411 Length Required (HTTP Status Code 411)

Updated: at 09:12 AM

HTTP status code 411 indicates that the server refuses to accept the request without a defined Content-Length. The Content-Length header is necessary for the server to know the size of the request body, which is essential for processing the request correctly.

Common Scenarios for 411 Status Code

Characteristics of 411 Length Required

Example Response

HTTP/1.1 411 Length Required
Content-Type: text/html
Content-Length: 160

<html>
<head><title>411 Length Required</title></head>
<body>
<h1>411 Length Required</h1>
<p>The server refuses to accept the request without a defined <code>Content-Length</code>.</p>
</body>
</html>

In this example, the server indicates that it will not process the request due to the missing Content-Length header. The client should resend the request with the appropriate Content-Length header.

Note: When encountering a 411 Length Required status, clients should review their requests to ensure that they include the Content-Length header when sending a request body. This is particularly important for multipart/form-data or other requests with bodies. Additionally, if the request body is dynamically generated, it is crucial to ensure that the Content-Length is correctly calculated and included for successful communication with the server.