How to enable double escaping in .net core webapi?

Question

I have issue with my webapi.

All commands works fine until in adress i have + or %2B.

When i try to do this, i always getting:

HTTP Error 404.11 - Not Found

I don't have experience in IIS configuration (i am green in it), and don't see any configuration file inside project.

Possible duplicate of https://stackoverflow.com/questions/11964287/http-error-404-11-not-found-double-escape-sequence — Arib Yousuf, Mar 16 '21 at 13:45

Rena · Accepted Answer · 2021-03-17T05:13:53.737

3

For cannot use plus symbol in route,this is an IIS issue:

Please look at the following post:

double escape sequence inside a url : The request filtering module is configured to deny a request that contains a double escape sequence

You need add the following section in your web.config:

<?xml version="1.0" encoding="utf-8"?>
<configuration> 
  <system.webServer>
    <security>
      <requestFiltering allowDoubleEscaping="true" />
    </security>
  </system.webServer>
</configuration>

Result:

Note:

If you do not have web.config file in your project,you could follow the steps to create it:

1.Right-click your project->choose Add->choose New Item:

2.Search config in search bar->choose Web Configuration File:

edited Mar 17 '21 at 05:13

answered Mar 17 '21 at 01:40

Rena

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But where is that web.config? I Can't find it inside my project. – Obyi Mar 17 '21 at 05:11
1

Hi @Obyi,check my answer.And remember accept answer in your [previous thread](https://stackoverflow.com/a/66650060/11398810). – Rena Mar 17 '21 at 05:14
Thanks! Now i figured out how to fix it! – Obyi Mar 17 '21 at 06:55

How to enable double escaping in .net core webapi?

1 Answers1