When sending a transaction using Solana web3, it sometimes shows this error:
Error: failed to send transaction: Transaction simulation failed: Blockhash not found
What is the proper way of dealing with this error other than retrying for x amount of times?
Is there a way to guarantee this issue won't happen when sending transactions?
Here is an example of how I'm sending a transaction:
const web3 = require("@solana/web3.js")
const bs58 = require('bs58')
const publicKey = new web3.PublicKey(new Uint8Array(bs58.decode("BASE_58_PUBLIC_KEY").toJSON().data))
const secretKey = new Uint8Array(bs58.decode("BASE_58_SECRET_KEY").toJSON().data)
const connection = new web3.Connection(
"", "finalized",
{
commitment: "finalized",
confirmTransactionInitialTimeout: 30000
}
)
const transaction = new web3.Transaction().add(
web3.SystemProgram.transfer({
fromPubkey: publicKey,
toPubkey: publicKey,
lamports: 1
})
)
web3.sendAndConfirmTransaction(
connection,
transaction,
[{publicKey: publicKey, secretKey: secretKey}],
{commitment: "finalized"}
)
How can I improve this to avoid the Blockhash not found error?
1 Answer
Retrying is not a bad thing! In some situations, it's actually the preferred way to handle dropped transactions.
You may like to read through this cookbook entry about retrying transactions:
Specifically, it explains how to implement some retry logic:
And what retrying means specifically:
