Hello, At the urging of Sandro Bonazzola, I'm bringing up something that was being discussed on Twitter earlier today: supporting RDP with KVM directly. As it turns out, about four years ago, Datto developed support for QEMU to display to RDP in a similar fashion to what was done for SPICE years ago. The way this was done was by patching QEMU[1] to send buffers to a service called RDPMux[2], which would provide RDP connections. Additionally, libvirt was adjusted to support this[3]. Now, a couple years ago, I attempted to start rebasing this to QEMU 2.12.0 for my own use[4], but while I was able to make it compile[5], it always hung when I tried to use the functionality. This came up on Twitter earlier today when talking about how KVM lacks RDP but had SPICE (which didn't catch on, and is apparently deprecated now[6]?!?) Is anyone interested in potentially helping me get this working with the latest QEMU and libvirt? I'd be happy to package up RDPMux for Fedora and get that in the distribution for people to use in that case... Best regards, Neal [1]: https://pagure.io/virt-with-rdp/blob/master/f/qemu-2.5 [2]: https://github.com/datto/RDPMux [3]: https://pagure.io/virt-with-rdp/blob/master/f/libvirt-1.3.1 [4]: https://pagure.io/virt-with-rdp/blob/master/f/qemu-2.12.0 [5]: https://copr.fedorainfracloud.org/coprs/ngompa/virt-with-rdp/build/774882/ [6]: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8-... -- 真実はいつも一つ！/ Always, there's only one truth!

On 15/08/20 06:37, Sandro Bonazzola wrote: > > At the urging of Sandro Bonazzola, I'm bringing up something that was > being discussed on Twitter earlier today: supporting RDP with KVM > directly. > > As it turns out, about four years ago, Datto developed support for > QEMU to display to RDP in a similar fashion to what was done for SPICE > years ago. The way this was done was by patching QEMU[1] to send > buffers to a service called RDPMux[2], which would provide RDP > connections. Additionally, libvirt was adjusted to support this[3]. Hi Neil, what would be the advantage over VNC? Recently I played with virtual desktops from US to Italy and VNC was completely useless while SPICE worked great. So I'm not sure why QEMU needs to support RDP unless it can provide the same level of usability as SPICE (which however can only achieve it through the paravirtualized QXL graphics adapter).

On 17/08/20 19:16, Neal Gompa wrote: > There's a few advantages to RDP over VNC: > > * RDP is orders of magnitude more network-efficient than VNC. It > leverages video streaming strategies to minimize bandwidth > requirements for remote access That however also requires a smart encoder, so basically the same code that is running in SPICE. Was there in the code you pointed Sandro to?

> As for SPICE, well... you folks deprecated it and slated it for > removal. So that means we're left with no network efficient options > once it's gone. For what it's worth, I don't think SPICE is slated for removal in upstream QEMU or in Fedora.

That only matters if oVirt is available for Fedora. Since it's not, it's likely that oVirt will lose support for SPICE in the near future. How is oVirt availability in Fedora related to SPICE support in CentOS/RHEl?