使用GOT初始化API请求时，量角器脚本失败

编程问答 2022-08-14

问题描述

我正在尝试从request迁移到got。

使用节点执行独立的javascript文件时，我可以成功使用got执行API调用

但是在执行来自量角器规格文件的相同got请求时，我面临挑战。

文件夹结构 

.
├── build
│   ├── GotImpl.js
│   ├── basic-node-test.js
│   └── protractor-test.js
├── config
│   └── protractor.config.js
├── globals.js
├── package-lock.json
├── package.json
├── src
│   ├── GotImpl.ts
│   ├── basic-node-test.ts
│   └── protractor-test.ts
└── tsconfig.json

./ package.json 

{
  "name": "protractor-got","version": "1.0.0","description": "GOT and Protractor Test","main": "index.js","scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },"author": "","license": "ISC","dependencies": {
    "@types/jasmine": "^3.5.14","@types/node": "^14.6.0","got": "^11.5.2","jasmine-data-provider": "^2.2.0","jasmine-expect": "^4.0.3","protractor": "^7.0.0"
  },"devDependencies": {
    "typescript": "^4.0.2"
  }
}

./ tsconfig.js 

{
  "compilerOptions": {
    "target": "es5","module": "commonjs","outDir": "build","strict": true,"esModuleInterop": true 
  }
}

./ src / GotImpl.ts -此类具有 executeGetRequest 方法，用于根据提供的requestURL执行get操作> 

const got = require('got');

export class GotImpl {
    options: any;
    responseBody: any;

    constructor() {
        this.options = {};
        this.options['headers'] = {};
        this.options['method'] = "GET";
        this.options.https = {};
        this.options.https.rejectUnauthorized = false;
    }

    async executeGetRequest(requestURL: string): Promise<any> {
        return new Promise<any>(async (resolve,reject) => {
            let successfulExecution: boolean = false;
            let apiRes = await got(requestURL,this.options);
            resolve(await apiRes.body);
        })

    }
}

./ src / basic-node-test.ts -此文件是一个简单的TypeScript文件，可通过调用 GotImpl的 executeGetRequest 方法来执行get操作。 类

import { GotImpl } from "./GotImpl"

(async () => {

    const gottest = new GotImpl();
    await gottest.executeGetRequest('https://jsonplaceholder.typicode.com/todos/1').then(async (responseBody) => {
        console.log('Response Body: ' + (await JSON.stringify(JSON.parse(responseBody),null,5)));
    });
})();

执行basic-node-test.ts文件[成功执行]时的输出 

$ node ./build/basic-node-test.js 
Response Body: {
     "userId": 1,"id": 1,"title": "delectus aut autem","completed": false
}

问题

现在，我正在尝试在量角器脚本中执行 executeGetRequest 方法（属于 GotImpl 类） >

./ src / protractor-test.ts -量角器规格文件

import { GotImpl } from "./GotImpl";

describe('Got in Protractor',() => {
    it('Get Access Managers based on TIN',async (done) => {
        console.log("Start of GOT Test");
        const gottest = new GotImpl();
        await gottest.executeGetRequest('https://jsonplaceholder.typicode.com/todos/1').then(async (responseBody) => {
            console.log('Response Body: ' + (await JSON.stringify(JSON.parse(responseBody),5)));
        });
        console.log("End of GOT Test")
        await done();
    });

    process.on('unhandledRejection',(reason) => {
        console.error(reason);
        process.exit(1);
    });

});

./ globals.js -捕获全局变量

var path = require("path");
var fs = require("fs");

module.exports = function setGlobals() {
  global.__root = path.dirname(fs.realpathSync(__filename));
  global.__specs = path.join(__root,"/build/");
};

./ config / protractor.config.js 

require('../globals').call();

var chromeHeadless = {
    browserName: 'chrome',chromeOptions: {
        args: [
            "--no-sandBox","--headless","--disable-gpu","--window-size=800,600",'--disable-extensions','--disable-plugins','--disable-infobars'
        ],prefs: {
            'profile.password_manager_enabled': false,'credentials_enable_service': false,'password_manager_enabled': false
        }
    }
}

exports.config = {
    framework: 'jasmine',capabilities: chromeHeadless,directConnect: true,specs: [__specs + 'protractor-test.js']
}

使用got执行API请求时，在量角器中抛出了异常

$ ./node_modules/protractor/bin/protractor ./config/protractor.config.js 
Start of Protractor Test Execution
[21:00:19] I/launcher - Running 1 instances of WebDriver
[21:00:19] I/direct - Using ChromeDriver directly...
Inside On Prepare method
End.....
Start of GOT Test
RequestError: connect ECONNREFUSED 127.0.0.1:443
    at ClientRequest.<anonymous> (/Users/xxxx/MONO-REPO/protractor-project/node_modules/got/dist/source/core/index.js:891:25)
    at Object.onceWrapper (events.js:422:26)
    at ClientRequest.emit (events.js:327:22)
    at ClientRequest.origin.emit (/Users/xxxx/MONO-REPO/protractor-project/node_modules/@szmarczak/http-timer/dist/source/index.js:39:20)
    at TLSSocket.socketErrorListener (_http_client.js:426:9)
    at TLSSocket.emit (events.js:315:20)
    at emitErrorNT (internal/streams/destroy.js:92:8)
    at emitErrorAndCloseNT (internal/streams/destroy.js:60:3)
    at processticksAndRejections (internal/process/task_queues.js:84:21)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1141:16) {
  code: 'ECONNREFUSED',timings: {
    start: 1598493623188,socket: 1598493623189,lookup: 1598493623189,connect: undefined,secureConnect: undefined,upload: undefined,response: undefined,end: undefined,error: 1598493623190,abort: undefined,phases: {
      wait: 1,dns: 0,tcp: undefined,tls: undefined,request: undefined,firstByte: undefined,download: undefined,total: 2
    }
  }
}
[21:00:23] E/launcher - Process exited with error code 1

目前采取的方法

  1. 已禁用NODE_TLS_REJECT_UNAUTHORIZED
  2. 在选项中设置隧道（在 GotImpl.ts 中）
const tunnel = require('tunnel');
this.tunnelingAgent = tunnel.httpOverHttps({
            proxy: { // Proxy settings
                host: process.env.PROXY_HOST,// Defaults to 'localhost'
                port: process.env.PROXY_PORT,// Defaults to 80  
                proxyAuth: process.env.PROXY_AUTH,}
        });

this.options.agent = {};
this.options.agent.https = this.tunnelingAgent;

感谢您阅读本文。我们非常感谢您为解决 ECONNREFUSED 错误提供的帮助。

解决方法

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