/// <summary>
/// Processes a newly received offline message for the specified UIN
/// </summary>
/// <remarks>This is called from the ICQ manager, which receives the incoming
/// offline message packet and sends it here for processing</remarks>
internal void ReadIcqOfflineMessage(String uin, ByteStream stream)
{
String sender = stream.ReadUintLE().ToString();
// Read in the date information (GMT)
ushort year = stream.ReadUshortLE();
byte month = stream.ReadByte();
byte day = stream.ReadByte();
byte hourGmt = stream.ReadByte();
byte minute = stream.ReadByte();
DateTime received = new DateTime(year, month, day, hourGmt, minute, 0, DateTimeKind.Utc);
// Read in message type information
byte messageType = stream.ReadByte();
byte messageFlags = stream.ReadByte();
Encoding messageEncoding = GetOfflineMessageEncoding(messageType);
OfflineIM im = new OfflineIM(sender);
im.ReceivedOn = received;
im.Message = Encoding.Unicode.GetString(
Encoding.Convert(messageEncoding, Encoding.Unicode, stream.ReadByteArray(stream.ReadUshortLE() - 1)));
im.IsAutoResponse = (messageFlags == 0x03) || (messageType == 0xE8);
// Store it for delivery to the client
AcceptIcbmOIM(im);
}