WCF Webapi UriTemplate with file extension works local but not on IIS7

Question

I have a WCF WebApi Rest service that has the following endpoints:

[WebGet(UriTemplate = "{id}")]

and

[WebGet(UriTemplate = "{id}.pdf")]

The first endpoint returns JSON and the second endpoint returns a pdf. Both of these endpoints work in my local environment, but the pdf endpoint returns a 404 on the server running IIS7.

Is there some sort of setup IIS7 that is needed in order for the route to get executed?

Answer 1

I found the solution to this problem. It is a simple web.config addition:

<system.webServer>
  <handlers>
      <add name="PDFHandler-Integrated-4.0" path="*.pdf" verb="GET" type="System.Web.Handlers.TransferRequestHandler" resourceType="Unspecified" preCondition="integratedMode" />
  </handlers>
</system.webServer>

Answer 2

You might need to add .pdf to the MIME TYPE's in IIS

try adding file extension .PDF with a type of application/octet-stream

http://technet.microsoft.com/en-us/library/cc725608%28v=ws.10%29.aspx

UPDATE

To return a dynamically generated PDF directly using something like itextsharp:

[WebGet(UriTemplate = "GetPDF/{id}")]        
public void GetPDF(int id)
        {
        Invoice i = InvoiceData.GetInvoiceByID(id);
        MyApp.Data.Export.PDF pdf = new MyApp.Data.Export.PDF();
        byte[] data = pdf.generatePDFBytes(id);

        Response.Clear();
        Response.AddHeader("content-disposition", "attachment;filename=\"" + i.InvoiceNumber + ".pdf" + "\"");
        Response.ContentType = "application/pdf";
        Response.BinaryWrite(data.ToArray());
        Response.End();
    }