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Development

‘Set-Cookie’ is not included in the response headers

I’m trying to get the set-cookie header from the http response, but it’s not showing up for most of the requests. Using https://www.southwest.com/ as an example, you can see that https://bs.serving-sys.com/Serving/ActivityServer.bs?cn=as&ActivityID=1345510&rnd=459203.51759912557&fare%20class=[fare%20class]&business%20or%20leisure=[business%20or%20leisure]&number%20of%20passengers=[number%20of%20passengers]&date=[date]&destination=[destination]&origination=[origination] sets 3 cookies: Puppeteer code: const puppeteer = require(‘puppeteer’); async function getResponseCookies() { function handleResponse(response) { const url = response.url(); const headers = response.headers(); […]

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Cryptocurrency Development Ethereum

Truffle always saying “Error: Callback was already called.” when using Solidity test

I have a project where I’m already using Javascript tests and they work. I now, however, want to write a Soldity test. I copied TestMetaCoin.sol from the metacoin example and deleted all other files in the project’s test directory. I then removed everything metacoin-dependent from the file and changed the pragma a bit: pragma solidity […]

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Development

Puppeteer Error, Cannot read property ‘getProperty’ of undefined while scraping white pages

I’m trying to scrape an address from whitepages.com, but my scraper keeps throwing this error every time I run it. (node:11389) UnhandledPromiseRejectionWarning: TypeError: Cannot read property ‘getProperty’ of undefined here’s my code: const puppeteer = require(‘puppeteer’) async function scrapeAddress(url){ const browser = await puppeteer.launch(); const page = await browser.newPage(); await page.goto(url,{timeout: 0, waitUntil: ‘networkidle0’}); const […]

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Development

Why does my axios call on POST gets CORS error but GET calls do not?

Hi all and happy new year. I’m having an issue in which, my POST requests are getting blocked by CORS, but the GET requests are functioning just fine. I believe the server is setup properly and I think my axios call is correct – not sure what I’m doing wrong. My biggest suspicion is that […]

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Cryptocurrency Development Ethereum

Building Blockchain Decentralized Apps (DApps) tutorial. When i am writing web3 getting this kind of responseresponse

Web3Shim { currentProvider: [Getter/Setter], _requestManager: RequestManager { provider: HttpProvider { host: ‘http://127.0.0.1:7545‘, httpAgent: [Agent], withCredentials: false, timeout: 0, headers: undefined, connected: true, send: [Function], _alreadyWrapped: true }, providers: { WebsocketProvider: [Function: WebsocketProvider], HttpProvider: [Function: HttpProvider], IpcProvider: [Function: IpcProvider] }, subscriptions: {} }, givenProvider: null, providers: { WebsocketProvider: [Function: WebsocketProvider], HttpProvider: [Function: HttpProvider], axMessageSize’

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Development

Call jQuery from JavaScript onclick

I am a novice with JavaScript/jQuery, so sorry if my question is simple. I have the following HTML which calls for jQuery routines: <div class=”global-actions”> <div class=”left-action” id=”prev”><img src=”resources/previous.png” width=”28″ height=”28″/></div> <div class=”top-action” id=”flipper”><img src=”resources/flip.png” width=”28″ height=”28″/></div> <div class=”right-action” id=”next”><img src=”resources/next.png” width=”28″ height=”28″/></div> </div> Here jQuery: $(document).ready(function(){ // FLIP $(‘#flipper’).bind(‘click’, function(){ $(‘.card.current’).toggleClass(‘flip’); }); // CYCLE […]

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Cryptocurrency Development Ethereum

Could not call contract function with its signature

Web3.js documentation says here that the methods of a smart contract are available through: The name: myContract.methods.myMethod The name with parameters: myContract.methods[‘myMethod(uint256)’] The signature: myContract.methods[‘0x58cf5f10’] but when i call the method with 2nd and 3rd option, I could not retrieved the value, rather it show lot of signature of objects.. here is my code async […]

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Cryptocurrency Development Ethereum

When Do this command $ truffle console truffle(development)> web3.eth.accounts

/toke_sale$ truffle version Truffle v5.0.44 (core: 5.0.44) Solidity v0.5.12 (solc-js) Node v10.17.0 Web3.js v1.2.2 ~/toke_sale$ truffle console truffle(development)> web3.eth.accounts Accounts { currentProvider: [Getter/Setter], _requestManager: RequestManager { provider: HttpProvider { host: ‘http://127.0.0.1:7545‘, httpAgent: [Agent], withCredentials: false, timeout: 0, headers: undefined, connected: true, send: [Function], _alreadyWrapped: true }, providers: { WebsocketProvider: [Function: WebsocketProvider], HttpProvider: [Function: HttpProvider], IpcProvider: […]

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Development Vue

Koa 404 when calling from Vue

I am trying to build an app with Koa and Nuxt. this is what I have: Define service to retrieve from firestore: const Firestore = require(‘@google-cloud/firestore’); const getItems = () => { const db = new Firestore({ projectId: ‘*******’, keyFilename: “******” }); db.collection(‘items’).get() .then((snapshot) => { return snapshot; }) } Define them in routes.js: const […]

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Development Facebook Social Media

call my function from API to front using react and node

i need to call my connexion() (api/connexion) from my API to the front(using react), it’s an authentication function, it should generate a token and i need to get this one on front (render()) to use it for listing my contacts for example what i did is getting contacts using a token that i included on […]