9.1_转账

function send(chain3, fromAddress, fromSecret, toAddress, amount){
  var mc = chain3.mc;
  //使用fromAddress的交易数作为唯一按顺序的nonce
  var txCount = chain3.mc.getTransactionCount(fromAddress);

  //设置gas的价格
  var gasPrice = 2500000000;
  //设置gas的最大的数量
  var gasLimit = 40000;
  //从最小单位sha转成moac单位
  var value = chain3.toSha(amount, 'mc');

  //开始组装转帐交易
  var rawTx = {
    to: toAddress,
    nonce: chain3.intToHex(txCount),
    gasPrice: chain3.intToHex(gasPrice),
    gasLimit: chain3.intToHex(gasLimit),
    value: chain3.intToHex(value)
  };
  var tx = new chain3.transaction(rawTx);
  //设置转账交易的网络ID
  tx.setChainId(chain3.version.network);
  //打印出转账交易的JSON结构
  console.log('tx', tx.toJSON());

  //生成私钥的Buffer版本
  var privateKey = new Buffer(fromSecret, 'hex');
  //使用私钥对转账交易进行签名
  tx.sign(privateKey);

  //序列化签名后的转帐交易，准备发送
  var signedTx = '0x' + tx.serialize().toString('hex');

  //验证签名的转帐交易
  tx.verifySignature();
  var verify = '0x' + tx.getSenderAddress().toString('hex');
  console.log("verify address:", verify);

  //发送签名后的转帐交易到MOAC网络结点
  mc.sendRawTransaction(signedTx, function(err, hash) {
      if (!err){
          //成功后，返回交易的Hash
          //备注：这个成功只说明些交易被MOAC网络结点接受放到pending列表中
          console.log("succeed: ", hash);
          return hash;
      }else{
          console.log("error:", err);
      }
  });
}