Bug: CI returns 200 OK even though the route does not exist

[xonipatino]

PHP Version

8.2

CodeIgniter4 Version

4.4.1

CodeIgniter4 Installation Method

Composer (using codeigniter4/appstarter)

Which operating systems have you tested for this bug?

Windows

Which server did you use?

apache

Database

No response

What happened?

Codeigniter 4.4.1 responds with code 200 OK when a Fetch request is made even if the route does not exist.

Steps to Reproduce

1. These are my defined routes.

2. In the browser, modify the 'action' attribute in the form for the 'usuarios/nuevo' route, placing it as 'usuarios/nuevoss', POST method.

3. The request is sent and the response was 200 OK.

4. And upon reviewing the response content it was the following.

{
    "title": "CodeIgniter\\Exceptions\\PageNotFoundException",
    "type": "CodeIgniter\\Exceptions\\PageNotFoundException",
    "code": 404,
    "message": "Can't find a route for 'post: usuarios/nuevoss'.",
    "file": "C:\\Users\\xonip\\www\\local_html\\macc\\vendor\\codeigniter4\\framework\\system\\CodeIgniter.php",
    "line": 966,
    "trace": [
        {
            "file": "C:\\Users\\xonip\\www\\local_html\\macc\\vendor\\codeigniter4\\framework\\system\\CodeIgniter.php",
            "line": 966,
            "function": "forPageNotFound",
            "class": "CodeIgniter\\Exceptions\\PageNotFoundException",
            "type": "::"
        },
        {
            "file": "C:\\Users\\xonip\\www\\local_html\\macc\\vendor\\codeigniter4\\framework\\system\\CodeIgniter.php",
            "line": 362,
            "function": "display404errors",
            "class": "CodeIgniter\\CodeIgniter",
            "type": "->"
        },
        {
            "file": "C:\\Users\\xonip\\www\\local_html\\macc\\public\\index.php",
            "line": 79,
            "function": "run",
            "class": "CodeIgniter\\CodeIgniter",
            "type": "->"
        },
        {
            "file": "C:\\Users\\xonip\\www\\local_html\\macc\\vendor\\codeigniter4\\framework\\system\\Commands\\Server\\rewrite.php",
            "line": 47,
            "args": [
                "C:\\Users\\xonip\\www\\local_html\\macc\\public\\index.php"
            ],
            "function": "require_once"
        }
    ]
}

Expected Output

The response code that CI should send is 404.

since the route 'usuarios/nuevoss' does not exist in the route declarations.

Anything else?

No response

[kenjis]

Please try this patch:

--- a/system/CodeIgniter.php
+++ b/system/CodeIgniter.php
@@ -979,8 +979,7 @@ class CodeIgniter
         // Display 404 Errors
         $this->response->setStatusCode($e->getCode());
 
-        echo $this->outputBufferingEnd();
-        flush();
+        $this->outputBufferingEnd();
 
         // Throws new PageNotFoundException and remove exception message on production.
         throw PageNotFoundException::forPageNotFound(

[xonipatino]

Hello @kenjis, bug solved, thank you very much!

[ddevsr]

This issue will be close after PR merged