Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

IHttpModule not getting called

Posted on 2009-07-09
6
Medium Priority
?
611 Views
Last Modified: 2013-11-30
Put simply, is there any reason why an IHttpModule would not get called for requests for script files?  My module is set to gzip compress all JSON responses, and also all script files.  It works perfectly locally, but when I deploy it to my shared hosting account, it **only works for the JSON responses**.

Is there some IIS setting that they might have to cause requests for these files to bypass my HttpModule somehow?

Thanks!
0
Comment
Question by:ARACK04
  • 3
  • 3
6 Comments
 

Author Comment

by:ARACK04
ID: 24813775
Also, here's the complete code for my module:
using System;
using System.IO;
using System.IO.Compression;
using System.Globalization;
using System.Web;
 
 
public class JsonCompressionModule : IHttpModule {
    public JsonCompressionModule() {
    }
 
    public void Dispose() {
    }
 
    public void Init(HttpApplication app) {
        app.PreRequestHandlerExecute += new EventHandler(Compress);
    }
 
    private void Compress(object sender, EventArgs e) {
        HttpApplication app = (HttpApplication)sender;
        HttpRequest request = app.Request;
        HttpResponse response = app.Response;
 
        if (request.ContentType.ToLower(CultureInfo.InvariantCulture).StartsWith("application/json") ||
            request.Url.ToString().Contains(".js")) {
 
            if (!((request.Browser.IsBrowser("IE")) && (request.Browser.MajorVersion <= 6))) {
                string acceptEncoding = request.Headers["Accept-Encoding"];
 
                if (!string.IsNullOrEmpty(acceptEncoding)) {
                    acceptEncoding = acceptEncoding.ToLower(CultureInfo.InvariantCulture);
 
                    if (acceptEncoding.Contains("gzip")) {
                        response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);
                        response.AddHeader("Content-encoding", "gzip");
                    } else if (acceptEncoding.Contains("deflate")) {
                        response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);
                        response.AddHeader("Content-encoding", "deflate");
                    }
                }
            }
        }
    }
}

Open in new window

0
 
LVL 13

Accepted Solution

by:
crazyman earned 2000 total points
ID: 24814294
Script files are static content, and wont be mapped in iis to the asp.net runtime, therefore the request will never hit asp.net let alone your HttpModule.

You may append .js.aspx and they will come through asp.net but you will need to work your handler into mapping that to the correct phyical file...
0
 
LVL 13

Expert Comment

by:crazyman
ID: 24814332
This window in IIS controls what file extensions map to what, you can add to these as you wish.
IIS.gif
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 

Author Comment

by:ARACK04
ID: 24814412
Genius, thanks!

Why did it work in localhost though?  Are requests through localhost not capable of knowing what's static, and just send everything through the ASP.NET runtime?
0
 

Author Comment

by:ARACK04
ID: 24814522
Instead of .js.aspx, couldn't I just add .js to the extensions handled by .NET directly?  Also, if I did that, would it still work for requests with a querystring added on, like

foo.js?ver=1.6    

I would assume so since requests like that still work for .aspx files.

Thanks for putting up with this simple (probably stupid) question!
0
 
LVL 13

Expert Comment

by:crazyman
ID: 24815051
It works on localhost because the development server in visual studio routes all traffic through the runtime.

You could indeed map .js to asp.net and handle them there.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article will inform Clients about common and important expectations from the freelancers (Experts) who are looking at your Gig.
This article is in regards to the Cisco QSFP-4SFP10G-CU1M cables, which are designed to uplink/downlink 40GB ports to 10GB SFP ports. I recently experienced this and found very little configuration documentation on how these are supposed to be confi…
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…

926 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question