errors

var (
	// ErrClientNotConnected indicates the client is not connected.
	ErrClientNotConnected = errors.New("client not connected")

	// ErrClientAlreadyConnected indicates the client is already connected.
	ErrClientAlreadyConnected = errors.New("client already connected")

	// ErrClientClosed indicates the client has been closed and cannot be reused.
	ErrClientClosed = errors.New(
		"client closed: clients are single-use, create a new one with New()",
	)

	// ErrTransportNotConnected indicates the transport is not connected.
	ErrTransportNotConnected = errors.New("transport not connected")

	// ErrRequestTimeout indicates a request timed out.
	ErrRequestTimeout = errors.New("request timeout")

	// ErrControllerStopped indicates the protocol controller has stopped.
	ErrControllerStopped = errors.New("protocol controller stopped")

	// ErrStdinClosed indicates stdin was closed due to context cancellation.
	ErrStdinClosed = errors.New("stdin closed")

	// ErrOperationCancelled indicates an operation was cancelled via cancel request.
	ErrOperationCancelled = errors.New("operation cancelled")

	// ErrUnknownMessageType indicates the message type is not recognized by the SDK.
	// Callers should skip these messages rather than treating them as fatal.
	ErrUnknownMessageType = errors.New("unknown message type")

	// ErrUnsupportedOption indicates an option is not supported by the selected backend.
	ErrUnsupportedOption = errors.New("unsupported option")

	// ErrUnsupportedControlRequest indicates a control request subtype is not supported.
	ErrUnsupportedControlRequest = errors.New("unsupported control request")
)