Posts tagged IISConfig
Implementing IAppHostPathMapper in C
Apr 18th
Few days ago I was required to implement IAppHostPathMapper interface in native C to map configuration path MACHINE/WEBROOT/APPHOST to DefaultAppPool.config and struggled with finding good documentation. With help of some incomplete, hard to find documentation and some head banging here is what worked for me.
New features in configuration system and appcmd in IIS 7.5
Mar 25th
Following new features have been added to IIS configuration system and appcmd command line tool in IIS 7.5.
Configuration System
1. Configuration system tracing and logging
How configuration system merges sections
Feb 11th
One of the things which was not clear to me when IIS7 configuration system was written was how configuration system merges all the configuration data available and then decide what values are effective for the current request. One of confusions came from the fact that I assumed that IIS modules try to read the values for the current URL and then keep moving up till it finds the attribute explicitly defined in a configuration file. This is part true for the configuration system but never for the modules. All modules do is ask the configuration system for a merged view of a particular configuration section for a configuration path which usually corresponds to the URL of the requested page. If you are familiar with AhAdmin, this corresponds to the following call.
How to read/write administration.config
Jul 26th
IIS7 configuration system understands machine.config, web.config and applicationHost.config but does not handle administration.config natively. This means reading and writing administration.config is little difficult. If you use AhAdmin directly and call GetAdminSection for a section defined in administration.config, it will throw a configuration error for all configuration paths saying that it couldn’t find the section in the configuration file. Easiest way you can work with administration.config is by using Microsoft.Web.Administration (MWA). ServerManager::GetAdministrationConfiguration gives you a Configuration object which represents administration.config. Below is a sample program which uses MWA to print UI module providers registered in administration.config.
class Program
{
Working with RSCA using configuration APIs
Jul 25th
One of the new features in IIS7 in windows server 2008 enable people to extend existing IIS configuration sections. If you have a schema file in schema folder which defines section already defined in IIS_Schema.xml, IIS configuration system will merge the schema defined in these two files. This enables you to add owner, email, phone properties to sites and have then keep this data under sites section in applicationHost.config. In addition to this, there is a new concept of dynamic properties. These are the properties which doesn’t have static values in configuration files but whose values can be supplied dynamically by some COM components. Dynamic properties can support get/set operations as other configuration properties. Other than get and set, configuration system allows you to define methods in schema which can be called using configuration APIs. These methods can accept input and return output as well.
Using ahadmin to read/write IIS configuration – Part 2
Feb 26th
Continuing my ahadmin drill down, lets see how to use available interfaces to work with section groups, section definitions, locations and metadata. IAppHostConfigFile interface Working with section groups, section definitions and locations require you to get an instance IAppHostConfigFile which is obtained using IAppHostConfigManager.GetConfigFile(). Following code gets IAppHostConfigFile instances for machine.config, root web.config, applicationHost.config and prints file path of each.
var ahwrite = new ActiveXObject("Microsoft.ApplicationHost.WritableAdminManager");