EOS开发(六)使用cleo连接主网/测试网第三方节点

1.前言

之前我们都是运行在EOS本地节点的，如果想加入主网或者测试网络，有两种方式。

一种是同步主网/测试网的所有区块数据，自己成为一个节点。这种方式在测试网络上还可以注册成为生产区块的节点，并拉票成为超级节点，获得真正出块的权力。

另外一种是通过连接第三方节点的方式，自己不需要同步区块数据。这篇文章讲的就是第二种连接方式。

2.准备工作

创建一个钱包，管理测试网络的私钥

创建一个名为testnet.wallet的钱包

yuyangdeMacBook-Pro:cleos yuyang$ cleos wallet create -n testnet --to-console
Creating wallet: testnet
Save password to use in the future to unlock this wallet.
Without password imported keys will not be retrievable.
"PW5Kxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

创建两个私钥

yuyangdeMacBook-Pro:cleos yuyang$ cleos create key --to-console
Private key: 5KPZxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Public key: EOS6cnhSLTn4eSUEqS4nC8frYTsVsjeH2M3hos1TUeCgme2Yim5Q5
yuyangdeMacBook-Pro:cleos yuyang$ cleos create key --to-console
Private key: 5Kfexxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Public key: EOS6Z7mUQeFC2cQTT3xMyZh2wsLQoHih1bTMgRhr3dbichprTi7Rc

导入私钥

yuyangdeMacBook-Pro:cleos yuyang$ cleos wallet import --private-key 5KPZxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -n testnet
imported private key for: EOS6cnhSLTn4eSUEqS4nC8frYTsVsjeH2M3hos1TUeCgme2Yim5Q5
yuyangdeMacBook-Pro:cleos yuyang$ cleos wallet import --private-key 5Kfexxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -n testnet
imported private key for: EOS6Z7mUQeFC2cQTT3xMyZh2wsLQoHih1bTMgRhr3dbichprTi7Rc

查看私钥

yuyangdeMacBook-Pro:cleos yuyang$ cleos wallet private_keys --password PW5Kxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -n testnet
[[
    "EOS6Z7mUQeFC2cQTT3xMyZh2wsLQoHih1bTMgRhr3dbichprTi7Rc",
    "5Kfexxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
  ],[
    "EOS6cnhSLTn4eSUEqS4nC8frYTsVsjeH2M3hos1TUeCgme2Yim5Q5",
    "5KPZxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
  ]
]

3.测试网络

3.1 通过Jungle Testnet创建账户

打开Jungle Testnet
http://jungle.cryptolions.io

点击Create account起一个账户名称，然后输入刚才生成的两个私钥对应的公钥

3.2 免费获取测试eos

点击Faucet输入刚才创建的账户名称。每6小时获取一次

3.3 获取第三方节点IP

点击API endpoints

随意选择一个节点IP

http://jungle.cryptolions.io:18888

3.4 通过第三方节点与测试网络交互

使用cleos -u http://jungle.cryptolions.io:18888指定我们要交互的节点IP

查询chain_id：

yuyangdeMacBook-Pro:cleos yuyang$ cleos -u http://jungle.cryptolions.io:18888 get info
{
  "server_version": "e87d245d",
  "chain_id": "038f4b0fc8ff18a4f0842a8f0564611f6e96e8535901dd45e43ac8691a1c4dca",
  "head_block_num": 13203870,
  "last_irreversible_block_num": 13203541,
  "last_irreversible_block_id": "00c97855858529dc1252cf54ac19720308756ad9302e5d38ecfedccc485d66ae",
  "head_block_id": "00c9799e9749073571d3499eb66774d6d260144f8bb8099a43969353f95fab8c",
  "head_block_time": "2018-09-05T03:08:53.500",
  "head_block_producer": "lioninjungle",
  "virtual_block_cpu_limit": 200000000,
  "virtual_block_net_limit": 1048576000,
  "block_cpu_limit": 199900,
  "block_net_limit": 1048576,
  "server_version_string": "v1.2.3-dirty"
}

038f4b0fc8ff18a4f0842a8f0564611f6e96e8535901dd45e43ac8691a1c4dca表示我们连接的是测试网络

查询下刚才在测试网络上创建的账户信息：

yuyangdeMacBook-Pro:cleos yuyang$ cleos -u http://jungle.cryptolions.io:18888 get account testnetyy111
permissions: 
     owner     1:    1 EOS6cnhSLTn4eSUEqS4nC8frYTsVsjeH2M3hos1TUeCgme2Yim5Q5
        active     1:    1 EOS6Z7mUQeFC2cQTT3xMyZh2wsLQoHih1bTMgRhr3dbichprTi7Rc
memory: 
     quota:     170.8 KiB    used:     3.365 KiB  

net bandwidth: 
     staked:        100.0000 EOS           (total stake delegated from account to self)
     delegated:       0.0000 EOS           (total staked delegated to account from others)
     used:                 0 bytes
     available:        18.32 MiB  
     limit:            18.32 MiB  

cpu bandwidth:
     staked:        100.0000 EOS           (total stake delegated from account to self)
     delegated:       0.0000 EOS           (total staked delegated to account from others)
     used:                 0 us   
     available:        3.661 sec  
     limit:            3.661 sec  

EOS balances: 
     liquid:        10000.0000 EOS
     staked:          200.0000 EOS
     unstaking:         0.0000 EOS
     total:         10200.0000 EOS

producers:     <not voted>

可以看到创建账号的时候，系统为此账号购买了170kb的RAM，NET和CPU各抵押了100 EOS，加上我们申请的10000 EOS，现在此账号共有10200 EOS

4.主网

与测试网络相同，指定我们要交互的主网节点的IP
主网节点IP有很多，这里同样随意选择一个https://api.eosnewyork.io