408 Request Timeout
If a client is too slow to send a full HTTP request, a server can send back a
408 Request Timeout error response.
A request coming in too slow can happen for a variety of reasons, including slow internet connections, completely lost internet connections or bad actors.
When a server sends back the 408, it no longer wants to wait for the request
and kills the connection.
A robust client might try to repeat the request as soon as they receive this response.
Example
HTTP/1.1 408 Request Timeout
Connection: close
Content-Type: text/plain
Too slow! Try again
References
- RFC7231, Section 6.5.7 - 408 Request Timeout