Length Required

Client Error

The request did not specify the length of its content

Server requires Content-Length header

How this status code appears in HTTP responses

HTTP Response Header

HTTP/1.1 411 Length Required

cURL Example

curl -I https://example.com
# Returns: HTTP/1.1 411 Length Required

This is a client error response indicating the request contains bad syntax or cannot be fulfilled.

Other codes in the same category

The server cannot process the request due to client error

Authentication is required and has failed or has not been provided

Reserved for future use in digital payment systems