public HandshakeExtension GetExtension(string name)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
return(RequiredExtensions.FirstOrDefault(x => x.Name == name) ??
OptionalExtensions.FirstOrDefault(x => x.Name == name));
}
public int CopyTo(byte[] destination, int offset)
{
var firstOffset = offset;
destination[offset++] = VersionMajor;
destination[offset++] = VersionMinor;
destination[offset++] = Flags;
//identity
destination[offset++] = (byte)Identity.Length;
_receiveStateBytesLeft = Encoding.ASCII.GetBytes(Identity, 0, Identity.Length, destination, offset);
offset += _receiveStateBytesLeft;
//required extensions
if (RequiredExtensions == null || RequiredExtensions.Length == 0)
{
//leave them as zeroes.
offset += 2;
}
else
{
var str = string.Join(";", RequiredExtensions.Select(x => x.Serialize()));
var buf = BitConverter.GetBytes((ushort)str.Length);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(buf);
}
Buffer.BlockCopy(buf, 0, destination, offset, 2);
_receiveStateBytesLeft = Encoding.ASCII.GetBytes(str, 0, str.Length, destination, offset + 2);
offset += 2 + _receiveStateBytesLeft;
}
//optional extensions
if (OptionalExtensions == null || OptionalExtensions.Length == 0)
{
//leave them as zeroes.
offset += 2;
}
else
{
var str = string.Join(";", OptionalExtensions.Select(x => x.Serialize()));
var buf = BitConverter.GetBytes((ushort)str.Length);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(buf);
}
Buffer.BlockCopy(buf, 0, destination, offset, 2);
_receiveStateBytesLeft = Encoding.ASCII.GetBytes(str, 0, str.Length, destination, offset + 2);
offset += 2 + _receiveStateBytesLeft;
}
return(offset - firstOffset);
}
public bool HasExtension(string extension)
{
bool result = false;
for (uint i = 0; i < RequiredExtensions.NumberOfItems; i++)
{
if (string.Equals(RequiredExtensions.GetItem(i), extension))
{
result = true;
break;
}
}
return(result);
}
