 Nadim Abdo Principal Development Manager Microsoft Corporation  Gaurav Daga Senior Program Manager Lead Microsoft Corporation ES21

Agenda

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Vista and Windows Server 2008 era

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Remoting scenarios enabled by RDP

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Graphics Virtual Channels (VCs) Mouse & Keyboard VCs Device VCs Partner Virtual Channel Plug-Ins Virtual Channel Multiplexing and Framing Bulk Compression (RDP5+, RDP6.0, RDP6.1) Security Layer (SSL/Kerberos/NTLM) Transport Layer (e.g. TCP, RPC/HTTP, Windows Live Tunnel)

Trends affecting presentation remoting

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What is new in Windows 7?

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RDP Platform Improvements

Windows 7 Aero Direct2D & Direct 3D 10.1

True Multimon Support RDP Core Performance Improvements Multimedia: Media Foundation Low latency Audio Playback Bi –directional Audio Multimedia: DirectShow

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Deep dive into RDP Graphics Architecture

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D2D App DX10.1 App DWM DX Runtime RDPD3D.DLL

DWMcore.DLL

TS Dynamic Virtual Channels USER KERNEL Media App TSMF.DLL

GDI App Win32k.sys (USER/GDI) Apps RDP OS RDPDD (Display Driver) RDP Driver Stack Transport: (TCPIP.Sys) To RDP Client

RDP Client Rendering Direct2D Direct 3D: 10.1

Efficient Media Requires: Codecs on Client Content cannot have DRM or licensing GDI RDP Host Rendering WPF Silverlight Flash All other media Direct 3D <10.1

180 160 140 120 100 80 60 40 20 0

Bandwidth Improvement per release

Executive PPT 40% Gain!

XP (RDP 5.2) Vista (RDP 6.0) Windows 7 (RDP 7.0)

1 0 3 2 6 5 4 65% Drop Typing and Scrolling

Bandwidth - Kbps

Scrolling XP (RDP 5.2) Vista (RDP 6.0) Windows 7 (RDP 7.0)

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RDP Platform

  How to extend RDP API Walkthroughs 

API family overview

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Intro and usage

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Intro and usage

     WTSVirtualChannelOpenEx (.., WTS_CHANNEL_OPTION_DYNAMIC) WTSVirtualChannelQuery  ReadFile/WriteFile

Client-side usage

HKCU\Software\Microsoft\Terminal Server Client\Default\AddIns pChanMgr->CreateListener(Name, pMyCallback) ::OnNewChannelConnection(pChannel) IWTSVirtualChannel::Write(cbSize, buf) CMyChannel::OnDataReceived(cbSize, buf)

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How to make your apps run efficiently in a remote session

Basics

 Consider scaling down expensive graphics in remote e.g., Animations  Detect if the session is remote: Managed: System.Windows.Forms.SystemInformation.TerminalServerS

ession Win32: GetSystemMetrics(SM_REMOTESESSION)    Consider session transitions Leverage RDP Compression GP’s  30-40% bandwidth savings Important to test your app remotely!

GDI

 Guidance for offscreen surfaces    Layered Windows can be very expensive   Do NOT use Screen capture - GetDC(NULL)   

Remoting Direct 3D and Direct2D

    Use Direct2D – has efficient command remoting Direct3D Apps: Use DX10.1 and DXGI 1.1 (DirectX Graphics Infrastructure) CreateDXGIFactory1(…); pFactory->EnumAdapters1(i, &pAdapter) pAdapter->GetDesc1(&Desc); BOOL IsRemote = Desc.Flags & DXGI_ADAPTER_FLAG_REMOTE; Use the new IsCurrent() API to handle session transitions and discover new adapters Tip: Local optimizations are magnified remotely!

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 http://blogs.msdn.com/ts  http://connect.microsoft.com/tsappcompat  http://www.microsoft.com/ts

www.microsoftpdc.com

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