server.go
func (s *Server) SendRequestArr(connID string, method string, resHandler func(ctx *ResCtx) error, params ...interface{}) (reqID string, err error) {
	return s.SendRequest(connID, method, params, resHandler)
}
func (s *Server) SendRequestArr(connID string, method string, resHandler func(ctx *ResCtx) error, params ...interface{}) (reqID string, err error) {
	return s.SendRequest(connID, method, params, resHandler)
}
// SendRequestArr sends a JSON-RPC request through the connection denoted by the connection ID, with array params and auto generated request ID.
// resHandler is called when a response is returned.