{"record":{"id":"689ce49d89105076","repo":"router-for-me/CLIProxyAPI","slug":"allocate-plugin-response-buffer-w","errorCode":null,"errorMessage":"allocate plugin response buffer: %w","messagePattern":"allocate plugin response buffer: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/pluginhost/loader_windows.go","lineNumber":277,"sourceCode":"\t\tcase <-ctx.Done():\n\t\t\treturn nil, ctx.Err()\n\t\tdefault:\n\t\t}\n\t}\n\tmethodBytes, errMethod := syscall.BytePtrFromString(method)\n\tif errMethod != nil {\n\t\treturn nil, errMethod\n\t}\n\tvar requestPtr uintptr\n\tif len(request) > 0 {\n\t\trequestPtr = uintptr(unsafe.Pointer(&request[0]))\n\t}\n\tresponseMem, errAlloc := windows.LocalAlloc(\n\t\twindows.LMEM_FIXED|windows.LMEM_ZEROINIT,\n\t\tuint32(unsafe.Sizeof(windowsBuffer{})),\n\t)\n\tif errAlloc != nil {\n\t\treturn nil, fmt.Errorf(\"allocate plugin response buffer: %w\", errAlloc)\n\t}\n\tif responseMem == 0 {\n\t\treturn nil, fmt.Errorf(\"allocate plugin response buffer\")\n\t}\n\tdefer func() {\n\t\t_, _ = windows.LocalFree(windows.Handle(responseMem))\n\t}()\n\tresponse := (*windowsBuffer)(unsafe.Pointer(responseMem))\n\trc, _, _ := syscall.SyscallN(\n\t\tc.api.call,\n\t\tuintptr(unsafe.Pointer(methodBytes)),\n\t\trequestPtr,\n\t\tuintptr(len(request)),\n\t\tresponseMem,\n\t)\n\tvar out []byte\n\tif response.ptr != 0 && response.len > 0 {\n\t\tout = unsafe.Slice((*byte)(unsafe.Pointer(response.ptr)), response.len)","sourceCodeStart":259,"sourceCodeEnd":295,"githubUrl":"https://github.com/router-for-me/CLIProxyAPI/blob/78f0c4079e3e6273d65d03b5549cffc898703264/internal/pluginhost/loader_windows.go#L259-L295","documentation":"Before invoking the Windows plugin call pointer, the host allocates a windowsBuffer via LocalAlloc to receive the response. If LocalAlloc returns an error (wrapped here), the call cannot proceed. This is a local memory-allocation failure, not a plugin failure.","triggerScenarios":"Extreme process memory pressure causing LocalAlloc to fail; handle/memory quota exhaustion; extremely large numbers of concurrent plugin calls each allocating response buffers.","commonSituations":"Host process near its memory limit (many plugins + heavy traffic); running under a job object or container with a tight memory cap.","solutions":["Reduce memory pressure: lower concurrency, restart the process, or raise the container/job memory limit","Rate-limit concurrent plugin calls so response-buffer allocations stay bounded","Capture the wrapped error code to confirm it is allocation-related before deeper debugging"],"exampleFix":null,"handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":"out, err := client.Call(ctx, method, body)\nif err != nil && strings.Contains(err.Error(), \"allocate plugin response buffer\") {\n    // transient memory pressure: shed load and retry once\n    time.Sleep(50 * time.Millisecond)\n    out, err = client.Call(ctx, method, body)\n}","preventionTips":["Cap concurrent plugin calls with a semaphore","Monitor process memory and restart on sustained growth","Run with adequate container memory limits"],"tags":["plugin","windows","memory","allocation"],"backgroundTag":null,"analyzedSha":"78f0c4079e3e6273d65d03b5549cffc898703264","analyzedAt":"2026-08-15T12:26:37.444Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}