419 Page Expired

The 419 HTTP response status code is a specific error used by Laravel, a web development framework.

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Introduction
In Action
Sample
Conclusion

Introduction

HTTP response status code 419 Page Expired is a specific error used by Laravel, a web development framework. It is returned by the server when the Cross-Site Request Forgery (CSRF) validation fails.

This means that the server cannot verify the authenticity of the client’s request, potentially indicating a security issue.

In Action

The 419 Page Expired error in the Laravel PHP Framework occurs when the server detects a failure in Cross-Site Request Forgery (CSRF) validation. CSRF protection is automatically enabled for certain HTTP methods like POST, PUT, PATCH, and DELETE requests to enhance security. It’s important to handle this error properly to ensure the protection of your web application.

Note: Search engines like Google will not index a URL with the 419 Page Expired response status, so URLs returning this code will be removed from search results.

Sample

In the example, when the client tries to send a file, the server responds with the 419 Page Expired error, which means that the Cross-Site Request Forgery (CSRF) validation has not passed.

This security feature helps protect the website from unauthorized actions, and in this case, the server prevents the file upload due to the validation failure.

Request

PUT / HTTP/1.1
Host: www.example.com
Content-Type: applications/pdf
Content-Length: 10000

< PDF file is transferred>

Response

HTTP/1.1 419 Page Expired
Content-Type: text/html
Content-Length: 150

< html>
< head>
< title>Page Expired< /title>
< /head>
< body>
< p>Your session has expired. Please refresh and try again.< /p>
< /body>
< /html>

Conclusion

The 419 Page Expired HTTP status code indicates that the CSRF validation has failed, preventing the client from performing certain actions on the website. It serves as a security measure to protect against unauthorized requests and ensures a safer online experience for users.