The HTTP headers sent in the upgrade request.
The identity portion of the connection URL, decoded.
If HTTP Basic auth was used in the connection, and the username correctly matches the identity, this field will contain the password (otherwise undefined). Typically this password would be a string, but the OCPP specs allow for this to be binary, so it is provided as a Buffer for you to interpret as you wish.
A set of subprotocols purportedly supported by the client.
The query string parsed as URLSearchParams.
The remote IP address of the socket.
The full HTTP request received by the underlying webserver.
The endpoint path portion of the connection URL. This is the part of the path before the identity.