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crulvsgot

MIT 16 1 101
61.7 thousand (month) Nov 09 2016 1.4.0(1 year, 7 months ago)
13,904 10 108 MIT
14.2.1(30 days ago) Mar 27 2014 88.1 million (month)

crul is a R library for sending HTTP requests and web scraping. It is designed to be simple and easy to use, while still providing powerful functionality for working with HTTP requests and scraping web pages.

One of the main features of crul is its intuitive and easy-to-use syntax for sending HTTP requests. It allows you to easily specify the HTTP method, headers, and body of a request, and also provides a simple way to handle the response.

crul also has the ability to handle different types of requests and responses, including GET, POST, PUT, DELETE, and PATCH. It also support for handling redirects, cookies, and authentication.

Another feature of crul is its support for web scraping. The library provides a simple and efficient way to extract data from web pages, using a syntax similar to that of the XML and httr libraries. It also allows to easily filter the extracted data based on a specific criteria.

crul also supports parallel scraping, which allows to make multiple requests at the same time, thus speeding up the scraping process.

In addition to these features, crul has a good compatibility with other R packages such as tidyverse and purrr which facilitates the manipulation of the data obtained after scraping.

Got is a lightweight and powerful HTTP client for Node.js. It is built on top of the http and https modules and provides a simple, consistent API for making HTTP requests.

Got is one of the most feature-rich http clients in NodeJS ecosystem offering http2, proxy and asynchronous support making it ideal for web scraping.

Got also supports many specific domain integrations like AWS, plugins for various public APIs like github.

Note that Got has some inconsistent behaviors when it comes to web scraping use.
For example, it normalizes http headers which is undesired functionality in scraping and should be disabled.

Highlights


http2uses-curlasync
http2asyncpopularextendibletypescriptproxy

Example Use


library(crul)

# Sending a GET request to a website
response <- HttpClient$new("https://www.example.com")$get()
# Sending a POST request to a website
request_body <- list(param1 = "value1", param2 = "value2")
response <- HttpClient$new("https://www.example.com")$post(body = request_body)

# Extracting the status code and body of the response
status_code <- response$status_code()
body <- response$body()

# crul also allows easy asynchronous requests:
urls <- c("https://www.example1.com", "https://www.example2.com", "https://www.example3.com")
# Creating a list of request objects from urls
requests <- lapply(urls, function(url) {
  HttpClient$new(url)$get()
})

# Sending the requests asynchronously
responses <- async(requests)

# Extracting the status code and body of the responses
status_codes <- lapply(responses, function(response) response$status_code())
bodies <- lapply(responses, function(response) response$body())
const got = require('got');

// GET requests are default and can be made calling the module as is:
const response = await got('https://api.example.com');
console.log(response.body);

// POST requests can send 
const response = await got.post('https://api.example.com', {
    json: { name: 'John Doe' },
});
console.log(response.body);

// handling cookies
import {CookieJar} from 'tough-cookie';

const cookieJar = new CookieJar();

await cookieJar.setCookie('foo=bar', 'https://httpbin.org');
await got('https://httpbin.org/anything', {cookieJar});

// using proxy
import got from 'got';
import {HttpsProxyAgent} from 'hpagent';

await got('https://httpbin.org/ip', {
  agent: {
    https: new HttpsProxyAgent({
      keepAlive: true,
      keepAliveMsecs: 1000,
      maxSockets: 256,
      maxFreeSockets: 256,
      scheduling: 'lifo',
      proxy: 'https://localhost:8080'
    })
  }
});

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