw new ArgumentException("The Internet Header Length field must " +
"be in the range from 0 to 15.", nameof(ihl));
}
if (fragmentOffset > 0x1FFF)
{
throw new ArgumentException("The Fragment Offset field must be in " +
"the range from 0 to 8191.", nameof(fragmentOffset));
}
Version = version;
Ihl = ihl;
Dscp = dscp;
TotalLength = totalLength;
Identification = identification;
Flags = flags;
FragmentOffset = fragmentOffset;
TimeToLive = ttl;
Protocol = protocol;
Checksum = checksum;
Source = source;
Destination = destination;
Data = new byte[0];
}
/// <summary>
/// Initializes a new instance of the IpPacket class using the specified
/// values.
/// </summary>
/// <param name="destination">The IPv4 address of the destination
/// host.</param>
/// <param name="source">The IPv4 address of the sending host.</param>
/// <param name="type">The type of the transport protocol encapsulated in
/// the IP packet's data section.</param>
/// <param name="fragmentOffset">The fragment offset of the packet.</param>
/// <param name="data">The transport data to transfer as part of the IP
/// packet.</param>
/// <param name="ihl">The Internet Header Length.</param>
/// <param name="dscp">The Differentiated Services Code Point.</param>
/// <param name="ttl">The time-to-live of the IP packet.</param>
/// <param name="identification">The idenfication used for uniquely identifying
/// fragments of a fragmented IP packet.</param>
/// <param name="flags">The flags set on the IP packet.</param>
/// <exception cref="ArgumentNullException">Thrown if any of the arguments
/// is null.</exception>
public IpPacket(IpAddress destination, IpAddress source,
IpProtocol type, byte ihl, byte dscp, byte ttl, ushort identification,
IpFlag flags, ushort fragmentOffset, byte[] data)
{
destination.ThrowIfNull("destination");
source.ThrowIfNull("source");
data.ThrowIfNull("data");
if (ihl > 0x0F)
{
throw new ArgumentException("The Internet Header Length field must " +
"be in the range from 0 to 15.", nameof(ihl));
}
if (fragmentOffset > 0x1FFF)
{
throw new ArgumentException("The Fragment Offset field must be in " +
"the range from 0 to 8191.", nameof(fragmentOffset));
}
Version = IpVersion.Ipv4;
Ihl = ihl;
Dscp = dscp;
Identification = identification;
Flags = flags;
FragmentOffset = fragmentOffset;
TimeToLive = ttl;
Protocol = type;
Source = source;
Destination = destination;
Data = data;
TotalLength = (ushort)(20 + Data.Length);
Checksum = ComputeChecksum(this);
}
/// <summary>
/// Private constructor used for deserialization.
/// </summary>
private IpPacket(IpVersion version, byte ihl, byte dscp, ushort totalLength,
ushort identification, IpFlag flags, ushort fragmentOffset,
byte ttl, IpProtocol protocol, ushort checksum, IpAddress source,
IpAddress destination) {
destination.ThrowIfNull("destination");
source.ThrowIfNull("source");
if (ihl > 0x0F)
throw new ArgumentException("The Internet Header Length field must " +
"be in the range from 0 to 15.", nameof(ihl));
if (fragmentOffset > 0x1FFF)
throw new ArgumentException("The Fragment Offset field must be in " +
"the range from 0 to 8191.", nameof(fragmentOffset));
Version = version;
Ihl = ihl;
Dscp = dscp;
TotalLength = totalLength;
Identification = identification;
Flags = flags;
FragmentOffset = fragmentOffset;
TimeToLive = ttl;
Protocol = protocol;
Checksum = checksum;
Source = source;
Destination = destination;
Data = new byte[0];
}
/// <summary>
/// Initializes a new instance of the IpPacket class using the specified
/// values.
/// </summary>
/// <param name="destination">The IPv4 address of the destination
/// host.</param>
/// <param name="source">The IPv4 address of the sending host.</param>
/// <param name="type">The type of the transport protocol encapsulated in
/// the IP packet's data section.</param>
/// <param name="fragmentOffset">The fragment offset of the packet.</param>
/// <param name="data">The transport data to transfer as part of the IP
/// packet.</param>
/// <param name="ihl">The Internet Header Length.</param>
/// <param name="dscp">The Differentiated Services Code Point.</param>
/// <param name="ttl">The time-to-live of the IP packet.</param>
/// <param name="identification">The idenfication used for uniquely identifying
/// fragments of a fragmented IP packet.</param>
/// <param name="flags">The flags set on the IP packet.</param>
/// <exception cref="ArgumentNullException">Thrown if any of the arguments
/// is null.</exception>
public IpPacket(IpAddress destination, IpAddress source,
IpProtocol type, byte ihl, byte dscp, byte ttl, ushort identification,
IpFlag flags, ushort fragmentOffset, byte[] data) {
destination.ThrowIfNull("destination");
source.ThrowIfNull("source");
data.ThrowIfNull("data");
if (ihl > 0x0F)
throw new ArgumentException("The Internet Header Length field must " +
"be in the range from 0 to 15.", nameof(ihl));
if (fragmentOffset > 0x1FFF)
throw new ArgumentException("The Fragment Offset field must be in " +
"the range from 0 to 8191.", nameof(fragmentOffset));
Version = IpVersion.Ipv4;
Ihl = ihl;
Dscp = dscp;
Identification = identification;
Flags = flags;
FragmentOffset = fragmentOffset;
TimeToLive = ttl;
Protocol = type;
Source = source;
Destination = destination;
Data = data;
TotalLength = (ushort) (20 + Data.Length);
Checksum = ComputeChecksum(this);
}
