Node.js/Axios 无法连接到本地主机

Question

我有一个在我的计算机上本地运行的加密货币 (Nano) Node 。它有一个 RPC API，我已经测试过我可以使用 curl 成功地调用它。例如

curl -d '{ "action": "account_balance", "account": "xrb_1aaprwcu9fac1tw3wesud5txb1zuiroti5xfr19bwozitjnnmbcbwpr1w95f"}' localhost:7076

但是我试图在 Node 脚本中做同样的事情并不断得到 ECONNREFUSED

这是我的 Node 脚本(重要部分)。

const axios = require('axios')
const config = require('./config')

const rpc = axios.create({
  baseURL: 'localhost:7076', // I've also tried 'http://localhost:7076'
  // I've tried with and without proxy settings, I don't understand proxies very well though
  /*proxy: {
    host: '127.0.0.1',
    port: 7077
  }*/
})

function createAddress(accountIndex) {
  // Ensure accountIndex is a string
  accountIndex = accountIndex + ''
  // Get a new private key
  return rpc.post('/', {
    action: 'deterministic_key',
    index: accountIndex,
    seed: config.walletSeed
  })
    // Add to the local wallet
    .then(function(result){
      return rpc.post('/', {
        action: 'wallet_add',
        key: result.private,
        wallet: config.walletId
      })
    })
    // Return the account address
    .then(function(result){
      return result.account
    })
    .catch(function(err) {
      console.log('Error', err)
    })
}

createAddress(52).then(function(address){
  console.log(address)
})

这是错误。

Error { Error: connect ECONNREFUSED 127.0.0.1:7076
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1170:14)
  errno: 'ECONNREFUSED',
  code: 'ECONNREFUSED',
  syscall: 'connect',
  address: '127.0.0.1',
  port: 7076,
  config:
   { adapter: [Function: httpAdapter],
     transformRequest: { '0': [Function: transformRequest] },
     transformResponse: { '0': [Function: transformResponse] },
     timeout: 0,
     xsrfCookieName: 'XSRF-TOKEN',
     xsrfHeaderName: 'X-XSRF-TOKEN',
     maxContentLength: -1,
     validateStatus: [Function: validateStatus],
     headers:
      { Accept: 'application/json, text/plain, */*',
        'Content-Type': 'application/json;charset=utf-8',
        'User-Agent': 'axios/0.18.0',
        'Content-Length': 117 },
     method: 'post',
     baseURL: 'http://localhost:7076',
     url: 'http://localhost:7076/',
     data: '{"action":"deterministic_key","index":"52","seed":"***"}' },
  request:
   Writable {
     _writableState:
      WritableState {
        objectMode: false,
        highWaterMark: 16384,
        finalCalled: false,
        needDrain: false,
        ending: false,
        ended: false,
        finished: false,
        destroyed: false,
        decodeStrings: true,
        defaultEncoding: 'utf8',
        length: 0,
        writing: false,
        corked: 0,
        sync: true,
        bufferProcessing: false,
        onwrite: [Function: bound onwrite],
        writecb: null,
        writelen: 0,
        bufferedRequest: null,
        lastBufferedRequest: null,
        pendingcb: 0,
        prefinished: false,
        errorEmitted: false,
        bufferedRequestCount: 0,
        corkedRequestsFree: [Object] },
     writable: true,
     _events:
      { response: [Function: handleResponse],
        error: [Function: handleRequestError] },
     _eventsCount: 2,
     _maxListeners: undefined,
     _options:
      { protocol: 'http:',
        maxRedirects: 21,
        maxBodyLength: 10485760,
        path: '/',
        method: 'post',
        headers: [Object],
        agent: undefined,
        auth: undefined,
        hostname: 'localhost',
        port: '7076',
        nativeProtocols: [Object],
        pathname: '/' },
     _redirectCount: 0,
     _requestBodyLength: 117,
     _requestBodyBuffers: [ [Object] ],
     _onNativeResponse: [Function],
     _currentRequest:
      ClientRequest {
        _events: [Object],
        _eventsCount: 6,
        _maxListeners: undefined,
        output: [],
        outputEncodings: [],
        outputCallbacks: [],
        outputSize: 0,
        writable: true,
        _last: true,
        upgrading: false,
        chunkedEncoding: false,
        shouldKeepAlive: false,
        useChunkedEncodingByDefault: true,
        sendDate: false,
        _removedConnection: false,
        _removedContLen: false,
        _removedTE: false,
        _contentLength: null,
        _hasBody: true,
        _trailer: '',
        finished: false,
        _headerSent: true,
        socket: [Socket],
        connection: [Socket],
        _header: 'POST / HTTP/1.1\r\nAccept: application/json, text/plain, */*\r\nContent-Type: application/json;charset=utf-8\r\nUser-Agent: axios/0.18.0\r\nContent-Length: 117\r\nHost: localhost:7076\r\nConnection: close\r\n\r\n',
        _onPendingData: [Function: noopPendingOutput],
        agent: [Agent],
        socketPath: undefined,
        timeout: undefined,
        method: 'POST',
        path: '/',
        _ended: false,
        res: null,
        aborted: undefined,
        timeoutCb: null,
        upgradeOrConnect: false,
        parser: null,
        maxHeadersCount: null,
        _redirectable: [Circular],
        [Symbol(isCorked)]: false,
        [Symbol(outHeadersKey)]: [Object] },
     _currentUrl: 'http://localhost:7076/' },
  response: undefined }

我觉得我已经尝试了无数种配置变体。我没有得到什么？

Answer 1

这是 4 个月后，但我一直在努力弄清楚同样的事情。

尝试像这样更改您的实例配置:

  const rpc = axios.create({
    baseURL: 'localhost:7076', 
    proxy: false  
})

我找不到解决方案，所以我最终挖掘了 axios 的代码。

我在/lib/adapters/http.js 的第 89 行找到了这个:

var proxy = config.proxy;
if (!proxy && proxy !== false) {
  var proxyEnv = protocol.slice(0, -1) + '_proxy';
  var proxyUrl = process.env[proxyEnv] || process.env[proxyEnv.toUpperCase()];
  if (proxyUrl) {
    var parsedProxyUrl = url.parse(proxyUrl);
    proxy = {
      host: parsedProxyUrl.hostname,
      port: parsedProxyUrl.port
    };

    if (parsedProxyUrl.auth) {
      var proxyUrlAuth = parsedProxyUrl.auth.split(':');
      proxy.auth = {
        username: proxyUrlAuth[0],
        password: proxyUrlAuth[1]
      };
    }
  }
}

if (proxy) {
  options.hostname = proxy.host;
  options.host = proxy.host;
  options.headers.host = parsed.hostname + (parsed.port ? ':' + parsed.port : '');
  options.port = proxy.port;
  options.path = protocol + '//' + parsed.hostname + (parsed.port ? ':' + parsed.port : '') + options.path;...

我读它的方式是，如果您的配置中没有代理条目，或者如果您的代理条目不是 false( bool 值)。然后它使 var 'proxy' 等于它的默认代理。所以当它到达第 110 行时......

if (proxy) {...

...有一个代理，(它刚刚创建的默认值)并且它将使用它。

当我将 proxy: false 添加到我的配置时，axios 按预期工作。