Hi,

I am trying to understand the caching mechanisms involved with the ARR/External Disk Cache combination.

How does the module decide what to cache and for how long?

Also, is it possible to somehow customize the caching algorithm?

Thank you.

Hi,

just running some tests with ARR 3. Have 3 servers in the farms, each pointing to different websites. All sites work fine with HTTP.

The site that needs https keep falling with the 502 - Web server received an invalid response while acting as a gateway or proxy server. Error. The site works fine if accessed using http. 

The SSL cert has been imported and assigned in the ARR server to the single  IP address. There are no other SSL sites, just this one. The site works fine on HTTP. Works fine on HTTPS if you bypass the AAR server and go straight to the content server. Also works fine on the AAR server, (as in via IE on the actual ARR server).

What could be causing this error?

Also what should the URL rewrite rule be? say for the example the site is https://example.abc.com.

Thanks for your help

Currently I am facing a problem with ARR server

I have setup ARR 3.0 server (IIS7.5) frontend server  and App server (IIS7.5) backend server all content stored here

Issue is that if I access site in IIS APP server is working fine and showing all images and css. Whereas same site if we access thru ARR server  page is coming up but page is not loading fully

Environment:

• WIndows Server 2008R2
• IIS 7.5
• ARR 3
• enabled WS Federation Module

In web config i have a rule like this:

<rule name="grafana" stopProcessing="true">
<match url="(.*)" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Rewrite" url="http://192.168.xxx.xxx/{R:1}" />
</rule>

Applications do POST requests with form data type of request body and the server returned an invalid or unrecognized response. 

with failed request tracing  I get the following:

and then 

SET_RESPONSE_ERROR_DESCRIPTION 

<div id="section_errors_138_details" class="hidden">

</div>

The reason of invalid respone is empty request body after redirecting.

At start reques looks like this (not empty entity):

Buffer="from=-6h&until=now&target=randomWalk('random%20walk')&format=json&maxDataPoints=1920"

then url changed:

OldUrl="http://192.168.xx.xxx:xx/render", NewUrl="/graphite/render"

and finally i have empty request (with only headers and cookies): (and tcpdump confirms that) 

GENERAL_READ_ENTITY_START

BytesReceived="0", ErrorCode="Reached the end of the file.
 (0x80070026)"

I tried to increase both buffers in ARR settings but still the same 502.3 error.

My web.config

<?xml version="1.0" encoding="UTF-8"?><configuration><configSections><section name="system.identityModel" type="System.IdentityModel.Configuration.SystemIdentityModelSection, System.IdentityModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" /><section name="system.identityModel.services" type="System.IdentityModel.Services.Configuration.SystemIdentityModelServicesSection, System.IdentityModel.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" /></configSections><system.webServer><rewrite><rules><clear /><rule name="/elasticsearch" stopProcessing="true"><match url="^elasticsearch(.*)" /><conditions logicalGrouping="MatchAll" trackAllCaptures="false" /><action type="Rewrite" url="http://192.168.191.138:9200/{R:1}" /></rule><rule name="graphite" stopProcessing="true"><match url="^graphite(.*)" /><conditions logicalGrouping="MatchAll" trackAllCaptures="false" /><action type="Rewrite" url="http://192.168.191.138:82/{R:1}" /></rule> <rule name="grafana" stopProcessing="true"><match url="(.*)" /><conditions logicalGrouping="MatchAll" trackAllCaptures="false" /><action type="Rewrite" url="http://192.168.191.138/{R:1}" /></rule>            </rules></rewrite>	<modules runAllManagedModulesForAllRequests="true"><add name="WSFederationAuthenticationModule" type="System.IdentityModel.Services.WSFederationAuthenticationModule, System.IdentityModel.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" preCondition="managedHandler" /><add name="SessionAuthenticationModule" type="System.IdentityModel.Services.SessionAuthenticationModule, System.IdentityModel.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" preCondition="managedHandler" /></modules><security><requestFiltering><requestLimits maxUrl="20480" maxQueryString="10240" /><verbs></verbs></requestFiltering></security><httpErrors errorMode="Detailed" /><tracing><traceFailedRequests><add path="*"><traceAreas><add provider="ASP" verbosity="Verbose" /><add provider="ASPNET" areas="Infrastructure,Module,Page,AppServices" verbosity="Verbose" /><add provider="ISAPI Extension" verbosity="Verbose" /><add provider="WWW Server" areas="Authentication,Security,Filter,StaticFile,CGI,Compression,Cache,RequestNotifications,Module,FastCGI" verbosity="Verbose" /></traceAreas><failureDefinitions timeTaken="00:00:00" statusCodes="504" /></add></traceFailedRequests></tracing>        </system.webServer><system.identityModel><identityConfiguration><audienceUris><add value="https://edi-grafana.kontur.ru/" /></audienceUris><certificateValidation certificateValidationMode="None" /><issuerNameRegistry type="System.IdentityModel.Tokens.ConfigurationBasedIssuerNameRegistry, System.IdentityModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"><trustedIssuers><add thumbprint="A5686A15188253C513199353A3AD94C063E4F7D6" name="Passport" /></trustedIssuers></issuerNameRegistry><securityTokenHandlers><!-- machine key for session protection --><remove type="System.IdentityModel.Tokens.SessionSecurityTokenHandler, System.IdentityModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /><add type="System.IdentityModel.Services.Tokens.MachineKeySessionSecurityTokenHandler, System.IdentityModel.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /></securityTokenHandlers></identityConfiguration></system.identityModel><system.identityModel.services><federationConfiguration><wsFederation passiveRedirectEnabled="true" issuer="https://passport.skbkontur.ru/v2/issue/wsfed" realm="https://edi-grafana.kontur.ru/" /><cookieHandler requireSsl="false" /></federationConfiguration></system.identityModel.services><system.web><compilation debug="true" targetFramework="4.5" /><httpRuntime targetFramework="4.5" /><authentication mode="None" /><authorization><deny users="?" /></authorization><customErrors mode="Off" /></system.web></configuration>

