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node-fetchvsem-http-request

MIT 204 10 8,631
237.2 million (month) Dec 28 2012 3.3.2(4 months ago)
1,218 4 18 MIT
1.1.7(3 years ago) Oct 25 2009 247.3 thousand (month)

node-fetch is a lightweight library that provides a fetch()-like API for making HTTP requests in Node.js. It is a light-weight implementation of the Fetch API, which is mostly compatible with the browser's version.

node-fetch is primarily known as almost identical package fetch() is included in web browsers so it shares the same use common API. It's great starting point for people coming from front-end environment.

em-http-request is a Ruby gem for making asynchronous HTTP requests using EventMachine. It allows you to perform multiple requests simultaneously and handle the responses as they come in, rather than waiting for each request to complete before making the next one.

In short it supports: - Asynchronous HTTP API for single & parallel request execution - Keep-Alive and HTTP pipelining support - Auto-follow 3xx redirects with max depth - Automatic gzip & deflate decoding - Streaming response processing - Streaming file uploads - HTTP proxy and SOCKS5 support - Basic Auth & OAuth - Connection-level & global middleware support - HTTP parser via http_parser.rb - Works wherever EventMachine runs: Rubinius, JRuby, MRI

Highlights


popular

Example Use


const fetch = require('node-fetch');

// fetch supports both Promises and async/await
fetch('http://httpbin.org/get')
    .then(res => res.text())
    .then(body => console.log(body))
    .catch(err => console.error(err));
const response = await fetch('http://httpbin.org/get');

// for concurrent scraping Promise.all can be used
const results = await Promise.all([
  fetch('http://httpbin.org/html'),
  fetch('http://httpbin.org/html'),
  fetch('http://httpbin.org/html'),
])

// POST requests
await fetch('http://httpbin.org/post', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ name: 'John Doe' }),
})

// Proxy use:
const agent = new https.Agent({
    rejectUnauthorized: false,
    proxy: {
        host: 'proxy.example.com',
        port: 8080
    }
});

await fetch('https://httpbin.org/ip', { agent })

// setting headers and cookies
const headers = new fetch.Headers();
headers.append('Cookie', 'myCookie=123');
headers.append('X-My-Header', 'myValue');

await fetch('https://httpbin.org/headers', { headers })
EventMachine.run {
  http = EventMachine::HttpRequest.new('http://google.com/').get :query => {'keyname' => 'value'}

  # add callback for errors:
  http.errback { p 'Uh oh'; EM.stop }

  # add callback for successful requests
  http.callback {
    p http.response_header.status
    p http.response_header
    p http.response

    EventMachine.stop
  }
}

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