XTLS/Xray-core · error

failed to process loopback connection

Error message

failed to process loopback connection

What it means

Error "failed to process loopback connection" thrown in XTLS/Xray-core.

Source

Thrown at proxy/loopback/loopback.go:48

	errors.LogInfo(ctx, "opening connection to ", destination)
	content := new(session.Content)
	content.SkipDNSResolve = true
	content.SniffingRequest = l.sniffingRequest

	ctx = session.ContextWithContent(ctx, content)
	inbound := &session.Inbound{}
	originInbound := session.InboundFromContext(ctx)
	if originInbound != nil {
		// get a shallow copy to avoid modifying the inbound tag in upstream context
		*inbound = *originInbound
	}
	inbound.Tag = l.inboundTag
	ctx = session.ContextWithInbound(ctx, inbound)

	err := l.dispatcherInstance.DispatchLink(ctx, destination, link)
	if err != nil {
		return errors.New(ctx, "failed to process loopback connection").Base(err)
	}
	return nil
}

func (l *Loopback) init(config *Config, dispatcherInstance routing.Dispatcher) error {
	l.dispatcherInstance = dispatcherInstance
	l.inboundTag = config.InboundTag
	if config.Sniffing.GetEnabled() {
		request, err := proxyman.BuildSniffingRequest(config.Sniffing)
		if err != nil {
			return errors.New("failed to build loopback sniffing request").Base(err).AtError()
		}
		l.sniffingRequest = request
	}
	return nil
}

func init() {

View on GitHub (pinned to 7d214f8b09)

When it happens

Trigger: Thrown at proxy/loopback/loopback.go:48 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/9b69aaae02e10246. Report an issue: GitHub.