421 Misdirected Request
The HTTP 421 Misdirected Request client error response status code indicates that the request was directed to a server that is not able to produce a response.
This can be sent by a server that is not configured to produce responses for the combination of scheme and authority that are included in the request URI.
Clients may retry the request over a different connection.
Status
http
421 Misdirected Request
Examples
Apache SNI error
Given the following request:
http
GET / HTTP/1.1
Host: abc.example.com
In cases such as a wildcard certificate (*.example.com) and a connection is reused for multiple domains (abc.example.com, def.example.com), the server may respond with a 421:
http
HTTP/1.1 421 Misdirected Request
Date: Wed, 26 Jun 2024 12:00:00 GMT
Server: Apache/2.4.1 (Unix)
Specifications
| Specification |
|---|
| HTTP Semantics # name-421-misdirected-request |
See also
- HTTP response status codes
- Multiple hosts and misdirected requests Apache Server documentation
- TLS 1.3
- Server Name Indication (SNI)
- Transport Layer Security (TLS) configuration
- Apache error code
AH02032implementation