for Developers

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for Developers

• Martin ParryDeveloper and Platform
  GroupMicrosoft
• martin.parry_at_microsoft.comhttp//martinparry.com

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Agenda

• Top 7 Ways To Light Up Your Apps on Windows
  Server 2008
• Part 1 emphasis on
• IIS7, PowerShell
• Part 2 emphasis on
• WER, Restart and Recovery APIs, TxF

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The Top 7 Ways Part 1

• Build More Flexible Web Applications
• Design Highly-Manageable Applications
• Develop Federation-Aware Applications
• Build Connected Systems
• Build For Scalability
• Virtualize
• Develop More Reliable Applications

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1. Build More Flexible Web Apps
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IIS 7.0 Introduction

• Client version shipped with Windows Vista
• Limited throughput
• Server version will ship with WS2008
• Currently available in RC form
• More features than client

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IIS 6.0 Architecture
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IIS 7.0 Architecture
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Windows Process Activation Service

• Manages configuration
• What used to be the metabase
• Responsible for starting worker processes...
• w3wp.exe
• ...and routing incoming requests to the
  appropriate worker process
• Also hosts the new listener adapter interface
• You can build your own listeners for WAS

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IIS 6.0 Request Pipeline
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IIS 6.0 Request Pipeline

• IIS pipeline extensible using ISAPI
• Native code
• Can apply to all requests
• ASP.NET pipeline extensible using IHttpModule
• Managed code
• Can only apply to requests routed via ASP.NET
• Certain pipeline elements are always there
• IIS authentication
• Logging

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IIS 7.0 Request Pipeline
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IIS 7.0 Request Pipeline

• Linear sequence of modules
• Any module can be enabled/disabled
• Including built-in ones
• Modules can be managed or native code
• Any type of module applies to any request

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IIS7 Modules
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IIS 6.0 Configuration

• IIS 6.0 (and earlier) use the metabase
• Stores all configuration information
• Originally in binary form, then in XML
• Hard to allow management of separate apps by
  different groups of people

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IIS 7.0 Configuration
machine.config
root web.config
web.config
web.config
web.config
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IIS7 Configuration
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Building Native Modules

• Export a RegisterModule function from DLL
• Define one or more other functions
• To process request or response
• Inside RegisterModule...
• Hook up your other functions(s) at specific
  points in the pipeline
• E.g. Begin, AuthN, AuthZ, ExecuteHandler, End

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Building Managed Modules

• Implement IHttpModule
• Implement Init function
• Attach event handlers for specific points in the
  pipeline
• E.g. Begin, AuthN, AuthZ, ExecuteHandler, End
• Same as existing ASP.NET HttpModules

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IIS7 Managed Module
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IIS7 Diagnostics - RSCA

• Runtime Status and Control API
• Shows currently executing -
• Application Pools
• Requests
• Exposed via
• IIS admin tool
• Programmatically via WMI and Managed OM

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IIS7 Diagnostics Failed Requests

• IIS7 allows you to log trace information just for
  requests that fail
• For some definition of failure
• Buffers all trace output
• Only flushes to disk if the request fails
• Log output is XML, with a stylesheet
• Breaks down processing by module
• Includes timing details for each module

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IIS7 Failed Request Tracing

• Enable FREB at the Web Site level
• Configure FREB rules at the application level
• Each rule -
• Specifies the type of web content it applies to
• Can specify a specific failure code
• Can specify a duration in seconds
• Can specify a trace event severity

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IIS7 Failed Request Tracing
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2. Design Highly-Manageable Apps
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Management in Windows Server 2008

• MMC v3.0
• Managed framework for building snap-ins
• Microsoft.ManagementConsole namespace
• Ships with .NET Framework v3.0
• Already seen it in use IIS Admin Console
• Windows PowerShell

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Windows PowerShell

• Its a command-line interface!
• Scriptable
• Commands may be composed
• Not based on text, based on .NET objects
• Available for...
• Windows XP
• Windows Server 2003
• Windows Vista
• Ships inside...
• Windows Server 2008

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Windows PowerShell and Scripting
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PowerShell and Developers

• Developers can create new commands
• ...and can create PowerShell drives
• Excellent way to provide admin experience for
  your applications.
• Exchange 2007 and SQL Server 2008, for example

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PowerShell Cmdlets and Providers
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3. Develop Federation-Aware Apps
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Developing Federated Identity Apps

• With AD FS
• Active Directory Federation Services
• Why?
• Enables cross-domain, cross-platform access to
  your Web applications
• Provides Web SSO experience
• Promotes a claims-based programming model
• Achieve reach for your application
• Think outside of the firewall

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B2B Federation Scenario
Federation Trust
https
https
https
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Application Authorization Using Claims

• Claims
• Statements made by an authority about a user
• Used for authorization purposes
• Three types of ADFS claims
• Identity
• Email
• User Principal Name (UPN)
• Common Name
• Group
• Custom

Identity UPN eric_at_adatum.com
Custom DisplayName Eric Parkinson Position Pur
chasing Staff
Group Purchaser Administrator Adatum
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Coding a Federation-Aware app

• System.Web.Security.SingleSignOn
• System.Web.Security.SingleSignOn.Authorization
• In code -
• SsoId User.Identity as SingleSignOnIdentity
• SsoId.IsAuthenticated have we a good security
  token?
• SsoId.SecurityPropertyCollection each item
  could be...
• Group claim, UPN claim, custom claim
• Application can get any/all claim details

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4. Build Connected Systems
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Windows Communication Foundation
.NET Remoting
ASMX
Interop with other platforms
Extensibility Location transparency
Attribute- Based Programming
Message- Oriented Programming
WS- Protocol Support
Enterprise Services
System.Messaging
WSE
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Poison Message Handling
Sub-queues
MSMQ 4.0
App-Specific Dead Letter Queues
Transactional Remote Receive
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Sub-queues

• Never created explicitly
• Accessed via DIRECT FormatName...
• DIRECTOSserver\private\myqueuemysubq
• Created at time of first Open
• Can receive in the normal fashion
• Can only insert with MQMoveMessage
• No managed code equivalent ?

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Poison Message Handling

• WCF binding configuration...
• ltnetMsmqBindinggt
• ltbinding name"PoisonBinding" receiveRetryCount
  "0 maxRetryCycles"1 retryCycleDelay"00000
  5 receiveErrorHandling"Move"gtlt/bindinggt
• lt/netMsmqBindinggt

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End of Part One

• Build More Flexible Web Applications
• IIS7
• Design Highly-Manageable Applications
• Windows PowerShell, MMC3
• Develop Federation-Aware Applications
• AD FS
• Build Connected Systems
• WCF, MSMQ 4

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