<%@ WebHandler Language="C#" Class="JSONPHandler" %>



using System;

using System.IO;

using System.Web;



public class JSONPHandler : IHttpHandler

{

	public void ProcessRequest (HttpContext context)

	{

		string callback = context.Request.QueryString["json"];

		string file = context.Request.QueryString["file"];

        

        try

		{

			context.Response.ContentType = "text/javascript";

			context.Response.AddHeader("X-Content-Type-Options", "nosniff");

			context.Response.Cache.SetLastModified(File.GetLastWriteTimeUtc(context.Server.MapPath(file)));

			context.Response.Cache.SetCacheability(HttpCacheability.Public);

			context.Response.Cache.SetSlidingExpiration(true);

			context.Response.Cache.SetExpires(DateTime.Now.AddDays(30));

			context.Response.Cache.SetMaxAge(TimeSpan.FromDays(30));

			context.Response.Cache.SetNoTransforms();

			

			if (!String.IsNullOrEmpty(callback))

			{

				//context.Response.Write("alert('hit');");

				context.Response.Write(callback + "(");

			}

			

			context.Response.TransmitFile(file);

			

			if (!String.IsNullOrEmpty(callback))

			{

				context.Response.Write(");");

			}

		}

		catch(FileNotFoundException)

		{

			context.Response.Clear();

			context.Response.StatusCode = 404;

		}

    }



    public bool IsReusable

	{

        get

		{

            return true;

        }

    }

}