Yeah I messed with that. Sidechannel DLLs for RDP aren't fun. XFreeRDP actually also supports that on Linux. I used it for signalling phone calls from the clie

Yeah I messed with that. Sidechannel DLLs for RDP aren't fun. XFreeRDP actually also supports that on Linux. I used it for signalling phone calls from the client to an RDP RemoteApp and initiating calls from the RemoteApp. I would decline that project if I was asked today.