Register a relay client and return a short-lived relay token.
The relay token is used to authenticate the client’s WebSocket connection to the session relay channel.
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Successful Response
Response containing relay connection credentials after registration.
Identifier of the user session scoped to this relay token.
Short-lived relay token for websocket authentication.
Seconds until the relay token expires.
WebSocket path for the relay endpoint.
Heartbeat interval clients should respect.