IIS7: Building New Core Server Modules Michael Volodarsky COM406 Program Manager Microsoft Corporation

2 IIS7 Server Total platform extensibility Customize the server Build and deploy custom server components Leverage powerful modular server architecture Robust native (C++) server features Powerful managed (.NET) server features

3 IIS6 Architecture Monolithic server implementation Limited customization Fixed functionality ISAPI Filter / Extension extensibility Limited Difficult, error prone

4 IIS7 Architecture Componentized server Modular features Generic request pipeline Enables Lightweight servers Custom / specialized servers

5 IIS7 Extensibility Public module extensibility model DLL factory Class-based C++ API Rich object model Enables Complete extensibility Simpler, robust code

6 IIS7 Modules vs. ISAPI Filters and Extensions More Powerful MUCH Richer API More granular notifications Easier to write and more robust Object-oriented C++ Key patterns simplified Easier to manage Consistent feature management Granular enablement

7 Building A Custom IIS7 Server Michael Volodarsky COM406 Program Manager Web Platform and Tools

8 IIS6 ASP.NET Integration ISAPI Extension Only processes ASP.NET requests Runtime limitations ISAPIordering Feature duplication Authentication Handler mapping Custom errors

9 IIS7 ASP.NET Integration Two modes: ISAPI (compat) Integrated Integrated mode.NET modules plug directly into server Process all requests Full runtime fidelity

10 IIS7.NET Extensibility Future of ASP.NET Development Existing ASP.NET 2.0 API IHttpModule and IHttpHandler types Existing API connected to server objects Bonus: API additions Response header enumeration Manipulate Request headers Manipulate Server Variables Configuration ISAPI vs. Integrated mode per app-pool Unified, configuration

11 Integrated.NET Extensibility Michael Volodarsky COM406 Program Manager Web Platform and Tools

12 IIS7 Development C++ or.NET?.NET: nice and easy Finally can do almost anything Multi-language RAD with.NET Framework Rich ASP.NET APIs Sandboxed deployment (CAS) C++: down to the metal More control over the system Higher performance Specific scenarios: non-request, cross-app

13 Compatibility Existing extensibility just works Server Built-in account IIS6 Worker Process Isolation Buffering on by default ASP.NET applications ASP.NET 1.1, ASP.NET modes: ISAPI, Integrated ISAPI filters and extensions Read-raw notifications cut

14 Logistics When, Where, How IIS7 Bits Final release: Windows Vista (Client + Server) PDC: Longhorn Server ADS build only Native API: Windows Vista beta2 refresh At PDC COM303: IIS7: Building Better ASP.NET Apps (in an hour!) COM431: IIS7 Configuration and Management COM320: IIS7 Diagnostics and Troubleshooting Daily Hands On Labs: COM HOL13-19 Ask The Experts table: Thursday 5:30-8:30 IIS7 Pavilion

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