/// <summary>
/// Creates an ODC2 packet for sending
/// </summary>
/// <returns></returns>
public byte[] ToByteArray()
{
int headerlength = 76, index = 0;
Encoding encoding = UtilityMethods.FindBestOscarEncoding(Message);
int datalength = encoding.GetByteCount(Message);
int buffersize = headerlength + datalength;
byte[] packet = new byte[buffersize];
ushort charset = 0, charsubset = 0;
Marshal.InsertString(packet, "ODC2", Encoding.ASCII, ref index);
Marshal.InsertUshort(packet, 0x004C, ref index);
Marshal.InsertUint(packet, 0x00010006, ref index);
index = 12;
Marshal.CopyArray(Connection.Cookie.ToByteArray(), packet, 0, ref index);
index = 28;
Marshal.InsertUint(packet, (uint)(datalength + GetAttachmentDataLength()), ref index);
GetCharsetCodesFromEncoding(encoding, out charset, out charsubset);
Marshal.InsertUshort(packet, charset, ref index);
Marshal.InsertUshort(packet, charsubset, ref index);
Marshal.InsertUint(packet, 0x00000060, ref index);
index = 44;
Marshal.InsertString(packet, ScreenName, Encoding.ASCII, ref index);
Marshal.CopyArray(encoding.GetBytes(Message), packet, 0, 76);
return(packet);
}
