CODEWITHSUNDEEP
asp.net-mvcgzip
Captain0
Captain0

Reputation: 2613

GZip compression from code

Is there anyway I can do dynamic GZip compression from code, when the module is not installed on a IIS Server ? My hosting company does not want to install this module on the server, still waiting for a reason from them.

I checked locally it can help me allot when dynamic compression is allowed.

kind regards

Upvotes: 1

Views: 896

Answers (1)

Cybermaxs
Cybermaxs

Reputation: 24558

You can achieve this using an action filter.

public class CompressFilter : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        HttpRequestBase request = filterContext.HttpContext.Request;

        string acceptEncoding = request.Headers["Accept-Encoding"];

        if (string.IsNullOrEmpty(acceptEncoding)) return;

        acceptEncoding = acceptEncoding.ToUpperInvariant();

        HttpResponseBase response = filterContext.HttpContext.Response;

        if (acceptEncoding.Contains("GZIP"))
        {
            response.AppendHeader("Content-encoding", "gzip");
            response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);
        }
        else if (acceptEncoding.Contains("DEFLATE"))
        {
            response.AppendHeader("Content-encoding", "deflate");
            response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);
        }
    }
}

Add this attribute to the desired controllers 

[CompressFilter]
public class HomeController : Controller

or as a global filter.

public class FilterConfig
{
    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new CompressFilter());
    }
}

Note : for web ressources (Js & Css), I also highly suggest you to use bundling & minification.

Upvotes: 4

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