attachToTangle - 计算交易POW

为指定的交易计算POW。

调用参数

• trunkTransaction：主干交易哈希，字符串，必须
• branchTransaction：分支交易哈希，字符串，必须
• minWeightMagnitude：最小重量级，整数，必须
• trytes：交易三进制字符串数组，必须

返回结果

attachToTangle调用返回包含有效nonce指的三进制交易码流，其最后 243个trytes组成如下：

trunkTransaction + branchTransaction + nonce

调用成功时返回的HTTP状态码为200，示例如下：

{
  "trytes": ["OQBOQQOUAWPFCRKELBAS9DHKZ ...", "RGQKNQPXHC9QAVSFDPPFBSKTS ..."],
  "duration": 59
}

调用失败时返回的HTTP状态码为400，示例如下：

{
  "error": "'command' parameter has not been specified"
}

示例代码

Python

import urllib2
import json

command = { 
"command": "attachToTangle", 
"trunkTransaction": "VDJJSJVAIQXAUIZOWYLFXVTKFXHNZOGYFRIKBYWD9ZI9NNKYVOLWRJKCXXF9DOXFEGGFWSRVLHVLVADJI",
"branchTransaction": "WXQWVSAJVZLEHQTNFRUBEECZDOJGBRCTUBNDEKDFHKPMTVAQILPTQNG9EEPNEB9PLQZWZAZAKSIJBPG9P",
"minWeightMagnitude": 14,
"trytes": [
  "HOHZUBAFSGNYMOOYGPCKANKOR ...",
  "IOELDJYWAZBKWBTQZYLPTPLIT ..."
  ]
}

stringified = json.dumps(command)

headers = {
    'content-type': 'application/json',
    'X-IOTA-API-Version': '1'
}

request = urllib2.Request(url="http://localhost:14265", data=stringified, headers=headers)
returnData = urllib2.urlopen(request).read()

jsonData = json.loads(returnData)

print jsonData

Node.js

var request = require('request');

var command = { 
"command": "attachToTangle", 
"trunkTransaction": "VDJJSJVAIQXAUIZOWYLFXVTKFXHNZOGYFRIKBYWD9ZI9NNKYVOLWRJKCXXF9DOXFEGGFWSRVLHVLVADJI",
"branchTransaction": "WXQWVSAJVZLEHQTNFRUBEECZDOJGBRCTUBNDEKDFHKPMTVAQILPTQNG9EEPNEB9PLQZWZAZAKSIJBPG9P",
"minWeightMagnitude": 14,
"trytes": [
  "HOHZUBAFSGNYMOOYGPCKANKOR ...",
  "IOELDJYWAZBKWBTQZYLPTPLIT ..."
  ]
};

var options = {
  url: 'http://localhost:14265',
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
        'X-IOTA-API-Version': '1',
    'Content-Length': Buffer.byteLength(JSON.stringify(command))
  },
  json: command
};

request(options, function (error, response, data) {
  if (!error && response.statusCode == 200) {
    console.log(data);
  }
});

命令行

curl http://localhost:14265 \
-X POST \
-H 'Content-Type: application/json' \
-H 'X-IOTA-API-Version: 1' \
-d '{
"command": "attachToTangle",
"trunkTransaction": "VDJJSJVAIQXAUIZOWYLFXVTKFXHNZOGYFRIKBYWD9ZI9NNKYVOLWRJKCXXF9DOXFEGGFWSRVLHVLVADJI",
"branchTransaction": "WXQWVSAJVZLEHQTNFRUBEECZDOJGBRCTUBNDEKDFHKPMTVAQILPTQNG9EEPNEB9PLQZWZAZAKSIJBPG9P",
"minWeightMagnitude": 14,
"trytes": [
  "HOHZUBAFSGNYMOOYGPCKANKOR ...",
  "IOELDJYWAZBKWBTQZYLPTPLIT ..."
  ]
}'