add test code

.gitignore

+.idea

go.mod

+module code.wuban.net.cn/xueqianlu/txconfirm
+
+go 1.24.9
+
+require (
+	github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
+	github.com/ethereum/go-ethereum v1.10.24 // indirect
+	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
+	golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
+)

go.sum

+github.com/btcsuite/btcd/btcec/v2 v2.2.0 h1:fzn1qaOt32TuLjFlkzYSsBC35Q3KUjT1SwPxiMSCF5k=
+github.com/btcsuite/btcd/btcec/v2 v2.2.0/go.mod h1:U7MHm051Al6XmscBQ0BoNydpOTsFAn707034b5nY8zU=
+github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 h1:YLtO71vCjJRCBcrPMtQ9nqBsqpA1m5sE92cU+pd5Mcc=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1/go.mod h1:hyedUtir6IdtD/7lIxGeCxkaw7y45JueMRL4DIyJDKs=
+github.com/ethereum/go-ethereum v1.10.24 h1:16KV6vdc4T4VHn6UgGlTFs0S71YpbUpZd6BmGcxFXag=
+github.com/ethereum/go-ethereum v1.10.24/go.mod h1:EYFyF19u3ezGLD4RqOkLq+ZCXzYbLoNDdZlMt7kyKFg=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 h1:7I4JAnoQBe7ZtJcBaYHi5UtiO8tQHbUSXxL+pnGRANg=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a h1:dGzPydgVsqGcTRVwiLJ1jVbufYwmzD3LfVPLKsKg+0k=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

main.go

+package main
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"fmt"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethclient"
+	"log"
+	"math/big"
+	"time"
+)
+
+var privhex = ""
+var rpc = ""
+
+func main() {
+	client, err := ethclient.Dial(rpc)
+	if err != nil {
+		panic(err)
+	}
+	defer client.Close()
+	pk, err := crypto.HexToECDSA(privhex)
+	if err != nil {
+		panic(err)
+	}
+	ctx := context.TODO()
+	chainId, err := client.ChainID(ctx)
+	if err != nil {
+		panic(err)
+	}
+
+	nonce, err := client.NonceAt(ctx, crypto.PubkeyToAddress(pk.PublicKey), nil)
+	if err != nil {
+		panic(err)
+	}
+	for i := 0; i < 10; i++ {
+		SendAndWait(client, ctx, pk, chainId, nonce)
+		nonce += 1
+	}
+}
+
+func SendAndWait(client *ethclient.Client, ctx context.Context, pk *ecdsa.PrivateKey, chainId *big.Int, nonce uint64) {
+	to := common.HexToAddress("0xAD4143Df8Fe9E31B1C4318e8dE555872085f481d")
+
+	tx := &types.LegacyTx{
+		Nonce:    nonce,
+		GasPrice: big.NewInt(1000000000),
+		Gas:      21000,
+		To:       &to,
+		Value:    big.NewInt(1000),
+	}
+	signedTx, err := types.SignNewTx(pk, types.NewEIP155Signer(chainId), tx)
+	if err != nil {
+		log.Fatalf("failed to sign tx: %v", err)
+	}
+	err = client.SendTransaction(ctx, signedTx)
+	if err != nil {
+		log.Fatalln(fmt.Errorf("failed to send tx: %v", err))
+	}
+	t1 := time.Now()
+	tm := time.NewTicker(100 * time.Millisecond)
+	for {
+		select {
+		case <-tm.C:
+			receipt, _ := client.TransactionReceipt(ctx, signedTx.Hash())
+			if receipt != nil {
+				fmt.Println("tx mined in ", time.Since(t1).String())
+				return
+			}
+		}
+	}
+}