slotSubscribe RPC Method

Parameters

This method does not accept any parameters

Returns

result

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Notification Format:

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parent

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root

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slot

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Request

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import { createSolanaRpcSubscriptions } from '@solana/kit';
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const rpcSubscriptions = createSolanaRpcSubscriptions('');
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async function main() {
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    const abortController = new AbortController();
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    const subscription = await rpcSubscriptions
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        .slotNotifications()
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        .subscribe({ abortSignal: abortController.signal });
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    try {
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        for await (const notification of subscription) {
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            console.log("Updated slot info: ", notification);
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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 changes');
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    }
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}
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main();

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import { createSolanaRpcSubscriptions } from '@solana/kit';
2

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const rpcSubscriptions = createSolanaRpcSubscriptions('');
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async function main() {
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    const abortController = new AbortController();
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    const subscription = await rpcSubscriptions
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        .slotNotifications()
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        .subscribe({ abortSignal: abortController.signal });
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    try {
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        for await (const notification of subscription) {
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            console.log("Updated slot info: ", notification);
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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 changes');
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    }
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}
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main();

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const web3 = require("@solana/web3.js");
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(async () => {
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  const solanaConnection = new web3.Connection("https://docs-demo.solana-mainnet.quiknode.pro/", {
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    wsEndpoint: "",
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  });
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  solanaConnection.onSlotChange((slotInfo) =>
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    console.log("Updated slot info: ", slotInfo)
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  );
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})();
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const web3 = require("@solana/web3.js");
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(async () => {
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  const solanaConnection = new web3.Connection("https://docs-demo.solana-mainnet.quiknode.pro/", {
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    wsEndpoint: "",
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  });
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  solanaConnection.onSlotChange((slotInfo) =>
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    console.log("Updated slot info: ", slotInfo)
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  );
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})();
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import solana
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import asyncio
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from asyncstdlib import enumerate
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from solana.rpc.websocket_api import connect
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async def main():
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    async with connect("") as websocket:
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        await websocket.slot_subscribe()
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        first_resp = await websocket.recv()
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        subscription_id = first_resp.result
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        async for idx, msg in enumerate(websocket):
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            print(msg)
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asyncio.run(main())

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import solana
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import asyncio
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from asyncstdlib import enumerate
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from solana.rpc.websocket_api import connect
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async def main():
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    async with connect("") as websocket:
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        await websocket.slot_subscribe()
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        first_resp = await websocket.recv()
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        subscription_id = first_resp.result
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        async for idx, msg in enumerate(websocket):
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            print(msg)
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asyncio.run(main())

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

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

Response

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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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}

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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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}

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