忧郁的大能猫

好奇的探索者，理性的思考者，踏实的行动者。

Table of Contents:

cpp-ethereum

相关信息

数据目录：
windows下目录
C:\Users\sunxv\AppData\Roaming\Web3

• cpp-ethereum架构：
  https://ethdocs.org/en/latest/ethereum-clients/cpp-ethereum/architecture.html

• jsonrpc 接口文档
  https://ethereumbuilders.gitbooks.io/guide/content/en/index.html

搭建私有链

1.配置文件设置

见文末config.json

2.启动程序

./aleth --config config.json -m on -a 00b99ed83a12d5d20aae7db4168c581b6ee01d87 --no-discovery --pin --unsafe-transactions

其他命令行参数
--network-id 1108 --ipc --listen 30307 --port 30307 -d ipctest --db-path db

json rpc接口

• 获取账户列表
  curl -X POST --data '{"jsonrpc":"2.0","method":"eth_accounts","params":[],"id":1}' http://127.0.0.1:8545

• 得到块高度
  curl -X POST --data '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":83}' http://127.0.0.1:8545

ethereum-console

连接到cpp-ethereum的工具，因安装过程多次失败，弃之

测试账户

account2
0x00b99ed83A12D5D20AAE7Db4168c581B6Ee01D87

account3
0x9ee26cD93fB26B6948500892ee75ba9399927D10

account1
0x57fE2bf5d51Eed594a9c07064aaEd7410d403523

MetaMask连接私有链

在网络设置中选择：自定义RPC

使用remix部署和执行合约

1.编写合约
2.编译合约
3.部署合约
    1.environment选择Injected Web3
    2.连接MetaMask
    3.MetaMask显示一笔部署合约交易
4.合约部署完毕
    Deployed Contracts下面显示合约的名字和地址
5.调用合约    
    在Deployed Contracts下面执行合约
6.remix中的合约如何保存在本地
    需要用到remixd

先看项目代码里面的doc文档

Dependencies
    use Hunter package manager
Database Layout
    use k-v database include three： 
        Blocks
            BlockChain class.
        Extras
        State 
            State class 
            Merkle Patricia Trie implemenation is in TrieDB.h.

交易的代码
1.普通的交易
2.创建智能合约的交易
3.执行智能合约的交易

虚拟机执行的几个相关区

栈区
内存区
storage区

nohup python3 -u init.py runserver --host 172.19.3.68 --port 8080

config.json

{
  "sealEngine": "Ethash",
  "params": {
    "accountStartNonce": "0x00",
    "maximumExtraDataSize": "0x20",
    "homesteadForkBlock": "0x00",
    "daoHardforkBlock": "0x00",
    "EIP150ForkBlock": "0x00",
    "EIP158ForkBlock": "0x00",
    "byzantiumForkBlock": "0x00",
    "constantinopleForkBlock": "0x00",
    "constantinopleFixForkBlock": "0x00",
    "istanbulForkBlock": "0x00",
    "minGasLimit": "0x5208",
    "maxGasLimit": "0x7fffffffffffffff",
    "tieBreakingGas": false,
    "gasLimitBoundDivisor": "0x0400",
    "minimumDifficulty": "0x100000",
    "difficultyBoundDivisor": "0x0800",
    "durationLimit": "0x0d",
    "blockReward": "0x4563918244F40000",
    "networkID" : "0x42",
    "chainID": "0x42",
    "allowFutureBlocks" : false
  },
  "genesis": {
    "nonce": "0x0000000000000042",
    "difficulty": "0x100000",
    "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "author": "0x0000000000000000000000000000000000000000",
    "timestamp": "0x5A5B92D7",
    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "extraData": "0x655741534d2074657374206e6574776f726b2030",
    "gasLimit": "0x989680"
  },
  "accounts": {
    "00b99ed83a12d5d20aae7db4168c581b6ee01d87": {
        "balance" : "0x200000000000000000000000000000000000000000000000000000000000000"
    }
  }
}