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How many times you have seen this nasty error:
System.Web.dll!System.Web.StaticFileHandler.ProcessRequestInternal ... ...long stack trace ... A first chance exception of type 'System.Web.HttpException' occurred in System.Web.dll Additional information: File does not exist.
That is nearly impossible to debug if not tryng to decompile stuffs or other time consuming tasks like checking every single file of the project (that is really a hard work if you have to deal with a huge project)
Now i reached a solution, that is a simple custom httpHandler that can be added while debugging these issues, you can simply add it to your Web.Config and now you will find finally a true FileNotFoundException with the file you where desperately searching for!!!
Here is the code
using System;
using System.IO;
using System.Web;
/*
* Copyright (C) 2008-2010 by EDR.
* Written by EDR info@kendar.org
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
* To let this thing works you should add the following httpHandler to your
* Web.config, this way all static files will be intercepted by this "trasnparent"
* http handler that will throw exceptions if file are not found
<configuration>
<system.web>
<httpHandlers>
<add verb="*" path="*.gif" type="com.kendar.utils.DebugHttpHandler"/>
<add verb="*" path="*.jpg" type="com.kendar.utils.DebugHttpHandler"/>
<add verb="*" path="*.jpeg" type="com.kendar.utils.DebugHttpHandler"/>
<add verb="*" path="*.css" type="com.kendar.utils.DebugHttpHandler"/>
<add verb="*" path="*.htm" type="com.kendar.utils.DebugHttpHandler"/>
<add verb="*" path="*.html" type="com.kendar.utils.DebugHttpHandler"/>
<add verb="*" path="*.shtml" type="com.kendar.utils.DebugHttpHandler"/>
<add verb="*" path="*.png" type="com.kendar.utils.DebugHttpHandler"/>
<add verb="*" path="*.txt" type="com.kendar.utils.DebugHttpHandler"/>
<add verb="*" path="*.xml" type="com.kendar.utils.DebugHttpHandler"/>
</httpHandlers>
</system.web>
</configuration>
*/
namespace com.kendar.utils
{
/// <summary>
/// For debuggin purpose to find forgotten files, is a kind of wrapper to avoid seeking desperately for
/// unknown files
/// Should add some section to Web.config to intercept the various static files
/// configuration, for exeample to check allthe gif files:
/// -system.web
/// --httpHandlers
/// ---add verb="*" path="*.gif" type="com.kendar.utils.DebugHttpHandler"
/// </summary>
public class DebugHttpHandler : IHttpHandler //StaticFileHandler
{
/// <summary>
/// Process the request
/// </summary>
/// <param name="context"></param>
public void ProcessRequest(HttpContext context)
{
string objPath = HttpContext.Current.Request.MapPath(context.Request.FilePath);
string mimeType = DebugHttpHandler.DetectMime(objPath);
context.Response.ContentType = mimeType;
if (File.Exists(objPath))
{
FileStream fs = File.OpenRead(objPath);
DebugHttpHandler.CopyStreamToStream(fs, context.Response.OutputStream);
}
else
{
throw new FileNotFoundException(context.Request.FilePath);
}
}
/// <summary>
/// Is reusable always because is only a simple static file manager
/// </summary>
public bool IsReusable
{
get
{
return true;
}
}
/// <summary>
/// Write from stream to another stream
/// </summary>
/// <param name="sourceStream"></param>
/// <param name="targetStream"></param>
private static void CopyStreamToStream(FileStream sourceStream, Stream targetStream)
{
// What's the size of the source stream:
int size = (int)sourceStream.Length;
// Create a buffer that same size:
byte[] buffer = new byte[size];
// Move the source stream to the beginning:
sourceStream.Seek(0, SeekOrigin.Begin);
// copy the whole sourceStream into our buffer:
sourceStream.Read(buffer, 0, size);
// Write out buffer to the target stream:
targetStream.Write(buffer, 0, size);
}
/// <summary>
/// Detect some standard mime types
/// </summary>
/// <param name="objPath"></param>
/// <returns></returns>
private static string DetectMime(string objPath)
{
int typ = objPath.LastIndexOf('.');
string ext = "";
if (typ >= 0)
{
ext = objPath.Substring(typ);
}
switch (ext)
{
case ("323"): return "text/h323";
case ("asx"): return "video/x-ms-asf";
case ("acx"): return "application/internet-property-stream";
