/// <summary>
/// Create a new time stamp 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 timestamp option.
/// </exception>
public IpV4TimeStampOption(IpV4Option option)
{
if (option == null)
{
throw new ArgumentNullException("option");
}
if (option.OptionType != IpV4OptionNumber.InternetTimestamp)
{
throw new ArgumentException("The option passed was not compatible with this class. This class accepts timestamp options only", "option");
}
// extract the pointer
m_pointer = (byte)option.Data[0];
// extract the overflow field
m_overflow = (byte)((option.Data[1] & 0xf0) >> 4);
// extract the type
m_type = (IpV4TimestampType)(option.Data[1] & 0xf);
// calculate how many fields there are and allocate space
int numberStamps = (option.Data.Length - 2) / 4;
if (m_type == IpV4TimestampType.TimestampAndAddress)
{
numberStamps /= 2;
m_addressstamps = new IPAddress[numberStamps];
}
m_timestamps = new uint[numberStamps];
// extract the time stamps and addresses
for (int i = 0; i < numberStamps; i++)
{
if (m_type == IpV4TimestampType.TimestampAndAddress)
{
uint address = BitConverter.ToUInt32(option.Data, (i * 8) + 2);
m_addressstamps[i] = new IPAddress((long)address);
m_timestamps[i] = BitConverter.ToUInt32(option.Data, (i * 8) + 6);
}
else
{
m_timestamps[i] = BitConverter.ToUInt32(option.Data, (i * 4) + 2);
}
}
}
/// <summary>
/// Create a new time stamp 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 timestamp option.
/// </exception>
public IpV4TimeStampOption (IpV4Option option)
{
if (option == null)
{
throw new ArgumentNullException ("option");
}
if (option.OptionType != IpV4OptionNumber.InternetTimestamp)
{
throw new ArgumentException ("The option passed was not compatible with this class. This class accepts timestamp options only", "option");
}
// extract the pointer
m_pointer = (byte)option.Data[0];
// extract the overflow field
m_overflow = (byte)((option.Data[1] & 0xf0) >> 4);
// extract the type
m_type = (IpV4TimestampType)(option.Data[1] & 0xf);
// calculate how many fields there are and allocate space
int numberStamps = (option.Data.Length - 2) / 4;
if (m_type == IpV4TimestampType.TimestampAndAddress)
{
numberStamps /= 2;
m_addressstamps = new IPAddress[numberStamps];
}
m_timestamps = new uint[numberStamps];
// extract the time stamps and addresses
for (int i = 0; i < numberStamps; i++)
{
if (m_type == IpV4TimestampType.TimestampAndAddress)
{
uint address = BitConverter.ToUInt32 (option.Data, (i * 8) + 2);
m_addressstamps[i] = new IPAddress ((long)address);
m_timestamps[i] = BitConverter.ToUInt32 (option.Data, (i * 8) + 6);
}
else
{
m_timestamps[i] = BitConverter.ToUInt32 (option.Data, (i * 4) + 2);
}
}
}
