Function sign_message

pub fn sign_message<'a>(
    message: &'a Message,
    last_signature: &'a str,
    params: &'a SigningParams<'a>,
) -> Result<SigningOutput<Message>, SigningError>

Signs an Event Stream message with the given credentials.

Each message’s signature incorporates the signature of the previous message (last_signature). The very first message incorporates the signature of the top-level request for both HTTP 2 and WebSocket.