Function check_trace_timeouts 

pub fn check_trace_timeouts(
    measurement: Arc<RwLock<Option<MeasurementState>>>,
    cli_sender: Arc<Mutex<Option<Sender<Result<ReplyBatch, Status>>>>>,
)

Check ongoing Trace tasks that have timed out (i.e., a hop didn’t respond within the timeout)

• Linear sessions follow up with TTL + 1, terminating after max_failures consecutive unresponsive hops
• Binary sessions (tracemap) first extend the confirmation window past the silent midpoint (to rule out an interior unresponsive hop); once the window is exhausted the silent tail is assumed to start at the midpoint and the search continues in the lower half

Arguments

• measurement - Shared measurement state containing worker_stacks and trace_config
• cli_sender - Sender handle for forwarding ‘*’ hops to the CLI