Tipo de mimo de manifiesto no válido cuando se sirve a través del controlador ashx

I'm generating my cache manifest on the fly in a handler, setting the content type to "text/cache-manifest". However when i'm loading my cached page in Chrome i get the following error in Chrome's console (note empty string in brackets), and the files are never updated:

Application Cache Error event: Invalid manifest mime type () http://localhost:4010/WebClient/CacheManifest.ashx

This was working fine before for almost a year, and how suddenly started happening.

¿Alguna idea?

Here's the code-behind for CacheManifest.ashx:

public class CacheManifest : IHttpHandler
    public bool IsReusable
            return true;

    public void ProcessRequest(HttpContext context)
        HttpResponse response = context.Response;
        response.ContentType = "text/cache-manifest";

        StringBuilder output = new StringBuilder();

        output.AppendLine("CACHE MANIFEST");

        // here's the code that loads files from disk and adds to manifest.

        // allow online resources

        output.AppendFormat("# hash: {0}", GetContentHash());


preguntado el 01 de febrero de 12 a las 03:02

1 Respuestas

Base on my testing, it's due to localhost. The web browser is no able to download it from localhost. When I do a deployment to production (real webserver in the web), it works flawlessly.

Respondido 11 Oct 12, 11:10

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