client

var (
	// ErrInvalidConfig indicates missing address, authentication, timing, or queue configuration.
	ErrInvalidConfig = errors.New("invalid client configuration")
	// ErrUnexpectedServerResponse indicates a valid but contextually impossible handshake response.
	ErrUnexpectedServerResponse = errors.New("unexpected server response")
	// ErrSessionGone indicates that the server no longer retains a session being joined.
	ErrSessionGone = errors.New("relay session is gone")
	// ErrStartupTimeout indicates that no configured lane created a session within the startup budget.
	ErrStartupTimeout = errors.New("relay session startup timed out")
	// ErrLaneRejected indicates a permanent carrier-specific admission rejection.
	ErrLaneRejected = errors.New("relay lane rejected")
)