case ("ai"): return "application/postscript";
case ("aif"): return "audio/x-aiff";
case ("aiff"): return "audio/aiff";
case ("axs"): return "application/olescript";
case ("aifc"): return "audio/aiff";
case ("asr"): return "video/x-ms-asf";
case ("avi"): return "video/x-msvideo";
case ("asf"): return "video/x-ms-asf";
case ("au"): return "audio/basic";
case ("application"): return "application/x-ms-application";
case ("bin"): return "application/octet-stream";
case ("bas"): return "text/plain";
case ("bcpio"): return "application/x-bcpio";
case ("bmp"): return "image/bmp";
case ("cdf"): return "application/x-cdf";
case ("cat"): return "application/vndms-pkiseccat";
case ("crt"): return "application/x-x509-ca-cert";
case ("c"): return "text/plain";
case ("css"): return "text/css";
case ("cer"): return "application/x-x509-ca-cert";
case ("crl"): return "application/pkix-crl";
case ("cmx"): return "image/x-cmx";
case ("csh"): return "application/x-csh";
case ("cod"): return "image/cis-cod";
case ("cpio"): return "application/x-cpio";
case ("clp"): return "application/x-msclip";
case ("crd"): return "application/x-mscardfile";
case ("deploy"): return "application/octet-stream";
case ("dll"): return "application/x-msdownload";
case ("dot"): return "application/msword";
case ("doc"): return "application/msword";
case ("dvi"): return "application/x-dvi";
case ("dir"): return "application/x-director";
case ("dxr"): return "application/x-director";
case ("der"): return "application/x-x509-ca-cert";
case ("dib"): return "image/bmp";
case ("dcr"): return "application/x-director";
case ("disco"): return "text/xml";
case ("exe"): return "application/octet-stream";
case ("etx"): return "text/x-setext";
case ("evy"): return "application/envoy";
case ("eml"): return "message/rfc822";
case ("eps"): return "application/postscript";
case ("flr"): return "x-world/x-vrml";
case ("fif"): return "application/fractals";
case ("gtar"): return "application/x-gtar";
case ("gif"): return "image/gif";
case ("gz"): return "application/x-gzip";
case ("hta"): return "application/hta";
case ("htc"): return "text/x-component";
case ("htt"): return "text/webviewhtml";
case ("h"): return "text/plain";
case ("hdf"): return "application/x-hdf";
case ("hlp"): return "application/winhlp";
case ("html"): return "text/html";
case ("shtml"): return "text/html";
case ("htm"): return "text/html";
case ("stm"): return "text/html";
case ("hqx"): return "application/mac-binhex40";
case ("isp"): return "application/x-internet-signup";
case ("iii"): return "application/x-iphone";
case ("ief"): return "image/ief";
case ("ivf"): return "video/x-ivf";
case ("ins"): return "application/x-internet-signup";
case ("ico"): return "image/x-icon";
case ("jpg"): return "image/jpeg";
case ("jfif"): return "image/pjpeg";
case ("jpe"): return "image/jpeg";
case ("jpeg"): return "image/jpeg";
case ("png"): return "image/png";
case ("js"): return "application/x-javascript";
case ("lsx"): return "video/x-la-asf";
case ("latex"): return "application/x-latex";
case ("lsf"): return "video/x-la-asf";
case ("manifest"): return "application/x-ms-manifest";
case ("mhtml"): return "message/rfc822";
case ("mny"): return "application/x-msmoney";
case ("mht"): return "message/rfc822";
case ("mid"): return "audio/mid";
case ("mpv2"): return "video/mpeg";
case ("man"): return "application/x-troff-man";
case ("mvb"): return "application/x-msmediaview";
case ("mpeg"): return "video/mpeg";
case ("m3u"): return "audio/x-mpegurl";
case ("mdb"): return "application/x-msaccess";
case ("mpp"): return "application/vndcase.ms-project";
case ("m1v"): return "video/mpeg";
case ("mpa"): return "video/mpeg";
case ("me"): return "application/x-troff-me";
case ("m13"): return "application/x-msmediaview";
case ("movie"): return "video/x-sgi-movie";
case ("m14"): return "application/x-msmediaview";
case ("mpe"): return "video/mpeg";
case ("mp2"): return "video/mpeg";
case ("mov"): return "video/quicktime";
case ("mp3"): return "audio/mpeg";
case ("mpg"): return "video/mpeg";
case ("ms"): return "application/x-troff-ms";
case ("nc"): return "application/x-netcdf";
case ("nws"): return "message/rfc822";
case ("oda"): return "application/oda";
case ("ods"): return "application/oleobject";
