FeeProvider crashes IIS

Gaetan Di Caro

Posted on 14/07/2015 11:41:04

Hello,

I have written a feeprovider for our new shop. It does work absolutely fine in local, however when I copy the project DLL on the server, it makes IIS crash with this error :

Faulting application name: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7afa2

Faulting module name: nlssorting.dll, version: 4.0.30319.18408, time stamp: 0x52310504

Exception code: 0xc00000fd

Fault offset: 0x000000000000440f

Faulting process id: 0x12bc

Faulting application start time: 0x01d0be063ca4c302

Faulting application path: c:\windows\system32\inetsrv\w3wp.exe

Faulting module path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\nlssorting.dll

Report Id: 8302f72a-29f9-11e5-8e91-005056bd5e51

Unfortunately I haven't been able to find more detailed info on the error, windows isn't very detailed about this. If I comment my feeprovider, it works fine, so I know it comes from there, but I cannot see the problem.

Here is the code, it is pretty straightforward :

public class FreeShippingProcessing : FeeProvider
{
   public override PriceRaw FindFee(Order Order)
   {
       PriceRaw returnFee = null;

       try
       {
           User user = User.get_Current(PagePermissionLevels.Frontend);
           string val = string.Empty;

           if (user != null)
           {
               Context.Cart.ShippingMethodID = Shipping.getAllShippingmethods().FirstOrDefault(x => x.Name == "BKI").ID;

               if (Context.Cart.TotalPriceWithoutTaxes.Price >= 1900)
               {
                   returnFee = new PriceRaw(0.00, Order.Currency);
               }
               else
               {
                   CustomFieldValue discountCode = user.CustomFieldValues.FirstOrDefault(x => x.CustomField.SystemName == "AccessUser_Fakturarabatkode");
                   if (discountCode != null && discountCode.Value != null)
                   {
                       val = discountCode.Value.ToString().Trim();

                       if (val != "99")
                       {
                           returnFee = new PriceRaw(0.00, Order.Currency);
                       }
                   }
               }
           }
       }
       catch (Exception e)
       {
           LogToFile.Log(e.Message, "FindFee", LogToFile.LogType.ManyEntriesPerFile);
           LogToFile.Log(e.StackTrace, "FindFee", LogToFile.LogType.ManyEntriesPerFile);
           return null;
       }

return returnFee;
}
}

Notice the log inside the catch... but nothing gets logged.

Anyone has an idea ?

Thank you !

Replies

Morten Snedker

Posted on 14/07/2015 14:25:14

Can you try and build your VS-project with 4.5.1 as your target framework....

If problem still occurs, please post the error from IIS once again.

/Snedker

Morten Snedker

Posted on 14/07/2015 14:27:16

ALSO: please check: is your 404 page (in Dynamicweb) unpublished? If so, please publish it.

/Snedker

Gaetan Di Caro

Posted on 14/07/2015 14:27:29

Hi Morten,

I already build it using 4.5.1.

Thanks !

Gaetan Di Caro

Posted on 14/07/2015 14:43:24

I haven't set a custom 404 page for this website.

Thanks !

Gaetan Di Caro

Posted on 16/07/2015 08:03:32

I've checked the IIS configuration between my computer and the server, but I don't see any obvious difference. They both run NET 4.0

Gaetan Di Caro

Posted on 27/07/2015 08:34:46

I have managed to find the line of code which causes the problem. The problem occurs when I call Context.Cart.TotalPriceWithoutTaxes.

This makes .NET crash, and doesn't if I comment the line with TotalPriceWithoutTaxes :

PriceRaw returnFee = null;

            try
            {
                User user = User.get_Current(PagePermissionLevels.Frontend);
                string val = string.Empty;

                if (user != null)
                {
                    //BKIShop
                    if (Context.Cart.ShopID == "SHOP7")
                    {
                        Context.Cart.ShippingMethodID = Shipping.getAllShippingmethods().FirstOrDefault(x => x.Name == "BKI").ID;

var price = Context.Cart.TotalPriceWithoutTaxes;

                /* Snip rest of comments */
                    }
            }
            catch (Exception e)
            {
                LogToFile.Log(e.Message, "FindFee", LogToFile.LogType.ManyEntriesPerFile);
                LogToFile.Log(e.StackTrace, "FindFee", LogToFile.LogType.ManyEntriesPerFile);
                return null;
            }

return returnFee;
}

Any idea of what to do ? I'm quite stumped.

Thanks !

Gaetan Di Caro

Posted on 27/07/2015 09:04:59

Also tried to update all the dlls with the ones from the dynamicweb release it uses (8.5.1.9), but to no avail.

Gaetan Di Caro

Posted on 27/07/2015 11:57:42

Ok after talking with Lars Hejgaard Sørensen we fixed it. We suppose that TotalPriceWithoutTaxes calls the feeprovider, resulting in an infinite loop. One solution is to add a lock :

if (System.Web.HttpContext.Current.Items.Contains("Busy"))
{
return null;
}

System.Web.HttpContext.Current.Items.Add("Busy", true);

// Do stuff

System.Web.HttpContext.Current.Items.Remove("Busy");

However in this case we just removed the comparison to the price and directly used the dynamicweb administration of the shipping for that.

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FeeProvider crashes IIS

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