handlers.go
func (hmap *handlerMap) find(method []byte) Handler {
	hmap.RLock()
	handler := hmap.handlers[string(method)]
	hmap.RUnlock()

	return handler
}
func (hmap *handlerMap) find(method []byte) Handler {
	hmap.RLock()
	handler := hmap.handlers[string(method)]
	hmap.RUnlock()

	return handler
}
// Finds the handler matching the given service and method.  See https://github.com/golang/go/issues/3512
// for the reason that method is []byte instead of a string