HDX transport

HDX adaptive throughput

HDX adaptive throughput intelligently fine-tunes the peak throughput of the ICA session by adjusting output buffers. The number of output buffers is initially set at a high value. This high value allows data to be transmitted to the client more quickly and efficiently, especially in high latency networks.

Provides better interactivity, faster file transfers, smoother video playback, higher framerate, and resolution results in an enhanced user experience.

Session interactivity is constantly measured to determine whether any data streams within the ICA session are adversely affecting interactivity. If that occurs, the throughput is decreased to reduce the impact of the large data stream on the session and allow interactivity to recover.

This feature is supported only on Citrix Workspace app 1811 for Windows and later.

Important:

HDX adaptive throughput changes the output buffers by moving the mechanism from the client to the VDA. So, adjust the number of output buffers on the client as needed.

Adaptive transport

Adaptive Transport is a mechanism in Citrix Virtual Apps and Desktops and Citrix DaaS that allows to use Enlightened Data Transport (EDT) as the transport protocol for ICA connections. For more information, see Adaptive transport section in the Citrix Virtual Apps and Desktops documentation.

Loss tolerant mode for audio

Citrix Workspace app uses loss tolerant mode for audio redirection. This feature improves the user experience for real-time streaming when users are connecting through networks with high latency and packet loss.

You need to use VDA version 2311 or later. By default this feature is enabled on Citrix Workspace app for Windows. However, it is disabled on VDA.

To enable loss tolerant mode for audio, configure the following registry value and restart the machine.

For Multi-session VDA:

  • Key: HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Citrix\Audio
  • Value name: EdtUnreliableAllowed
  • Value type: DWORD
  • Value data: 1

For Workstation VDA:

  • Key: HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Audio
  • Value name: EdtUnreliableAllowed
  • Value type: DWORD
  • Value data: 1
HDX transport