XTLS/Xray-core · error

failed to build Mux config

Error message

failed to build Mux config

What it means

Error "failed to build Mux config" thrown in XTLS/Xray-core.

Source

Thrown at infra/conf/xray.go:348

		if ps.TransportLayerProxy {
			if senderSettings.StreamSettings != nil {
				if senderSettings.StreamSettings.SocketSettings != nil {
					senderSettings.StreamSettings.SocketSettings.DialerProxy = ps.Tag
				} else {
					senderSettings.StreamSettings.SocketSettings = &internet.SocketConfig{DialerProxy: ps.Tag}
				}
			} else {
				senderSettings.StreamSettings = &internet.StreamConfig{SocketSettings: &internet.SocketConfig{DialerProxy: ps.Tag}}
			}
			ps = nil
		}
		senderSettings.ProxySettings = ps
	}

	if c.MuxSettings != nil {
		ms, err := c.MuxSettings.Build()
		if err != nil {
			return nil, errors.New("failed to build Mux config").Base(err)
		}
		senderSettings.MultiplexSettings = ms
	}

	settings := []byte("{}")
	if c.Settings != nil {
		settings = ([]byte)(*c.Settings)
	}
	rawConfig, err := outboundConfigLoader.LoadWithID(settings, c.Protocol)
	if err != nil {
		return nil, errors.New("failed to load outbound detour config for protocol ", c.Protocol).Base(err)
	}
	if err := validateOutboundTransportSecurity(rawConfig, senderSettings); err != nil {
		return nil, err
	}
	ts, err := rawConfig.(Buildable).Build()
	if err != nil {
		return nil, errors.New("failed to build outbound handler for protocol ", c.Protocol).Base(err)

View on GitHub (pinned to 7d214f8b09)

When it happens

Trigger: Thrown at infra/conf/xray.go:348 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of XTLS/Xray-core@7d214f8b09 (2026-08-15). Data as JSON: /api/errors/dc4e840aebbd906a. Report an issue: GitHub.