probelabs/goreplay · error

binary output is only available in PRO version

Error message

binary output is only available in PRO version

What it means

Sentinel error from the open-source BinaryOutput.PluginWrite: binary output is a paywalled PRO feature, so every write attempt in the OSS build returns this error instead of sending data to the replay address.

Solutions

1. Use the PRO version of gor if binary output is required
2. Switch to --output-file or --output-tcp which are available in the OSS build
3. Remove --output-binary flags from the command line

When it happens

Trigger: Thrown at output_binary.go:38 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of probelabs/goreplay@251e45abd2 (2026-09-02). Data as JSON: /api/errors/ed5587bbbcadac80. Report an issue: GitHub.

Appendix: source

Thrown at output_binary.go:38

	TrackResponses bool          `json:"output-binary-track-response"`
}

// BinaryOutput plugin manage pool of workers which send request to replayed server
// By default workers pool is dynamic and starts with 10 workers
// You can specify fixed number of workers using `--output-tcp-workers`
type BinaryOutput struct {
	address string
}

// NewBinaryOutput constructor for BinaryOutput
// Initialize workers
func NewBinaryOutput(address string, config *BinaryOutputConfig) PluginReadWriter {
	return &BinaryOutput{address: address}
}

// PluginWrite writes a message to this plugin
func (o *BinaryOutput) PluginWrite(msg *Message) (n int, err error) {
	return 0, errors.New("binary output is only available in PRO version")
}

// PluginRead reads a message from this plugin
func (o *BinaryOutput) PluginRead() (*Message, error) {
	return nil, errors.New("binary output is only available in PRO version")
}

func (o *BinaryOutput) String() string {
	return "Binary output: " + o.address + " (PRO version required)"
}

// Close closes this plugin for reading
func (o *BinaryOutput) Close() error {
	return nil
}

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