slotsUpdatesSubscribe RPC Method

As of May 1, 2026, this WebSocket method is billed based on metered data usage: 0.1 MB = 15 API credits. Learn more about WebSocket billing.

The Solana Kit example uses createSolanaRpcSubscriptions_UNSTABLE because the Kit API for slot update subscriptions is currently experimental and the implementation may change. The slotsUpdatesSubscribe method itself is fully supported by the Quicknode WebSocket API.

Paramètres

Cette méthode n'accepte aucun paramètre

Renvoie

slotsUpdatesNotification

objet

Chargement...

slot

entier

Chargement...

horodatage

entier

Chargement...

type

chaîne de caractères

Chargement...

statistiques

objet

Chargement...

numTransactionEntries

entier

Chargement...

numSuccessfulTransactions

entier

Chargement...

numFailedTransactions

entier

Chargement...

maxTransactionsPerEntry

entier

Chargement...

Requête

1
import { createSolanaRpcSubscriptions_UNSTABLE } from '@solana/kit';
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const rpcSubscriptions = createSolanaRpcSubscriptions_UNSTABLE('');
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async function main() {
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    const abortController = new AbortController();
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    const slotsUpdatesNotification = await rpcSubscriptions
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        .slotsUpdatesNotifications()
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        .subscribe({ abortSignal: abortController.signal });
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    essayer {
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        for await (const notification of slotsUpdatesNotification) {
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            console.log('type:', notification.type);
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            console.log('slot:', notification.slot);
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            console.log('timestamp:', notification.timestamp);
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        }
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    } catch (e) {
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        console.error(e);
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    } finally {
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        abortController.abort();
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        console.log('Unsubscribed from slot updates');
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    }
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}
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main();
27

1
import { createSolanaRpcSubscriptions_UNSTABLE } from '@solana/kit';
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const rpcSubscriptions = createSolanaRpcSubscriptions_UNSTABLE('');
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async function main() {
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    const abortController = new AbortController();
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    const slotsUpdatesNotification = await rpcSubscriptions
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        .slotsUpdatesNotifications()
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        .subscribe({ abortSignal: abortController.signal });
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    essayer {
13
        for await (const notification of slotsUpdatesNotification) {
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            console.log('type:', notification.type);
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            console.log('slot:', notification.slot);
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            console.log('timestamp:', notification.timestamp);
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        }
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    } catch (e) {
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        console.error(e);
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    } finally {
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        abortController.abort();
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        console.log('Unsubscribed from slot updates');
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    }
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}
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main();
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1
wscat -c  \
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# wait for connection 
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{"id":1,"jsonrpc":"2.0","method":"slotsUpdatesSubscribe"}

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wscat -c  \
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# wait for connection 
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{"id":1,"jsonrpc":"2.0","method":"slotsUpdatesSubscribe"}

Réponse

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{
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  "jsonrpc": "2.0",
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  "result": 0,
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  "id": 1
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}

1
{
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  "jsonrpc": "2.0",
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  "result": 0,
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  "id": 1
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}

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