Thanks for your help.

I've been running ARR for a while and have recently developed an api that relies heavily on the HTTP Reason Phrase / Status Description for error message handling.

It looks as though ARR strips the reason phrase however and replaces it with IIS standard. Is there any way to make ARR pass on the reason phrase that the content server sets?

E.g. if I GET an api url directly then I get the new reason phrase I set. It might be 

HTTP/1.1 200 HERE IT IS

But if I request that same resource through ARR it gets replaced with the standard

HTTP/1.1 200 OK

In Azure, would it be possible to point any number of domains at a certain IP and have the Application Request Routing determine which web role should be used to render the web page with a dynamic approach?

E.g. IIS is hit, it checks cache or a database and determines where website/role A or website/role B should be used and displays out the content? If so will there be any limitations to this or do they just work like any other website?

I'm in the first stages of investigating this and haven't found an example of whether this is even possible yet.

Thanks in advance.

Hi,

I have an edge server that is using ARR to route incoming hostname connections to other webservers (internal/development). All is working well except for a project that I am working on that uses ajax (dropzone.js) to upload a file to a webserver.

After approximately 2 minutes (for large files) IE throws the following error in the Development Tools console:

SCRIPT7002: XMLHttpRequest: Network Error 0x2eff, Could not complete the operation due to error 00002eff

I have tried setting the ARR > Proxy Settings > Timeout value to a larger figure than the default 120 seconds, as well as modifying the machine.config to include.

<httpRuntime executionTimeout="3600" />

But it doesn't seem to make any difference at all.

If I route all incoming web requests (via router port mapping) to my development server then the ajax upload completes without any errors, however this is not really an option as we are serving live intranet pages to employees which are hosted on another web server.

Hoping some guru can help me sort out what is happening. Please let me know if I have omitted any pertinent/relevant information.

Thanks in advance.

Hello,

We have two new Exchange 2013 servers, and two ARR servers which are load-balanced by Windows Network Load Balancing.

(the setup i have followed: http://blogs.technet.com/b/exchange/archive/2013/07/19/reverse-proxy-for-exchange-server-2013-using-iis-arr-part-1.aspx)

There are URL Rewrite rules created for the autodiscover.domain.com and the webmail.domain.com and everything work perfectly.

Now we have some applications which are sending SMTP requests over port 2525 instead of port 25 (cannot be changed to 25). 

Is it possible that ARR can do a Port redirection/mapping from port 2525 to 25, without a specific url? And if it is possible, how does it work?

I have been searching a lot for it but couldn't find a way to do this...

