HTTP 308 Permanent Redirect vs 411 Length Required
HTTP 308 (Permanent Redirect) is a 3xx Redirection response, while 411 (Length Required) is a 4xx Client Error response. 308 indicates that the resource has been permanently moved. Like 301, but guarantees the HTTP method will NOT be changed. In contrast, 411 means that the server refuses to accept the request without a Content-Length header.
Description
The resource has been permanently moved. Like 301, but guarantees the HTTP method will NOT be changed.
When You See It
For permanent URL changes where POST requests must remain POST.
How to Fix
Update all references to the new URL. The HTTP method is preserved.
Description
The server refuses to accept the request without a Content-Length header.
When You See It
When sending a request body without specifying Content-Length.
How to Fix
Include a Content-Length header in your request.
Key Differences
308 is a 3xx Redirection response, while 411 is a 4xx Client Error response.
HTTP 308: The resource has been permanently moved. Like 301, but guarantees the HTTP method will NOT be changed.
HTTP 411: The server refuses to accept the request without a Content-Length header.
You encounter 308 when for permanent URL changes where POST requests must remain POST.
You encounter 411 when when sending a request body without specifying Content-Length.
When to Use Which
For 308 (Permanent Redirect): Update all references to the new URL. The HTTP method is preserved. For 411 (Length Required): Include a Content-Length header in your request.