Module fallback 

Fallback policy for optional broker-to-backend connection handoff.

This module does not transfer handles. It keeps the decision surface for Phase 6 small: decide whether a handoff attempt is allowed, record failed attempts, and always translate handoff failures into a silent reconnect fallback for the client.

Structs

HandoffAttemptInputs

Inputs that decide whether a specific client request may attempt handoff.

HandoffFallbackDecision

Client-visible behavior when broker handoff is skipped or fails.

HandoffFallbackPolicy

Runtime bounds for optional handoff fallback behavior.

HandoffFallbackState

Per-backend state for suppressing repeatedly failing handoff attempts.

Enums

HandoffAttemptDecision

Decision produced before or after an optional handoff attempt.

HandoffAttemptFailure

Failure observed after a platform-specific handoff attempt was started.

HandoffFallbackReason

Broker-side reason for falling back from handoff to client reconnect.

Constants

DEFAULT_HANDOFF_FAILED_ATTEMPTS_PER_WINDOW

Default number of failed handoff attempts allowed per backend/window.

DEFAULT_HANDOFF_FAILED_ATTEMPT_WINDOW

Default window used to rate-limit failed handoff attempts.