private void ReceiveCallback(IAsyncResult ar)
{
SocketState state = null;
try
{
state = (SocketState)ar.AsyncState;
int byteCount = state.Socket.EndReceive(ar);
if (byteCount > 0)
{
state.MessageData.Seek(0, SeekOrigin.End);
state.MessageData.Write(state.Buffer, 0, byteCount);
state.MessageData.Seek(0, SeekOrigin.Begin);
int b = 0;
int count = 0;
while ((b = state.MessageData.ReadByte()) > -1)
{
if (b == 0)
{
count++;
}
else
{
count = 0;
}
if (count == EndOfFileLength)
{
state.Complete();
return;
}
}
state.Socket.BeginReceive(state.Buffer, 0, state.Buffer.Length, 0, ReceiveCallback, state);
}
}
catch (Exception ex)
{
if (state != null)
{
state.Exception = ex;
state.Complete();
}
}
}
private void ConnectCallback(IAsyncResult ar)
{
SocketState state = null;
try
{
state = (SocketState)ar.AsyncState;
state.Socket.EndConnect(ar);
}
catch (Exception ex)
{
if (state != null)
{
state.Exception = ex;
}
}
finally
{
if (state != null)
{
state.Complete();
}
}
}