EOS系列 - 使用cleos(命令列)發起裸包交易-有解無憂

eos構造裸交易并簽名

1. 需要到鏈上獲取到的資料

獲取 ref_block_prefix
1. get_info以獲取最后一個不可逆的塊號：last_irreversible_block_num
  這是一個螢屏截圖
2. get_block獲取有關該區塊的資訊：這是螢屏截圖
3. 從中找出 ref_block_prefix 的資料

2.1 之后本地可離線構造出未簽名交易資料

然后計算 ref_block_num

const ref_block_num = (info.last_irreversible_block_num) & 0xFFFF

expiration:
- 當前系統時間(按與節點相同的時區算) + 300秒 (cleos默認是30秒)

編碼構造 data :

組裝物件

{
  "code": "eosio.token",
  "action": "transfer",
  "args": {
    "from": "fromaccount",
    "to": "toaccount",
    "quantity": "1.0000 EOS",
    "memo": "memo"
  }
}

編碼

參考 https://developers.eos.io/eosio-nodeos/reference#abi_bin_to_json

參考 https://github.com/OracleChain/PocketEOS-IOS/blob/ca34cd96ebaa773d806a6aa7ddf913504d6a66d5/pocketEOS/SecureModule/EC/EosByteWriter.m

通過api介面構造action所需的data

curl http://192.168.1.201:30088/v1/chain/abi_json_to_bin -X POST -d '{"code":"eosio.token", "action":"transfer", "args":{"from":"xxx", "to":"xxx", "quantity":"xxx", "memo":"xxx"}}'

簽名
- chainid
- sha256
- ECDSA-K1

構造結果(未簽名)

{
    "compression": "none",
    "transaction": {
        "expiration": "2018-08-01T06:11:23",
        "ref_block_num": 10855,
        "ref_block_prefix": 473148127,
        "max_net_usage_words": 0,
        "max_cpu_usage_ms": 0,
        "delay_sec": 0,
        "context_free_actions": [],
        "actions": [{
            "account": "eosio.token",
            "name": "transfer",
            "authorization": [{
                "actor": "fromaccount",
                "permission": "active"
            }],
            "data": "0000000000ea305500000000487a2b9d102700000000000004454f53000000001163726561746564206279206e6f70726f6d"
        }],
        "transaction_extensions": [],
        "signatures": null,
        "context_free_data": []
    },
    "signatures": ["SIG_K1_JwLVG5pRdhvLfJGWkDEBPa7wdLbNeqeRFdvFrKDEryahSwCRpPb75m4auZh8frq6cXsm3dHit8GMbmuuBWxEjH"]
}

2.2 也可以通過cleos命令構造未簽名交易資料

cleos push action eosio.token transfer '{"from":"xxx", "to":"xxx", "quantity":"xxx", "memo":"xxx"}' -p fromaccount@active -jds

-j:	print result as json
-d:	don't broadcast transaction to the network (just print to stdout)
-s:	Specify if unlocked wallet keys should be used to sign transaction

3. 簽名并發送交易

使用上面構造的 [transaction json], 和傳入的私鑰簽名, 并發送交易

./cleos sign -p -k [private-key] '[transaction json]'

-k,--private-key TEXT       The private key that will be used to sign the transaction
-p,--push-transaction       Push transaction after signing

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