Thanks for the heads-up!

Probably @jsorg71 and @Nexarian might be interested in this here. Relative mouse input is necessary to be able to play e.g. shooters in a remote desktop session, as they rely on it.

I've been thinking about an extension like this too. I search the MS docs and can't find any.
This is a problem with MSRDP servers too, these games don't work right. Hard to believe they have not addresses this.
I looked at this extension, it has one message from client to server.
Can we add another one from server to client to tell the client to capture the mouse. That should be the event that tells the client to start using this channel for mouse input.

@jsorg71 it should be fairly easy to add a rdp channel plugin for windows that injects mouse input, so we could also cover that with this extension.

@jsorg71 as for the capture mouse message, so you want to dynamically switch between absolute and relative input depending on what the server tells?
Currently we do that with a client flag as you need client support to actually get relative input data. The channel is used whenever it is available (e.g. client & server support it and the channel major version matches)
trying to keep it simple, every message comes with a price (long term)

@jsorg71 but better keep the conversation over at FreeRDP/FreeRDP#7565 as this issue here is for xrdp implementing what we come up with ;)

I am definitely interested in helping out here! Getting it such that you could play 3D FPS games over XRDP is the dream :)

Any update on relative mouse movement support? I'm trying to do Unreal engine development over RDP from my laptop to my Ubuntu server, and this is a major blocker.