{"record":{"id":"314a6bef17347b07","repo":"XTLS/Xray-core","slug":"empty-selector-list","errorCode":null,"errorMessage":"empty selector list","messagePattern":"empty selector list","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"infra/conf/router.go","lineNumber":34,"sourceCode":"type StrategyConfig struct {\n\tType     string           `json:\"type\"`\n\tSettings *json.RawMessage `json:\"settings\"`\n}\n\ntype BalancingRule struct {\n\tTag         string         `json:\"tag\"`\n\tSelectors   StringList     `json:\"selector\"`\n\tStrategy    StrategyConfig `json:\"strategy\"`\n\tFallbackTag string         `json:\"fallbackTag\"`\n}\n\n// Build builds the balancing rule\nfunc (r *BalancingRule) Build() (*router.BalancingRule, error) {\n\tif r.Tag == \"\" {\n\t\treturn nil, errors.New(\"empty balancer tag\")\n\t}\n\tif len(r.Selectors) == 0 {\n\t\treturn nil, errors.New(\"empty selector list\")\n\t}\n\n\tr.Strategy.Type = strings.ToLower(r.Strategy.Type)\n\tswitch r.Strategy.Type {\n\tcase \"\":\n\t\tr.Strategy.Type = strategyRandom\n\tcase strategyRandom, strategyLeastLoad, strategyLeastPing, strategyRoundRobin:\n\tdefault:\n\t\treturn nil, errors.New(\"unknown balancing strategy: \" + r.Strategy.Type)\n\t}\n\n\tsettings := []byte(\"{}\")\n\tif r.Strategy.Settings != nil {\n\t\tsettings = ([]byte)(*r.Strategy.Settings)\n\t}\n\trawConfig, err := strategyConfigLoader.LoadWithID(settings, r.Strategy.Type)\n\tif err != nil {\n\t\treturn nil, errors.New(\"failed to parse to strategy config.\").Base(err)","sourceCodeStart":16,"sourceCodeEnd":52,"githubUrl":"https://github.com/XTLS/Xray-core/blob/7d214f8b094f75322fa3990f8aadad1c912f24f5/infra/conf/router.go#L16-L52","documentation":"Error \"empty selector list\" thrown in XTLS/Xray-core.","triggerScenarios":"Thrown at infra/conf/router.go:34 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"7d214f8b094f75322fa3990f8aadad1c912f24f5","analyzedAt":"2026-08-15T14:26:24.325Z","schemaVersion":2},"datasetVersion":"2026-08-16T03:17:38.424Z"}