ASP.NET custom HttpHandler in IIS 7, 7.5

Question

My web.config is setup as following. My handler lives in an assembly called TestProject.Custom. I am calling this handler via jQuery post, works great in VS 2010 (of course!) but when I push it out to IIS 7.5 or IIS 7, it throws 404 about not being able to find TestHandler.ashx. Not sure what I am missing.

<system.webServer>
<validation validateIntegratedModeConfiguration="false" />

<handlers>
  <add name="TestHandler"
       verb="*" preCondition="integratedMode"
       path="TestProject.Custom.HttpHandlers.TestHandler.ashx"
       type="TestProject.Custom.HttpHandlers.TestHandler, TestProject.Custom"/>

</handlers>

Edit: I am calling this handler with jQuery and the handler is behind forms authentication (which I don't think is the problem):

jQuery(function () {
    jQuery.ajax({
        type: "POST",
        url: "TestHandler.ashx",
        data: { "test_data": "some test data" }
    });
});

score 1 · Accepted Answer · answered Feb 24 '12 at 05:37

1

I think the "path" attribute should be "TestHandler.ashx" instead of its current value. It must match the URL you use in jQuery. Otherwise, 404 is expected.

answered Feb 24 '12 at 05:37

Lex Li

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This was it. There was some other problem that was causing it to not work. – codelove Feb 25 '12 at 01:23

swannee · Answer 2 · 2012-02-24T05:28:05.147

0

404 usually means a problem with the registration, basically it just can't find something to handle the request that came in.

Inside of the add node, try adding the following attribute at the end: resourceType="Unspecified"

That tells IIS not to look for a physical file when it sees the request for the ashx. I think that's causing the 404

edited Feb 24 '12 at 05:28

answered Feb 24 '12 at 05:21

swannee

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Unspecified is the default value, so you can safely omit that attribute, http://www.iis.net/ConfigReference/system.webServer/handlers/add – Lex Li Feb 24 '12 at 05:37

ASP.NET custom HttpHandler in IIS 7, 7.5

2 Answers2