/// <summary>
/// Processes the received message
/// </summary>
private void EndReadHeader(IAsyncResult res)
{
byte[] odcheader = null;
try
{
odcheader = (byte[])res.AsyncState;
socket.EndRead(res);
}
catch (Exception ex)
{
Logging.WriteString(String.Format("Exception in DirectIMConnection.EndReadHeader: {0}", ex));
DisconnectFromServer(true);
}
// Verify that this is an ODC header
if (Encoding.ASCII.GetString(odcheader, 0, 4) != "ODC2")
{
// Huh...
return;
}
ushort datalen = (ushort)((odcheader[4] << 8) | odcheader[5]);
if (datalen < 6)
{
// Oh
return;
}
ByteStream messageheader = ReadPacket(datalen - 6);
if (messageheader == null)
{
// Tum ta tiddily tumpa turr
return;
}
// Extract various members from the message header
messageheader.AdvanceToPosition(6);
byte[] cookie = messageheader.ReadByteArray(8);
messageheader.AdvanceToPosition(22);
uint datalength = messageheader.ReadUint();
ushort charset = messageheader.ReadUshort();
ushort subcharset = messageheader.ReadUshort();
DirectIMFlags flags = (DirectIMFlags)messageheader.ReadUint();
messageheader.AdvanceToPosition(38);
string screenname = messageheader.ReadString(16, Encoding.ASCII);
if ((flags & DirectIMFlags.TypingPacket) != 0)
{
// Determine the type of typing packet this is
if ((flags & DirectIMFlags.UserTyping) != 0)
{
//_parent.OnTypingNotification(screenname, TypingNotification.TypingStarted);
}
else if ((flags & DirectIMFlags.UserTyped) != 0)
{
//_parent.OnTypingNotification(screenname, TypingNotification.TextTyped);
}
else
{
// TODO: restore these
// _parent.OnTypingNotification(screenname, TypingNotification.TypingFinished);
}
// Probably no data, but read it in anyway to make sure we're not missing anything
ReadPacket((int)datalength);
}
else if ((flags & DirectIMFlags.ConfirmationPacket) != 0 && datalength == 0)
{
// Do we really do anything here? I don't think so.
}
else
{
// Create a new instant message
DirectIM dim = new DirectIM(Other.ScreenName, this);
dim.Cookie = csammisrun.OscarLib.Cookie.GetReceivedCookie(cookie);
dim.IsAutoResponse = ((flags & DirectIMFlags.AutoResponse) != 0);
dim.Encoding = IM.GetEncodingFromCharset(charset, subcharset);
// Create a spooler to incrementally read in a DirectIM packet,
// then restart the read sequence when it's done
DirectIMDataReader reader = new DirectIMDataReader(this, dim);
reader.DataReaderComplete += new DataReaderCompleteHandler(delegate
{
parent.OnDirectIMReceived(
reader.Message);
reader.Dispose();
ReadHeader();
});
reader.Read(datalength);
return;
}
// Restart the read sequence
ReadHeader();
}