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transaction.go
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transaction.go
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package main
import (
"context"
"encoding/hex"
"fmt"
"log"
"math/big"
"os"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethclient"
)
func transaction() {
var (
ctx = context.Background()
url = "wss://eth-mainnet.g.alchemy.com/v2/" + os.Getenv("ALCHEMY_ID")
client, err = ethclient.DialContext(ctx, url)
)
if err != nil {
log.Fatal(err)
}
// 1
blockNumber := big.NewInt(15000023)
block, err := client.BlockByNumber(context.Background(), blockNumber)
if err != nil {
log.Fatal(err)
}
transactions := block.Transactions()
fmt.Println("total transactions count:", len(transactions))
for ind, tx := range transactions {
fmt.Println("----", ind, "----")
fmt.Println("transaction hash:", tx.Hash().Hex())
fmt.Println("transaction value:", tx.Value().String())
fmt.Println("transaction gas limit:", tx.Gas())
fmt.Println("transaction fee cap per gas:", tx.GasFeeCap())
fmt.Println("transaction tip cap per gas:", tx.GasTipCap())
fmt.Println("transaction gas price:", tx.GasPrice())
fmt.Println("transaction nonce:", tx.Nonce()) // 110644
fmt.Println("transaction data:", hex.EncodeToString(tx.Data())) // []
fmt.Println("transaction to:", tx.To().Hex()) // 0x55fE59D8Ad77035154dDd0AD0388D09Dd4047A8e
chainID, err := client.NetworkID(context.Background())
if err != nil {
log.Fatal(err)
}
baseFee := big.NewInt(1000000000)
if msg, err := tx.AsMessage(types.NewEIP155Signer(chainID), baseFee); err == nil {
fmt.Println("transaction from:", msg.From().Hex())
}
receipt, err := client.TransactionReceipt(context.Background(), tx.Hash())
if err != nil {
log.Fatal(err)
}
fmt.Println("transaction gas used:", receipt.GasUsed)
fmt.Println("transaction status:", receipt.Status)
}
// 2
blockHash := common.HexToHash("0x92a025d0798bc1bf1b284fa1440007a2c0991bb65e0bb6c72bf9d6a4c387b195") // 15945766
count, err := client.TransactionCount(context.Background(), blockHash)
if err != nil {
log.Fatal(err)
}
fmt.Println("----block 15945766----")
for idx := uint(0); idx < count; idx++ {
tx, err := client.TransactionInBlock(context.Background(), blockHash, idx)
if err != nil {
log.Fatal(err)
}
fmt.Println("transaction hash:", tx.Hash().Hex())
}
// 3
fmt.Println("----last ethw transaction----")
txHash := common.HexToHash("0xec9db5bfbcd30ad2e3070b626ed4f78abce88687c5d1eb23464242be5edcb537")
tx, isPending, err := client.TransactionByHash(context.Background(), txHash)
if err != nil {
log.Fatal(err)
}
fmt.Println("transaction hash:", tx.Hash().Hex())
fmt.Println("transaction gas limit:", tx.Gas())
fmt.Println("isPending:", isPending) // false
}