WAIT_CRLF
if (dlen <= MAX_MESSAGE_SIZE && !(pflags & WAIT_CRLF)) {
pflags &= ~WAIT_CRLF;
pflags |= WAIT_CRLF;
if (dlen <= MAX_MESSAGE_SIZE && (pflags & WAIT_CRLF) == 0 &&
pflags &= ~WAIT_CRLF;
pflags |= WAIT_CRLF;