- Due to a bug in the libusbredirhost library, handling of timeouts for bulk transfers did not work correctly. Consequently, traffic of USB ACM serial port devices, such as PSTN modems and SmartCard readers, could not be properly redirected. With this update, no timeout is set on the usb-host side for these devices and the traffic redirection works as expected.
- The usbredir code was allocating an unlimited amount of write buffers. Consequently, when a USB webcam produced data faster then it could be written out, the write queue grew boundlessly and the remote-viewer utility used an enormous amount of RAM. The underlying source code has been modified so that usbredir now checks how large the write queue is and drops isochronous data packets when the queue is too long.
- Support for live migration of SPICE USB redirection requires support for state serialization. This update adds this missing support to the libusbredirparser library.