---
breadcrumb:
  - HTTP Website
  - Exceptions
keywords:
  - exception
  - error
---

# HTTP exceptions

`HttpException` class allow you to throw specific exception from context.
You can so define an HTTP status code and message.

By default, if an exception is throw, the framework generate an `InternalServerErrorHttpException` exception with the
main exception in previous.
If you throw an `HttpException`, the framework do not generate this exception and use yours, and the defined status code
and message.

## Main exception

`\Berlioz\Http\Core\Exception\HttpException` is the main exception used by the framework to generate errors to the user.

For the most common HTTP exceptions, some class are already define in the namespace `\Berlioz\Http\Core\Exception\Http`:

 Exception                          | Code | Reason                
------------------------------------|------|-----------------------
 `BadRequestHttpException`          | 400  | Bad Request           
 `ConflictHttpException`            | 409  | Conflict              
 `ForbiddenHttpException`           | 403  | Forbidden             
 `InternalServerErrorHttpException` | 500  | Internal Server Error 
 `NotFoundHttpException`            | 404  | Not Found             
 `NotImplementedHttpException`      | 501  | Not Implemented       
 `ServiceUnavailableHttpException`  | 503  | Service Unavailable   
 `UnauthorizedHttpException`        | 401  | Unauthorized