![Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers image 5 1 - Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers](https://eniskurtayyilmaz.com/wp-content/uploads/2019/08/image-5-1.png)
Solved: .NET Core Doesn’t Pass Non ASCII Characters In Response Headers
I’m coding a new project in .NET Core Web API. (Dotnet Version: 2.2.401)
I decided that If there is something wrong in the Web API, I can show them (the visitors) “What happened in Web API” in response body. But first, I have to set up global exception things in my project.
Ok.. I did it! I gave them a message in response body.
In sometimes this is not good way If you creating a web api project. You can add to response headers. (I think you must do it)
So, I tried to add same message in response headers and It happened.. Crash..
Because, my error message was containing non ascii characters. (Thanks stackflowover.com)
My message was “Login olamıyor mk.”
![Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers image - Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers](https://eniskurtayyilmaz.com/wp-content/uploads/2019/08/image.png)
![Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers image 1 - Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers](https://eniskurtayyilmaz.com/wp-content/uploads/2019/08/image-1.png)
![Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers image 4 - Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers](https://eniskurtayyilmaz.com/wp-content/uploads/2019/08/image-4.png)
When I using Postman app (Postman is a tool used to send requests), It seems like there is an issue. Because body and header is empty.
![Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers image 2 1024x631 - Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers](https://eniskurtayyilmaz.com/wp-content/uploads/2019/08/image-2-1024x631.png)
![Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers image 3 1024x599 - Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers](https://eniskurtayyilmaz.com/wp-content/uploads/2019/08/image-3-1024x599.png)
Finally, I found the solution. The response body was working, headers not working because of non ascii characters issue. I decided that the message of customize header must be base64 in response header.
It works!
![Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers image 5 - Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers](https://eniskurtayyilmaz.com/wp-content/uploads/2019/08/image-5.png)
![Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers image 6 1024x531 - Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers](https://eniskurtayyilmaz.com/wp-content/uploads/2019/08/image-6-1024x531.png)
![Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers image 7 1024x531 - Solved: .NET Core Doesn't Pass Non ASCII Characters In Response Headers](https://eniskurtayyilmaz.com/wp-content/uploads/2019/08/image-7-1024x531.png)
Ok guys, It’s working and I have to write some code!