ASP.NET MVC: How to handle 400 bad request error when url end with %

I am trying to handle all HTTP errors to my custom error pages, but I find that when there is a % at the end of url, i cannot use config setting or code to handle it,
for example: http://localhost/abc%
the response is:
Bad Request – Invalid URL
HTTP Error 400. The request URL is invalid.

So, can we use config setting or c# code to handle this error request?

Contents hide

Answers:

Method 1

Method 2

Answers:

Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & I’ll get back to you as soon as possible.

Method 1

Who said not possible?

Response.TrySkipIisCustomErrors = true;

<configuration>
  <system.webServer>
    <httpErrors existingResponse="PassThrough" />
  </system.webServer>
</configuration>

original post

Method 2

See this 4 part series for configuring custom error pages within IIS: http://www.dotnetscraps.com/dotnetscraps/post/Did-you-know-Enable-Custom-Error-in-IIS-7-75.aspx.

I personally prefer to use Application_Error event to log the errors and redirect user to custom error pages. Note that you need to use integrated pipe-line in IIS to catch all errors otherwise IIS will show its own error page for resources that are not served by ASP.NET.

EDIT:
Sorry for the wrong answer. I have XP machine currently that shows 404 for % sign so couldn’t verify above. Searching over internet, I found that it’s simply not possible to display custom error page for 400 status code. See this question from server fault for more information.

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

0 0 votes

Article Rating