id summary reporter owner description type status milestone component version severity resolution keywords cc 9277 Serial Hardware Handshaking in Windows XP SP3 Broken? bd@… chris_kohlhoff "9600 8N1 Transmit only, both DSR and CTS asserted by device (printer). Behavior is apparently no different than handshake none. Works fine with windows-specific code which sets the DCB as follows: {{{ dcb.fOutxCtsFlow = true; // Enable CTS monitoring dcb.fOutxDsrFlow = true; // Enable DSR monitoring dcb.fDtrControl = DTR_CONTROL_HANDSHAKE; // Enable DTR handshaking dcb.fOutX = false; // Disable XON/XOFF for transmission dcb.fInX = false; // Disable XON/XOFF for receiving dcb.fRtsControl = RTS_CONTROL_HANDSHAKE; // Enable RTS handshaking }}} Couldn't find where the DCB is set in asio..." Bugs new To Be Determined asio Boost 1.54.0 Showstopper