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• 10-29-2008, 8:17 AM

  k_sega Joined on 10-15-2008, 1:45 PM Posts 11

  ARR as a proxy Reply Contact Hi,  I'm still looking for a way to use IIS like a proxy. Actually I want to create module for additional analysis of html code, that goes thru that proxy. In the article http://blogs.iis.net/wonyoo/archive/2008/07/26/relationship-between-application-request-routing-and-url-rewrite-modules.aspx the author writes that ARR checks whether the URL matches any server group name. In case if it does not match it is working as proxy. So, I do following: Set no rules for URL rewriter Set no server groups for ARR Set proxy in LAN settings of connection tab to 127.0.0.1:80 Go to microsoft.com and see IIS7 welcome page.  Then I've tried to create one rule for URL rewriter - wildcard:* and action {R:0} And it seems that ARR does not works again.  Can you describe how to use ARR as proxy more detailed please. Thanks in advance.

• 10-29-2008, 12:57 PM

  In reply to

  anilr Joined on 05-23-2006, 10:13 PM Redmond, WA Posts 2,247

  Re: ARR as a proxy Reply Contact Your rule would look like below   <rewrite>     <globalRules>       <rule name="Proxy" patternSyntax="Wildcard" stopProcessing="true">         <match url="*" />         <conditions>           <add input="{HTTP_HOST}" pattern="*" />         </conditions>         <action type="Rewrite" url="http://{C:0}/{R:0}" />       </rule>     </globalRules>   </rewrite> note that you can only use ARR for http forward proxy and not https forward proxy because we do not support the CONNECT verb. Anil Ruia Senior Software Design Engineer IIS Core Server

• 11-01-2008, 12:42 PM

  In reply to

  k_sega Joined on 10-15-2008, 1:45 PM Posts 11

  Re: ARR as a proxy Reply Contact Ok! great! Thats what I need. But! I've written almost the same myself using managed IIS Handler. Actually it's great to have IIS7's power in hand. The problem in ARR as proxy and my module - incorrect behavior when authentication is required. As far as I understand if I set proxy in IE - it starts send header proxy-connection instead of connection. And so, after server responds "401" no windows with login/password request is shown. Do you know the workaround?

• 11-03-2008, 12:14 PM

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  anilr Joined on 05-23-2006, 10:13 PM Redmond, WA Posts 2,247	Re: ARR as a proxy Reply Contact The authentication problem with ARR TP1 is fixed in the upcoming RC release - I don't know what problem your handler has. Anil Ruia Senior Software Design Engineer IIS Core Server

• 11-07-2008, 1:05 PM

  In reply to

  k_sega Joined on 10-15-2008, 1:45 PM Posts 11

  Re: ARR as a proxy Reply Contact One more problem I've made everythink you say - set rule below for Url rewriter, no settings to ARR. And I've added my managed module to analyze all requests. And it has worked for some time... But after some manipulations (seems that I did nothing special with it) my module fails every request. Details of failure: 1. IIS calls method Init of my module 2. IIS writes following to the application event log: Event code: 3005 Event message: An unhandled exception has occurred. Event time: 11/7/2008 8:50:34 PM Event time (UTC): 11/7/2008 5:50:34 PM Event ID: e57bcc4779884d99b2df5a568f11c141 Event sequence: 2 Event occurrence: 1 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1/ROOT-1-128705538346767737 Trust level: Full Application Virtual Path: / Application Path: C:\inetpub\wwwroot\ Machine name: TEST Process information: Process ID: 4116 Process name: w3wp.exe Account name: NT AUTHORITY\LOCAL SERVICE Exception information: Exception type: NullReferenceException Exception message: Object reference not set to an instance of an object. Request information: Request URL: Request path: User host address: User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\LOCAL SERVICE Thread information: Thread ID: 5 Thread account name: NT AUTHORITY\LOCAL SERVICE Is impersonating: False Stack trace: at System.Web.Security.CookielessHelperClass.RemoveCookielessValuesFromPath() at System.Web.HttpContext.Init(HttpRequest request, HttpResponse response) at System.Web.HttpContext..ctor(HttpWorkerRequest wr, Boolean initResponseWriter) at System.Web.Hosting.PipelineRuntime.CreateContext(IIS7WorkerRequest wr, IntPtr nativeRequestContext) 3. If I remove my module from the list - it starts working as proxy. It seems that the rule was executed, but managed context can't be created. Also I suppose that the order of modules can influence on it. What do you think about it? Thanks in advance.

