CRYPTOCURRENCY
Solana: Do I need websockets for sendAndConfirmTransaction() in web3.js version 2?
When to use WebSockets with SendAndConfirmTransaction in Web3.js version 2
In recent updates to the Web3.js library, version 2 includes new features that require the use of WebSockets for certain transactions. Specifically, “sendAndConfirmTransaction()” has changed from requiring a WebSocket connection to requiring RPC subscriptions.
Old method: No WebSockets needed (Web3.js version 1)
In previous versions of Web3.js, you could send and validate events without a WebSocket connection. The transaction would be sent to all connected nodes on the network, allowing them to validate and confirm their transaction. This approach was simple and effective.
New method: RPC subscriptions (Web3.js version 2)
In Web3.js version 2, the sendAndConfirmTransaction() factory now requires an RPC subscription as an argument. Specifically, you need to provide a list of subscriptions that will receive updates on the progress of the transaction.
Let’s look at this example:
`javascript
const red = new Web3(new Web3.providers.HttpProvider('
constant tx = {
from: '0x1234567890abcdef',
recipient: '0x9876543210fedcba',
value: 1,
gas price: 20, // Wei
gas limit: 20000,
night: 0,
};
const subscription = red.sendAndConfirmTransaction(tx).then((result) => {
console.log(result);
});
`
In this example,sendAndConfirmTransaction()sends a transaction to all nodes connected to the network and returns an object with the order ID. You must subscribe to this event using RPC subscriptions (e.g.eth_subscriptionsor to receive updates on the progress of the event.
Do I need WebSockets for SendAndConfirmTransaction in Web3.js version 2?
Lastly, yes, it is necessary to use WebSockets with sendAndConfirmTransaction() in Web3.js version 2. The library now requires an RPC subscription as an argument, which can only be obtained using a WebSocket connection.
If you are building a decentralized application (dApp) that uses the Web3.js API for real-time updates, you may need to use WebSockets with the sendAndConfirmTransaction() command to ensure a smooth transfer of data between nodes on your network. However, if you are building a simple dApp or simply want to avoid using WebSockets, you can still achieve the functionality you want without them.
Conclusion
In summary, while Web3.js version 2 simplifies some functionality, it also requires the use of WebSockets for certain events, such as “sendAndConfirmTransaction()”. By understanding these changes and their implications, you can ensure a smooth integration into your dApp or build on top of existing infrastructure.
