/// <summary>
/// Receive Callback. Reads in incoming data, converting them to base packets. Base packets are sent to be parsed. If not enough data at the end to build a basepacket, move to the beginning and prepend.
/// </summary>
/// <param name="result"></param>
private void ReceiveCallback(IAsyncResult result)
{
ZoneConnection conn = (ZoneConnection)result.AsyncState;
//Check if disconnected
if ((conn.socket.Poll(1, SelectMode.SelectRead) && conn.socket.Available == 0))
{
mWorldConnection = null;
Program.Log.Info("Disconnected from world server!");
}
try
{
int bytesRead = conn.socket.EndReceive(result);
bytesRead += conn.lastPartialSize;
if (bytesRead >= 0)
{
int offset = 0;
//Build packets until can no longer or out of data
while (true)
{
SubPacket subPacket = SubPacket.CreatePacket(ref offset, conn.buffer, bytesRead);
//If can't build packet, break, else process another
if (subPacket == null)
{
break;
}
else
{
mProcessor.ProcessPacket(conn, subPacket);
}
}
//Not all bytes consumed, transfer leftover to beginning
if (offset < bytesRead)
{
Array.Copy(conn.buffer, offset, conn.buffer, 0, bytesRead - offset);
}
conn.lastPartialSize = bytesRead - offset;
//Build any queued subpackets into basepackets and send
conn.FlushQueuedSendPackets();
if (offset < bytesRead)
{
//Need offset since not all bytes consumed
conn.socket.BeginReceive(conn.buffer, bytesRead - offset, conn.buffer.Length - (bytesRead - offset), SocketFlags.None, new AsyncCallback(ReceiveCallback), conn);
}
else
{
//All bytes consumed, full buffer available
conn.socket.BeginReceive(conn.buffer, 0, conn.buffer.Length, SocketFlags.None, new AsyncCallback(ReceiveCallback), conn);
}
}
else
{
mWorldConnection = null;
Program.Log.Info("Disconnected from world server!");
}
}
catch (SocketException)
{
if (conn.socket != null)
{
mWorldConnection = null;
Program.Log.Info("Disconnected from world server!");
}
}
}