sharing thoughts & experiences

Ionic's ISAPI Rewrite Filter aka IIRF for IIS8+


Ionic's ISAPI Rewrite Filter is a very popular and free filter for URL rewriting in IIS. The latest official version does not work in IIS8+. I only recently moved from IIS7 to IIS8 and have been using IIRF-2.1.2.3-x64 for a long time on IIS7 (my preferred URL rewriting mechanism as its easy and fast), so, to my complete dismay, it would not work on IIS8 and I have quite a few sites that depend on it.

After some digging, I realised only the redirect rules fail while the rewrites are ok, this turned out to be an issue with the code and something other people have fixed but did not make the fix publicly available.

I requested the new fixed DLL from a number of people to which Pavel Surikov responded and gave me his new and improved code revision. Thanks Pavel. He added one extra feature besides fixing the broken redirects for IIS8+; support for IPv6. So IIRF-2.1.2.4-x64 is the version to have if you run IIS8 and above.

One other way to run IIRF on IIS8+ is to use the old IIRF-2.0.1.15 version from the official website. But there are a couple of issues with it;

  1. This version is only available in 32bit, so in order for it to run in IIS8+ which is 64bit, one would have to go to advanced settings on the application pool of the site running IIRF and set [Enable 32-Bit Applications = True]
  2. We also lose all the bug fixes and new features added after this version

The official IIRF CodePlex project seems to be stuck in version IIRF-2.1.2.3-x64 for quite a while which is a shame for such a nice filter.

A lot of people now use the Microsoft URL Rewrite module (including myself), but IIRF still has a place in my armoury for its ease of use.

I'm not sure if the license agreement allows that I redistribute this new code revision but if anyone has an objection, please let me know.

Downloads

IIRF

Version
Date
Info
Images
Size
Hits
File
2.1.2.4
2015.07.06
~
~
136 KB
3428

Important

Due to the ongoing wave of malware, spyware and other disruptive software found on the Internet, you must only download software from trusted websites. It's always safer to download from official websites like this one. My software contains no such dangers and you are encouraged to diligently perform further checks before installing and running this program. Never just download from any website.

Disclaimer

This software is free to download, use and distribute, but you may NOT modify it in any way and redistribute. File copyright information and readme files must accompany the software at all times. NO WARRANTIES of any kind are given, and in no event shall I be held responsible. That remains solely with you.


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