case ("pmc"): return "application/x-perfmon";
case ("p7r"): return "application/x-pkcs7-certreqresp";
case ("p7b"): return "application/x-pkcs7-certificates";
case ("p7s"): return "application/pkcs7-signature";
case ("pmw"): return "application/x-perfmon";
case ("ps"): return "application/postscript";
case ("p7c"): return "application/pkcs7-mime";
case ("pbm"): return "image/x-portable-bitmap";
case ("ppm"): return "image/x-portable-pixmap";
case ("pub"): return "application/x-mspublisher";
case ("pnm"): return "image/x-portable-anymap";
case ("pml"): return "application/x-perfmon";
case ("p10"): return "application/pkcs10";
case ("pfx"): return "application/x-pkcs12";
case ("p12"): return "application/x-pkcs12";
case ("pdf"): return "application/pdf";
case ("pps"): return "application/vndcase.ms-powerpoint";
case ("p7m"): return "application/pkcs7-mime";
case ("pko"): return "application/vndms-pkipko";
case ("ppt"): return "application/vndcase.ms-powerpoint";
case ("pmr"): return "application/x-perfmon";
case ("pma"): return "application/x-perfmon";
case ("pot"): return "application/vndcase.ms-powerpoint";
case ("prf"): return "application/pics-rules";
case ("pgm"): return "image/x-portable-graymap";
case ("qt"): return "video/quicktime";
case ("ra"): return "audio/x-pn-realaudio";
case ("rgb"): return "image/x-rgb";
case ("ram"): return "audio/x-pn-realaudio";
case ("rmi"): return "audio/mid";
case ("ras"): return "image/x-cmu-raster";
case ("roff"): return "application/x-troff";
case ("rtf"): return "application/rtf";
case ("rtx"): return "text/richtext";
case ("sv4crc"): return "application/x-sv4crc";
case ("spc"): return "application/x-pkcs7-certificates";
case ("setreg"): return "application/set-registration-initiation";
case ("snd"): return "audio/basic";
case ("stl"): return "application/vndms-pkistl";
case ("setpay"): return "application/set-payment-initiation";
case ("shar"): return "application/x-shar";
case ("sh"): return "application/x-sh";
case ("sit"): return "application/x-stuffit";
case ("spl"): return "application/futuresplash";
case ("sct"): return "text/scriptlet";
case ("scd"): return "application/x-msschedule";
case ("sst"): return "application/vndms-pkicertstore";
case ("src"): return "application/x-wais-source";
case ("sv4cpio"): return "application/x-sv4cpio";
case ("tex"): return "application/x-tex";
case ("tgz"): return "application/x-compressed";
case ("t"): return "application/x-troff";
case ("tar"): return "application/x-tar";
case ("tr"): return "application/x-troff";
case ("tif"): return "image/tiff";
case ("txt"): return "text/plain";
case ("texinfo"): return "application/x-texinfo";
case ("trm"): return "application/x-msterminal";
case ("tiff"): return "image/tiff";
case ("tcl"): return "application/x-tcl";
case ("texi"): return "application/x-texinfo";
case ("tsv"): return "text/tab-separated-values";
case ("ustar"): return "application/x-ustar";
case ("uls"): return "text/iuls";
case ("vcf"): return "text/x-vcard";
case ("wps"): return "application/vndcase.ms-works";
case ("wav"): return "audio/wav";
case ("wrz"): return "x-world/x-vrml";
case ("wri"): return "application/x-mswrite";
case ("wks"): return "application/vndcase.ms-works";
case ("wmf"): return "application/x-msmetafile";
case ("wcm"): return "application/vndcase.ms-works";
case ("wrl"): return "x-world/x-vrml";
case ("wdb"): return "application/vndcase.ms-works";
case ("wsdl"): return "text/xml";
case ("xml"): return "text/xml";
case ("xlm"): return "application/vndcase.ms-excel";
case ("xaf"): return "x-world/x-vrml";
case ("xla"): return "application/vndcase.ms-excel";
case ("xls"): return "application/vndcase.ms-excel";
case ("xof"): return "x-world/x-vrml";
case ("xlt"): return "application/vndcase.ms-excel";
case ("xlc"): return "application/vndcase.ms-excel";
case ("xsl"): return "text/xml";
case ("xbm"): return "image/x-xbitmap";
case ("xlw"): return "application/vndcase.ms-excel";
case ("xpm"): return "image/x-xpixmap";
case ("xwd"): return "image/x-xwindowdump";
case ("xsd"): return "text/xml";
case ("z"): return "application/x-compress";
case ("zip"): return "application/x-zip-compressed";
default: return "application/octet-stream";
}
}
}
}
Good Coding!!