public IAsyncResult BeginReceiveFrom(byte[] buffer, int size, SocketFlags flags, ref EndPoint ep, AsyncCallback callback, object state)
{
CallbackState st = new CallbackState();
st.buffer = buffer;
st.size = size;
st.state = state;
return(_socket.BeginReceiveFrom(buffer, 0, size, flags, ref ep, callback, st));
}
public int BeginSend(byte[] buffer, int size, SocketFlags flags, AsyncCallback callback, object state)
{
CallbackState st = new CallbackState();
st.size = size;
st.state = state;
_socket.BeginSend(buffer, 0, size, 0, callback, st);
return(size);
}
public int EndReceive(IAsyncResult ar)
{
int bytesRead = _socket.EndReceive(ar);
if (bytesRead > 0)
{
CallbackState st = (CallbackState)ar.AsyncState;
st.size = bytesRead;
return(bytesRead);
}
_close = true;
return(bytesRead);
}
public byte[] GetAsyncResultBuffer(IAsyncResult ar)
{
CallbackState st = (CallbackState)ar.AsyncState;
return(st.buffer);
}
public int GetAsyncResultSize(IAsyncResult ar)
{
CallbackState st = (CallbackState)ar.AsyncState;
return(st.size);
}
