/// <summary>
/// Compare two IpAddress classes
/// </summary>
/// <param name="other">IpAddress class to compare with</param>
/// <returns>0 if classes are the same, -1 if current class is less then or 1 if greater then the class
/// we are comparing against.</returns>
public int CompareTo(IpAddress other)
{
byte[] b = other.GetData();
if (_data == null)
{
return(-1);
}
if (b.Length != _data.Length)
{
if (_data.Length < b.Length)
{
return(-1);
}
else
{
return(1);
}
}
else
{
for (int i = 0; i < _data.Length; i++)
{
if (_data[i] < b[i])
{
return(-1);
}
else if (_data[i] > b[i])
{
return(1);
}
}
return(0);
}
}
/// <summary>
/// Returns broadcast address for the objects IP and supplied subnet mask.
///
/// Subnet mask validity is not confirmed before performing the new value calculation so
/// you should make sure parameter is a valid subnet mask by using <see cref="IpAddress.IsValidMask"/>
/// method.
///
/// Broadcast address is calculated by changing every bit in the subnet mask that is set to
/// value 0 into 1 in the address value.
/// </summary>
/// <param name="mask">Subnet mask to apply to the object</param>
/// <returns>New IP address containing broadcast address</returns>
public IpAddress GetBroadcastAddress(IpAddress mask)
{
IpAddress im = mask.Invert();
byte[] ip = _data;
byte[] m = im.GetData();
byte[] res = new byte[4];
for (int i = 0; i < 4; i++)
{
res[i] = (byte)(ip[i] | m[i]);
}
return(new IpAddress(res));
}
/// <summary> Copy constructor. Constructs a duplicate object
/// based on the passed application string object.
/// </summary>
/// <param name="second">The object to copy.</param>
/// <exception cref="ArgumentException">IpAddress argument is null</exception>
public IpAddress(IpAddress second) : this()
{
if (second == null)
{
throw new ArgumentException("Constructor argument cannot be null.");
}
if (!second.Valid)
{
_data = new byte[] { 0, 0, 0, 0 };
}
else
{
Set(second.GetData());
}
}
/// <summary> Copy constructor. Constructs a duplicate object
/// based on the passed application string object.
/// </summary>
/// <param name="second">The object to copy.</param>
/// <exception cref="ArgumentException">IpAddress argument is null</exception>
public IpAddress(IpAddress second)
: this()
{
if( second == null )
throw new ArgumentException("Constructor argument cannot be null.");
if (!second.Valid)
{
_data = new byte[] { 0, 0, 0, 0 };
}
else
{
Set(second.GetData());
}
}
