/// <summary>
/// Create a new security option.
/// </summary>
/// <param name="option">
/// The option to parse.
/// </param>
/// <exception cref="ArgumentNullException">
/// The option argument is null.
/// </exception>
/// <exception cref="ArgumentException">
/// The option argument is not a security option.
/// </exception>
public IpV4SecurityOption(IpV4Option option)
{
if (option == null)
{
throw new ArgumentNullException("option");
}
if (option.OptionType != IpV4OptionNumber.Security)
{
throw new ArgumentException("The option passed was not compatible with this class. This class accepts security options only", "option");
}
// extract the security level field
m_level = (IpV4SecurityLevelType)BitConverter.ToUInt16(option.Data, 0);
// extract the compartment field
m_compartment = BitConverter.ToUInt16(option.Data, 2);
// extract the handling restrictions field
m_handling = BitConverter.ToUInt16(option.Data, 4);
// extract the 24 bits of the transmission control code
m_tcc = (uint)(option.Data[6] << 0x10);
m_tcc |= (uint)(option.Data[7] << 0x08);
m_tcc |= option.Data[8];
}
/// <summary>
/// Create a new security option.
/// </summary>
/// <param name="option">
/// The option to parse.
/// </param>
/// <exception cref="ArgumentNullException">
/// The option argument is null.
/// </exception>
/// <exception cref="ArgumentException">
/// The option argument is not a security option.
/// </exception>
public IpV4SecurityOption (IpV4Option option)
{
if (option == null)
{
throw new ArgumentNullException ("option");
}
if (option.OptionType != IpV4OptionNumber.Security)
{
throw new ArgumentException ("The option passed was not compatible with this class. This class accepts security options only", "option");
}
// extract the security level field
m_level = (IpV4SecurityLevelType) BitConverter.ToUInt16 (option.Data, 0);
// extract the compartment field
m_compartment = BitConverter.ToUInt16 (option.Data, 2);
// extract the handling restrictions field
m_handling = BitConverter.ToUInt16 (option.Data, 4);
// extract the 24 bits of the transmission control code
m_tcc = (uint)(option.Data[6] << 0x10);
m_tcc |= (uint)(option.Data[7] << 0x08);
m_tcc |= option.Data[8];
}
