golang节点转账

package main
 
import(
  "fmt"
  "github.com/go-errors/errors"
  "github.com/btcsuite/btcd/rpcclient"
)
func connect() (*rpcclient.Client, error) {
  //设置 RPC 用户名和密码
  rpcuser := "rpcuser"
  rpcpass := "rpcpassword"
  //设置比特币网络 IP 地址和端口
  rc, err:=rpcclient.New(&rpcclient.ConnConfig{
     Host: "localhost:8332",
     User: rpcuser,
     Pass: rpcpass,
     HTTPPostMode: true,
     DisableTLS: true,
  }, nil)
  if err != nil{
    return nil, errors.Wrap(err, 1)
  }
   return rc, nil
}

func createTransaction(rc *rpcclient.Client, sends []string, recvs []string, amt float64) ([]byte, error) {
  var inputs []rpcclient.TransactionInput
  var amount float64
    //遍历每个发送地址，以便查找每个地址上的余额
  for _, send := range sends{
    bal, err := rc.GetReceivedByAddress(send, 0)
    if err != nil{
      return nil, errors.Wrap(err, 1)
    }
    amt, _ := strconv.ParseFloat(fmt.Sprintf("%.8f", bal), 64)
    amount += amt
    //添加输入地址和相关金额到交易中
    input := rpcclient.TransactionInput{
      //获取该地址上未花费的交易
      Txid:"Hash of the transaction this output came from",
      //设置交易中的输出索引
      Vout:index_in_the_list_of_vouts,
    }
    inputs = append(inputs, input)
  }
  var outputs []rpcclient.TransactionOutput
  //遍历所需要发起转账的地址和相关转账金额
  for _, recv := range recvs{
    out := rpcclient.TransactionOutput{
      //设置接收地址
      Address:recv.Address,
      //设置接收地址对应的金额
      Amount:btcutil.Amount(recv.Amount).ToBTC(),
    }
    outputs = append(outputs, out)
  }
   //发送地址与接收地址之间的手续费
  fees := float64(0.001)
  //计算总输入金额和总输出金额
  inAmt := fmt.Sprintf("%.8f", amount)
  outAmt := fmt.Sprintf("%.8f", amt+fees)
  //创建比特币交易
  txHash, err := rc.CreateRawTransaction(inputs, outputs)
  if err != nil{
    return nil, errors.Wrap(err, 1)
  }
  return txHash, nil
}

func signTransaction(rc *rpcclient.Client, txHash []byte, sends []string) (*rpcclient.BuildRawTransactionResult, error) {
  var signals []rpcclient.RawTxInput
  //遍历每个发送地址，并建立输入交易，生成用于签名的私钥
  for _, send := range sends{
  //建立用于签名的私钥，并生成输入交易
  privKey, _ := btcutil.DecodeWIF(sendPrivatekey.WIF)
  sig, err := rc.SignRawTransactionWithKey(txHash,[]btcutil.PrivateKey{privKey})
    if err != nil{
      return nil, errors.Wrap(err, 1)
    }
    input := rpcclient.RawTxInput{
      //获取该地址未花费的交易
      Txid:"Hash of the transaction this output came from",
      //设置该交易输出的索引
      Vout:index_in_the_list_of_vouts,
      //获取该地址的解锁脚本
      ScriptPubKey:[]byte{},
      //设置签名脚本
      ScriptSig:[]byte{},
    }
    signals = append(signals, input)
  }
  //签名交易
  signedTx, err := rc.SignRawTransaction(txHash, signals)
  if err != nil {
    return nil, errors.Wrap(err, 1)
  }
  return signedTx, nil
}

func sendTransaction(rc *rpcclient.Client, signedTx *rpcclient.BuildRawTransactionResult) (string, error) {
  //发送比特币交易
  txHash, err := rc.SendRawTransaction(signedTx.Hex)
  if err != nil{
    return "", errors.Wrap(err, 1)
  }
  return txHash, nil
}