• 11-10-2008, 5:13 PM

  In reply to

  k_sega Joined on 10-15-2008, 1:45 PM Posts 11

  Re: ARR as a proxy Reply Contact Any ideas? Need more information? More comments. When I set any (even empty) managed module and set up URL rewriter together with ARR I get 400.0 error whith "ASP.NET detected invalid characters in the URL". .NET framework code analysis shows that the HttpContext.Current.Request has no fields filled. Seems that URL Rewrute and ARR do not allow to use any managed module together with them. Am I wrong? I can create dump of the process on exception, provide settings of my IIS, provide more information that can be helpfull to find the root cause of the problem. Hope your help. Thanks in advance

• 11-18-2008, 6:11 PM

  In reply to

  anilr Joined on 05-23-2006, 10:13 PM Redmond, WA Posts 2,247	Re: ARR as a proxy Reply Contact Sorry, could not look at this earlier.  I am able to repro this now, seems like a null reference exception in asp.net - I am following up with the asp.net team. Anil Ruia Senior Software Design Engineer IIS Core Server

• 11-18-2008, 7:23 PM

  In reply to

  k_sega Joined on 10-15-2008, 1:45 PM Posts 11	Re: ARR as a proxy Reply Contact Thank you for your answer. Please take a look at my though here: http://forums.iis.net/p/1153181/1885282.aspx#1885282 Is it correct?

• 11-24-2008, 5:09 PM

  In reply to

  anilr Joined on 05-23-2006, 10:13 PM Redmond, WA Posts 2,247	Re: ARR as a proxy Reply Contact No, that is not the cause.  The cause for the error is now understood and we are planning to fix it for the next version of IIS/ASP.Net.  If you would like a hotfix for the current version of IIS/ASP.Net, can you explain why you want to use a managed module with ARR in more detail? Anil Ruia Senior Software Design Engineer IIS Core Server

• 12-03-2008, 5:29 AM

  In reply to

  k_sega Joined on 10-15-2008, 1:45 PM Posts 11	Re: ARR as a proxy Reply Contact We wanted to use it for testing purposes as our internal product. I do not think that will escalate it to an appropriate level for you to generate a hotfix. When will it possible to use ARR in such way? What version of ASP.NET or IIS you think will fix this bug?

• 12-03-2008, 4:45 PM

  In reply to

  anilr Joined on 05-23-2006, 10:13 PM Redmond, WA Posts 2,247	Re: ARR as a proxy Reply Contact We are currently planning to fix this in windows server 2008 R2 Anil Ruia Senior Software Design Engineer IIS Core Server

• 01-15-2009, 10:39 AM

  In reply to

  pascal06 Joined on 08-12-2007, 2:51 PM Posts 11	Re: ARR as a proxy Reply Contact Hi, I'm facing with the same issue, Using any other http module break the pipeline, Any news regarding the fix ? Thanks, Best regards,  Pascal

• 01-28-2009, 8:03 PM

  In reply to

  anilr Joined on 05-23-2006, 10:13 PM Redmond, WA Posts 2,247	Re: ARR as a proxy Reply Contact This is being fixed for win7 and ws08 R2 - if you need it fixed for ws08, can you provide some business reason we can use to push for a qfe? Anil Ruia Senior Software Design Engineer IIS Core Server

• 05-06-2009, 7:14 PM

  In reply to

  mbaocha Joined on 04-21-2009, 8:38 PM Posts 35	Re: ARR as a proxy Reply Contact  Why not check out this url - www.iisproxy.net It details all you need to know regarding using IIS as a proxy.   cheers   ____________________________________ Cheap Affordable Web Hosting | Windows Linux PHP ASPX MYSQL Website Hosting | Best Web Design Company