Internet Information Services (IIS) 7.0 Resource Kit

Summary

In this chapter, we looked at the end-to-end request processing architecture of IIS 7.0. IIS 7.0 includes several core components that work together to execute the HTTP request. These components are as follows:

• HTTP.sys, the kernel-level HTTP protocol listener

• World Wide Web Publishing Service (W3SVC), the HTTP listener adapter

• Windows Process Activation Service (WAS), which provides process activation and management

• Configuration store, the distributed XML file–based configuration hierarchy that contains both IIS and ASP.NET settings

• Worker process, w3wp.exe, the self-contained user mode process that executes HTTP requests and generates responses

Each worker process serves one application pool. An application pool can be configured in one of ...