Create Nonce Account
For using durable nonce, you need to create an account, called nonce account.
It will stash a blockhash for us.
Full Code:
package main
​
import (
"context"
"fmt"
"log"
​
"github.com/portto/solana-go-sdk/client"
"github.com/portto/solana-go-sdk/common"
"github.com/portto/solana-go-sdk/program/sysprog"
"github.com/portto/solana-go-sdk/rpc"
"github.com/portto/solana-go-sdk/types"
)
​
var feePayer, _ = types.AccountFromBytes([]byte{178, 244, 76, 4, 247, 41, 113, 40, 111, 103, 12, 76, 195, 4, 100, 123, 88, 226, 37, 56, 209, 180, 92, 77, 39, 85, 78, 202, 121, 162, 88, 29, 125, 155, 223, 107, 139, 223, 229, 82, 89, 209, 27, 43, 108, 205, 144, 2, 74, 159, 215, 57, 198, 4, 193, 36, 161, 50, 160, 119, 89, 240, 102, 184})
​
func main() {
c := client.NewClient(rpc.LocalnetRPCEndpoint)
​
nonceAccountRentFreeBalance, err := c.GetMinimumBalanceForRentExemption(
context.Background(),
sysprog.NonceAccountSize,
)
if err != nil {
log.Fatalf("failed to get min balance for nonce account, err: %v", err)
}
​
nonceAccount := types.NewAccount()
fmt.Println("nonce account:", nonceAccount.PublicKey)
​
sig, err := c.QuickSendTransaction(
context.Background(),
client.QuickSendTransactionParam{
FeePayer: feePayer.PublicKey,
Instructions: []types.Instruction{
sysprog.CreateAccount(sysprog.CreateAccountParam{
From: feePayer.PublicKey,
New: nonceAccount.PublicKey,
Owner: common.SystemProgramID,
Lamports: nonceAccountRentFreeBalance,
Space: sysprog.NonceAccountSize,
}),
sysprog.InitializeNonceAccount(sysprog.InitializeNonceAccountParam{
// nonce account
Nonce: nonceAccount.PublicKey,
// nonce account's owner
Auth: feePayer.PublicKey,
}),
},
Signers: []types.Account{feePayer, nonceAccount},
},
)
if err != nil {
log.Fatalf("failed to send tx, err: %v", err)
}
​
fmt.Println("txhash", sig)
}
​
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