Thx!

Hello!

There are several web servers in server farm in ARR.

What is the difference between "make server unavailable immediately" and "take server offline" in ARR ?

I have a pretty common (I think) scenario.

I successfully got ARR redirecting requests for OWA via SSL. I had to install the UCC certificate on the IIS server and I set the bindings on Default Web Site for port 443 to the UCC cert. I had to setup ARR with a separate server farm for the Exchange server.

I have a website up and running on another internal server, and I have ARR setup to correctly route port 80 to it.
Now I need to have it SSL enabled. 

What are the steps?
Do I need to create another website in IIS on the ARR server? If so, what about ARR?
Or do I have to have the website use another port for SSL and then just setup another binding in IIS on the ARR server?

Email de projects virtual

I have a Windows 2008 server running IIS7 and I successfully installed the ARR Helper by turning UAC off. I can see the ARR Helper DLL listed in IIS's "Modules".

I am running an Apache website on a backend Windows 2008 R2 server.

I'm unable to get the IP passed from the originator - the IP logged always comes from the ARR server.

Wouldn't the ARR Helper be unaware of what's on the backend web server?
Any help in why it isn't working?

Right now I have ARR setup to pass http://www.domainname.com andhttps://www.domainname.com. This works as expected.

However, when I type in http://domainname.com, even though I have DNS set to go to the same IP, nothing is displayed.

I assume I need a URL Rewrite Rule to handle just http://domainname.com?

Can someone provide assistance please?

In my web farm, with 50 websites +/-, all of them using SSL Offloading, with 1 ARR Server and 2 IIS Nodes.

I have actually one site that don't work with SSL Offload (Classic ASP system), so i disabled SSL Offload, and installed it certificate on IIS Nodes. Works fine when i discover that i can't enable SNI on my IIS Nodes, because the ARR can't find the site, and i have an 502.3 - Bad Gateway error.

To work with it, i disabled "Request Server Name Identification" on my IIS Cluster, and with that the system works great. Until now.

I have to put another system that don't work with SSL Offloading. But on my IIS Cluster, i can't put more that one site using SSL without using SNI.

The website has an variable named "URL". The system OR work 100% HTTPS OR 100% HTTP. With SSL Offloading, we have a "hybrid" schema, as the first part is HTTPS and the second part is HTTP. In theory, i just need to turn off SSL Offloading, and it's allright. But with 2 websites, the ARR not work with SNI, so it can't bind HTTPS://SITE1 and HTTPS://SITE2. 

Why ARR can't work with SNI? I put the Rewrite rule as "Route to Server Farm", but only works with the first site that i bind it with HTTPS. I tried to do some "trick" on IIS Node, to redirect the "internal call" from 80 to 443 or 443 to 80, but all failed.

Any suggestion? Thanks!

Hi Everyone,..

I planned to publish Exchange 2013 through IIS ARR server, but I've had trouble finding any data on CPU / memory usage for a dedicated ARR server based on Microsoft recommendation. There are 8000 users that will be access from ARR. and ARR server will running on Windows Server 2012 R2.

Hopefully you can help for sizing so there isn't bottleneck on that server.

Thanks

~IH~

Hello!

We have a problem to transfer integrated windows authentication from IE to the web site page through an ARR.

We have:

1. Web Site, which is configured on my development PC (Windows 7 x64, IIS 7.5). PC name is MyServer, DNS name is MyServer.company.lan: 1.1. Web Site authentication settings: - Windows Authentication = enabled (Extended Protection = Off; Enable Kernel mode-authentication = checked; Enabled Providers = Negotiate, NTLM) - Basic Authentication = enabled - ASP.NET impersonation = enabled (Identity to impersonate = Authenticated user) - Anonymous Authentication = disabled 1.2. Web Site AppPool: - Managed  Pipeline Mode = Integrated - .NET Framework = 4.0.30319 - Identity = MyDomain\MyPoolUserAccount (have all access rights including impersonation) 1.3. Test page /1.aspx: < %@ Page Language="C#"%> UserName=<%=System.Security.Principal.WindowsIdentity.GetCurrent().Name%>

