static protected Task SerializeUInt8(Stream stream, DHCPOptionType optionType, byte value)
{
var buffer = new byte[] {
Convert.ToByte(optionType),
1,
value
};
return(stream.WriteAsync(buffer, 0, buffer.Length));
}
protected Task SerializeBytes(Stream stream, DHCPOptionType optionType, byte[] value)
{
var buffer = new byte[2 + value.Length];
buffer[0] = Convert.ToByte(optionType);
buffer[1] = Convert.ToByte(2 + value.Length);
Array.Copy(value, 0, buffer, 2, value.Length);
return(stream.WriteAsync(buffer, 0, buffer.Length));
}
static protected Task SerializeInt32(Stream stream, DHCPOptionType optionType, Int32 value)
{
var buffer = new byte[] {
Convert.ToByte(optionType),
4,
0, 0, 0, 0
};
WriteInt32(value, ref buffer, 2);
return(stream.WriteAsync(buffer, 0, buffer.Length));
}
static protected Task SerializeASCII(Stream stream, DHCPOptionType optionType, string value)
{
var buffer = new byte[2 + value.Length];
buffer[0] = Convert.ToByte(optionType);
buffer[1] = Convert.ToByte(value.Length);
var encoded = Encoding.ASCII.GetBytes(value);
Array.Copy(encoded, 0, buffer, 2, encoded.Length);
return(stream.WriteAsync(buffer, 0, buffer.Length));
}
protected Task SerializeIPAddressList(Stream stream, DHCPOptionType optionType, List <IPAddress> addresses)
{
var buffer = new byte[2 + (4 * addresses.Count)];
buffer[0] = Convert.ToByte(optionType);
buffer[1] = Convert.ToByte(4 * addresses.Count);
for (var i = 0; i < addresses.Count; i++)
{
Array.Copy(addresses[i].GetAddressBytes(), 0, buffer, 2 + (i * 4), 4);
}
return(stream.WriteAsync(buffer, 0, buffer.Length));
}
protected Task SerializeIPAddress(Stream stream, DHCPOptionType optionType, IPAddress address)
{
var buffer = new byte[]
{
Convert.ToByte(optionType),
4,
0, 0, 0, 0
};
Array.Copy(address.GetAddressBytes(), 0, buffer, 2, 4);
return(stream.WriteAsync(buffer, 0, buffer.Length));
}
static protected Task SerializeTimeSpan(Stream stream, DHCPOptionType optionType, TimeSpan timeSpan)
{
return(SerializeInt32(stream, optionType, Convert.ToInt32(timeSpan.TotalSeconds)));
}
public DHCPOptionUnrecognized(int optionNumber, int optionLength, byte [] buffer, long offset)
{
OptionNumber = (DHCPOptionType)optionNumber;
Data = new byte[optionLength];
Array.Copy(buffer, offset, Data, 0, optionLength);
}
