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• 09-15-2009, 4:56 AM

  Mark S. Rasmussen Joined on 09-10-2009, 3:57 AM Posts 9

  Uploads fail / timeout Reply Contact We allow our users to upload files to our system through a Flash uploading application. If I request the sites on the servers directly, everything works as it should. If I request the site through the ARR load balancer the uploads timeout after about 2 minutes. Downloads work as expected. This is my configuration:      <webFarms>         <webFarm name="iPaper" enabled="true">             <server address="MGM" enabled="true" />             <server address="MANDALAY" enabled="true" />             <applicationRequestRouting>                 <protocol timeout="01:00:00" includePortInXForwardedFor="false">                     <cache enabled="false" />                 </protocol>                 <affinity useCookie="true" cookieName="IPARRAffinity" />             </applicationRequestRouting>         </webFarm>         <applicationRequestRouting>             <hostAffinityProviderList>                 <add name="Microsoft.Web.Arr.HostNameRoundRobin" />                 <add name="Microsoft.Web.Arr.HostNameMemory" />             </hostAffinityProviderList>         </applicationRequestRouting>     </webFarms> No rewriting is being done and caching is disabled. I imagine the <protocol timeout> attribute defines the timeout for downloads. Is there anywhere I can set the timeout setting for incoming requests? Thanks! Mark S. Rasmussen

  Tags: IIS7 ARR

• 09-15-2009, 9:52 AM

  In reply to

  anilr Joined on 05-23-2006, 10:13 PM Redmond, WA Posts 2,343	Re: Uploads fail / timeout Reply Contact Can you collect failed request trace for the request that times out and send me the logs at anil (dot) ruia (at) microsoft (dot) com - make sure that the RequestRouting area is selected among the areas under WWW Server for your trace rule. Anil Ruia Senior Software Design Engineer IIS Core Server

• 09-16-2009, 4:23 AM

  In reply to

  Mark S. Rasmussen Joined on 09-10-2009, 3:57 AM Posts 9

  Re: Uploads fail / timeout Reply Contact Hi Anil, I've tried setting up FREB to catch the request traces, but I'm unable to do so. Apparently the request is never received / handled properly. By making a console app perform the request manually I'm able to see the actual error: Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host. This error only occurs when going through the ARR machine, if I circumvent it by switching IP's in the hosts file, everything works fine. On the ARR machine I've set the maxRequestLength & executionTimeout values as I thought those might have a say, but they don't seem to affect the issue. <httpRuntime maxRequestLength="2097151" executionTimeout="3600"/> I'm suspecting this is probably a configuration setting in the IIS that may not be related to ARR, though it manifests itself in the missing ARR reply. Let me know if I can give any further info that may help. Thanks.

• 09-16-2009, 9:19 AM

  In reply to

  Mark S. Rasmussen Joined on 09-10-2009, 3:57 AM Posts 9

  Re: Uploads fail / timeout Reply Contact I've solved the issue. By enabling normal IIS logging on both the content servers as well as the ARR machine I was able to see that the request never reached the content servers. Looking through the ARR machine I noted that a 404 status was returned - a 404.13 specifically. Looking through the documentation it quickly became apparent that request filtering was the issue. The request was quenched by requets filtering before reaching the URL Rewriting / ARR module and was thus completely unrelated to ARR. Upping the request filtering request length solved the problem.