_AFD_CONTROL_CODE  141 src/win/winsock.h     _AFD_CONTROL_CODE(AFD_RECEIVE, METHOD_NEITHER)
_AFD_CONTROL_CODE  144 src/win/winsock.h     _AFD_CONTROL_CODE(AFD_RECEIVE_DATAGRAM, METHOD_NEITHER)
_AFD_CONTROL_CODE  147 src/win/winsock.h     _AFD_CONTROL_CODE(AFD_POLL, METHOD_BUFFERED)