2. ARR (Windows Server 2008 R2, IIS 7.5). Server name = ARR0, DNS = MyARRServer.company.lan: 2.1. Default Web Site AppPool: - Managed  Pipeline Mode = Integrated - .NET Framework = 4.0.30319 - Identity = Network Service 1.3. Default Web Site URL rewrite rules: < rewrite>   <rules>     <rule name="MyServer" stopProcessing="true">       <match url="test1" />       <action type="Rewrite" url="http://MyServer/1.aspx" />     </rule>   </rules> < /rewrite>

3. Domain controller run in 2003 compatibility mode.

4. SPN settings on MyServer: setspn -F -Q */MyServer Checking forest DC=company,DC=root CN=MyServer,OU=CompanyOffice,OU=Computers,DC=company,DC=lan         HTTP/MyServer.company.lan         MSSQLSvc/MyServer.company.lan:SQLEXPRESS         TERMSRV/MyServer        TERMSRV/MyServer.company.lan         RestrictedKrbHost/MyServer         HOST/MyServer         RestrictedKrbHost/MyServer.company.lan         HOST/MyServer.company.lan setspn -L MyDomain\MyPoolUserAccount Registered ServicePrincipalNames for CN=MyPoolUserAccount,OU=Services,OU=Soft,OU=Special,DC=company,DC=lan:        HTTP/MyServer.company.lan         HTTP/MyARRServer         HTTP/MyARRServer.company.lan

Simple test. Run IE on MyServer, go to http://MyServer/1.aspx and get: UserName=MyDomain\MyAccount. Everything is OK.

ARR test. Run IE on MyServer, go to http://MyARRServer/test1 and get IE security dialog "Connecting to ARR0...", MyDomain\MyAccount and ask me to enter password. NOT OK. Enter password, but this dialog appears again.

If I disable Integrated Windows Authentication in IE and use basic authentication, then http://MyARRServer/test1 gives me correct result: UserName=MyDomain\MyAccount.

What's wrong with my configuration and settings to use ARR with integrated windows authentication on the web site?

I used http://blogs.msdn.com/b/asiatech/archive/2011/10/26/iis-7-kerberos-authentication-failure-krb-ap-err-modified.aspx to do this settings, but no success.

I added custom Request Header to my requests for example X-End-Point : endpoint1

every request that contain this Request header must send to specific server (localhost:123) . how can i do that with IIS ARR reverse proxy .

is it Possible ?

how to write outbond rule, if i want to replace  one word to another in response content ?

is it possible ?

some scripts of proxied server have code, with urls in variables :

for example:

function newway() {

var newway = '/webmail/form.html'

window.location = newway

}

i need to change response to

var newway = '/payroll/form.html'

imagine, there is no way to change code on proxied server  

Hi, 

To continue this post (its locked and cannot be unlocked).

http://forums.iis.net/t/1215067.aspx?Future+featured+improvements+for+ARR

We have two Web role applications deployed in separate Windows Azure Cloud services. One is regular application services (e.g. app.domain.net) while the other is like a federated identity service (e.g. identity.domain.net).

Clients connect to the identity service to initialise the typical authentication sequence with HTTP redirects to various identity providers (e.g. Facebook, LinkedIn, Twitter, etc) on their OAuth URLs. Once authenticated and authorised on their preferred identity provider, the clients get redirect back to our callback URLs to complete the OAuth sequence in the backend before redirecting them back to our main site (e.g. app.domain.net)

Now we are experimenting a different infrastructure layout; both web apps will be consolidated into asingle Cloud service, single Web role, but with multiple sites. The down side of this setup is one site has to yield port 80/443 and take on custom ports; the identity service yielded. In order make things transparent to clients, requests for identity.domain.net are proxied via app.domain.net site so that regular port 80/443 access is still possible.

We tried this approach using IIS ARR and URL Rewrite. The inbound rule seemed easy enough to setup (e.g. send certain /path* requests to custom localhost:82). However on testing the OAuth redirect sequences it appears that AAR is rewriting the HTTP 302 headers

What should have been redirecting to say

https://www.facebook.com/dialog/oauth?client_id={0}&amp;redirect_uri={1}{2}

gets rewritten into

http://ARRSERVER/dialog/oauth?client_id={0}&amp;redirect_uri={1}{2} (app.domain.net in this case)

This is undesirable behaviour and should not happen; ARR should just let through the original HTTP 302 headers. I do not see anything in the IIS URL Rewrite interface that can control this; how can this behaviour be adjusted?