{"record":{"id":"38f96c86fac95f13","repo":"ruvnet/ruflo","slug":"a2a-agent-card-server-close-error-err-instanceo","errorCode":null,"errorMessage":"A2A agent card server close error: ${err instanceof Error ? err.message : err}","messagePattern":"A2A agent card server close error: (.+?)","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"v3/@claude-flow/plugin-agent-federation/src/plugin.ts","lineNumber":542,"sourceCode":"        context.logger.info(`A2A agent card served at ${this.agentCardServer.url}`);\n      } catch (err) {\n        context.logger.warn(\n          `A2A agent card endpoint unavailable (${err instanceof Error ? err.message : err}); ` +\n            'federation continues without the A2A discovery surface',\n        );\n        this.agentCardServer = null;\n      }\n    }\n\n    context.logger.info('Agent Federation plugin initialized');\n  }\n\n  async shutdown(): Promise<void> {\n    if (this.agentCardServer) {\n      try {\n        await this.agentCardServer.close();\n      } catch (err) {\n        this.context?.logger.warn(\n          `A2A agent card server close error: ${err instanceof Error ? err.message : err}`,\n        );\n      }\n      this.agentCardServer = null;\n    }\n    if (this.coordinator) {\n      await this.coordinator.shutdown();\n      this.coordinator = null;\n    }\n    if (this.transport) {\n      try {\n        await this.transport.close?.();\n      } catch (err) {\n        this.context?.logger.warn(\n          `Federation transport close error: ${err instanceof Error ? err.message : err}`,\n        );\n      }\n      this.transport = null;","sourceCodeStart":524,"sourceCodeEnd":560,"githubUrl":"https://github.com/ruvnet/ruflo/blob/fa13ee4ad60ac2090b1480656eb233521790d640/v3/@claude-flow/plugin-agent-federation/src/plugin.ts#L524-L560","documentation":"Log warning in shutdown: closing the A2A agent-card server threw; the error is contained so shutdown proceeds to release the coordinator and transport anyway.","triggerScenarios":"Thrown at v3/@claude-flow/plugin-agent-federation/src/plugin.ts:542 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Inspect the close error; it is usually benign during shutdown but repeated occurrences indicate a double-close or dangling connection bug to fix."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"fa13ee4ad60ac2090b1480656eb233521790d640","analyzedAt":"2026-08-18T21:34:22.708Z","contentChangedAt":"2026-08-18T21:34:22.708Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}