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.

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
}

View on GitHub (pinned to 251e45abd2)

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.