Struct StartProof 

pub struct StartProof { /* private fields */ }

Proof that the scanner has been started.

This proof is returned by EventScanner::start() and must be passed to EventSubscription::stream() to access the event stream. This ensures at compile time that the scanner is started before attempting to read events.

Example

let mut scanner = EventScannerBuilder::sync().from_block(0).connect(provider).await?;

let filter = EventFilter::new().contract_address(contract_address);

// Create subscription (cannot access stream yet)
let subscription = scanner.subscribe(filter);

// Start scanner and get proof of it starting
let proof = scanner.start().await?;

// Now access the stream with the proof
let mut stream = subscription.stream(&proof);

while let Some(msg) = stream.next().await {
    // process events
}

Trait Implementations

impl Clone for StartProof

fn clone(&self) -> StartProof

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StartProof

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.