XTLS/Xray-core · error

failed to parse to strategy config.

Error message

failed to parse to strategy config.

What it means

Error "failed to parse to strategy config." thrown in XTLS/Xray-core.

Source

Thrown at infra/conf/router.go:52

		return nil, errors.New("empty selector list")
	}

	r.Strategy.Type = strings.ToLower(r.Strategy.Type)
	switch r.Strategy.Type {
	case "":
		r.Strategy.Type = strategyRandom
	case strategyRandom, strategyLeastLoad, strategyLeastPing, strategyRoundRobin:
	default:
		return nil, errors.New("unknown balancing strategy: " + r.Strategy.Type)
	}

	settings := []byte("{}")
	if r.Strategy.Settings != nil {
		settings = ([]byte)(*r.Strategy.Settings)
	}
	rawConfig, err := strategyConfigLoader.LoadWithID(settings, r.Strategy.Type)
	if err != nil {
		return nil, errors.New("failed to parse to strategy config.").Base(err)
	}
	var ts proto.Message
	if builder, ok := rawConfig.(Buildable); ok {
		ts, err = builder.Build()
		if err != nil {
			return nil, err
		}
	}

	return &router.BalancingRule{
		Strategy:         r.Strategy.Type,
		StrategySettings: serial.ToTypedMessage(ts),
		FallbackTag:      r.FallbackTag,
		OutboundSelector: r.Selectors,
		Tag:              r.Tag,
	}, nil
}

View on GitHub (pinned to 7d214f8b09)

When it happens

Trigger: Thrown at infra/conf/router.go:52 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

AI-assisted analysis of XTLS/Xray-core@7d214f8b09 (2026-08-15). Data as JSON: /api/errors/9b386414b845e56f. Report an issue: GitHub.