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POMVC controller action is called twice
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  1. POMVC controller action is called twice
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    copied!<p>On IIS 7 server with my ASP.NET MVC 3 application, I am encountering the following problem: when I have an action taking rather long time to complete (like 30 seconds), it will get fired for the second time after cca 15-20 seconds from the first request. I can see in Fiddler (HTTP sniffer) that the browser is not the culprit - it only sends the request once. However, in IIS log files, I can see the request twice. However, in IIS logs, both requests have the same timestamp (not in my own log files - there the two requests are separated by those 15-20 seconds).</p> <p>Originally, the action was processing an uploaded file, storing it in the database etc..However, even after I changed the action to just call <code>Thread.Sleep(30000)</code>, it is still called twice.</p> <p>It is not caused by some malfunctioning JavaScript or missing-image references which seem to be the common reasons for this behavior as I read through similar problems here on StackOverflow. I cannot replicate this on the development ASP.NET server, only on the IIS server and just on one of two I use.</p> <p>This is the HTML form used to trigger that action</p> <pre><code>@model TMAppServer.Abstract.DataTransferObject.ProjectOverviewData @{ Layout = null; } &lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;UploadTestForm&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;div&gt; @using (Html.BeginForm("UploadFileNew", "Manager", new { targetLanguage = "CS" }, FormMethod.Post, new { enctype = "multipart/form-data" })) { &lt;input id="files" type="file" name="files" /&gt;&lt;text&gt;&lt;input type="submit" id="uploadFile" value="Upload the document..." /&gt;&lt;input type="hidden" name="projectId" id="projectId" value="@(Model.Job.Name)" /&gt; } &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>This is the controller action:</p> <pre><code>public ActionResult UploadFileNew(string projectId, string targetLanguage, IList&lt;HttpPostedFileBase&gt; files) { foreach (var file in files) { if (null == file) continue; Thread.Sleep(30000); } return RedirectToAction("GetProjectOverview", new { projectId = projectId }); } </code></pre> <p>Thank you for any suggestions.</p> <p><strong>EDIT: Now I found out that this only happens when I access the server via its domain name from the same network (like server.domain.com), it does NOT happen when accessing the server via its IP address or from an outside network.</strong></p> <p>This is what I get in the IIS logs:</p> <pre><code>2011-07-21 01:23:31 W3SVC2 WIN-AD50B4LJ2SU 192.168.1.48 POST /manager/upload-file projectId=3366 80 - 192.168.1.1 HTTP/1.1 Mozilla/5.0+(Windows+NT+6.1;+WOW64;+rv:5.0.1)+Gecko/20100101+Firefox/5.0.1 .ASPXAUTH=cookie http://tm.web.com/manager/projects/3366/overview tm.web.com 302 0 0 440 6232309 578 2011-07-21 01:23:31 W3SVC2 WIN-AD50B4LJ2SU 192.168.1.48 GET /manager/projects/3366/overview - 80 - 192.168.1.1 HTTP/1.1 Mozilla/5.0+(Windows+NT+6.1;+WOW64;+rv:5.0.1)+Gecko/20100101+Firefox/5.0.1 .ASPXAUTH=cookie http://tm.web.com/manager/projects/3366/overview tm.web.com 200 0 0 30125 769 93 2011-07-21 01:23:31 W3SVC2 WIN-AD50B4LJ2SU 192.168.1.48 POST /manager/upload-file projectId=3366 80 - 192.168.1.1 HTTP/1.1 Mozilla/5.0+(Windows+NT+6.1;+WOW64;+rv:5.0.1)+Gecko/20100101+Firefox/5.0.1 .ASPXAUTH=cookie http://tm.web.com/manager/projects/3366/overview tm.web.com 302 0 64 0 6232309 39406 </code></pre> <p>And these are my routes in Global.asax.cs</p> <pre><code>public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute(null, "manager/upload-file", new { controller = "Manager", action = "UploadFile" }, new { httpMethod = new HttpMethodConstraint("POST") } ); routes.MapRoute(null, "manager/projects/{projectId}/overview", new { controller = "Manager", action = "GetProjectOverview" }, new { httpMethod = new HttpMethodConstraint("GET") } ); routes.MapRoute(null, "manager/{action}", new { controller = "Manager", action = "Main" }, new { httpMethod = new HttpMethodConstraint("GET") } ); routes.MapRoute("Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Manager", action = "ListProjects", id = UrlParameter.Optional } // Parameter defaults ); } </code></pre>
 

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