rand-client.js

const http = require('http')

const count = Number(process.argv[2])

// Seed the generator with the current time (in milliseconds)
const seedRequest =
  http.request('http://localhost/seed', {method: 'POST'}, _ => {
    // Then obtain `count` random numbers
    getNumbers()
  })
seedRequest.write(JSON.stringify({seed: Date.now()}))
seedRequest.end()

function getNumbers() {
  for (let i = 0; i < count; i++) {
    http.get('http://localhost/next', res => {
      let body = ''
      res.setEncoding('utf8')
        .on('data', chunk => {
          // Concatenate response body into a single string
          body += chunk
        })
        .on('end', () => {
          // Parse the JSON response and print the number
          console.log(JSON.parse(body).value)
        })
    })
  }
}