{"record":{"id":"a12d452e352bb1e0","repo":"XTLS/Xray-core","slug":"loopback-connection-detected","errorCode":null,"errorMessage":"loopback connection detected","messagePattern":"loopback connection detected","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"app/proxyman/inbound/worker.go","lineNumber":96,"sourceCode":"\t\t\tdest = net.DestinationFromAddr(conn.LocalAddr())\n\t\t}\n\n\t\tif dest.IsValid() {\n\t\t\t// Check if try to connect to this inbound itself (can cause loopback)\n\t\t\tvar isLoopBack bool\n\t\t\tif w.address == net.AnyIP || w.address == net.AnyIPv6 {\n\t\t\t\tif dest.Port.Value() == w.port.Value() && IsLocal(dest.Address.IP()) {\n\t\t\t\t\tisLoopBack = true\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tif w.hub.Addr().String() == dest.NetAddr() {\n\t\t\t\t\tisLoopBack = true\n\t\t\t\t}\n\t\t\t}\n\t\t\tif isLoopBack {\n\t\t\t\tcancel()\n\t\t\t\tconn.Close()\n\t\t\t\terrors.LogError(ctx, errors.New(\"loopback connection detected\"))\n\t\t\t\treturn\n\t\t\t}\n\t\t\toutbounds[0].Target = dest\n\t\t}\n\t}\n\tctx = session.ContextWithOutbounds(ctx, outbounds)\n\n\tif w.uplinkCounter != nil || w.downlinkCounter != nil {\n\t\tconn = &stat.CounterConnection{\n\t\t\tConnection:   conn,\n\t\t\tReadCounter:  w.uplinkCounter,\n\t\t\tWriteCounter: w.downlinkCounter,\n\t\t}\n\t}\n\tctx = session.ContextWithInbound(ctx, &session.Inbound{\n\t\tSource:  net.DestinationFromAddr(conn.RemoteAddr()),\n\t\tLocal:   net.DestinationFromAddr(conn.LocalAddr()),\n\t\tGateway: net.TCPDestination(w.address, w.port),","sourceCodeStart":78,"sourceCodeEnd":114,"githubUrl":"https://github.com/XTLS/Xray-core/blob/7d214f8b094f75322fa3990f8aadad1c912f24f5/app/proxyman/inbound/worker.go#L78-L114","documentation":"Error \"loopback connection detected\" thrown in XTLS/Xray-core.","triggerScenarios":"Thrown at app/proxyman/inbound/worker.go:96 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":"2026-08-15T22:17:37.221Z"}