101 Switching Protocols
Fine, we'll do it your way.
What it properly means
Sent in response to an Upgrade request header, naming the protocol the server is switching to.
- Class
- 1xx Informational: hold on
- Defined in
- RFC 9110, section 15.2.2
Get one yourself
This endpoint really answers with 101. Point your client at it and see what it does.
curl -i https://httpcodes.dev/api/101