test case for "An error occured on select: 4" in typhoeus/ethon; start httppause and then run makerequest.rb

httppause.sh

#!/bin/bash

if [[ "$NESTED" ]]; then

    IFS=$( echo -e '\r' )
    while read line; do
        [[ -z "$line" ]] && break
    done

    sleep 10

    echo -e 'HTTP/1.1 200 OK\r'
    echo -e 'Connection: close\r'
    echo -e 'Content-length: 5\r'
    echo -e '\r'
    echo "done"

else
    export NESTED=1
    exec socat -x TCP-LISTEN:9991,fork SYSTEM:$0,pipes
fi

makerequest.rb

#!/usr/bin/ruby

require 'typhoeus'

def parent(cpid)
  sleep 5
  Process.kill("USR1", cpid)
  Process.wait
end

def child
  Signal.trap("USR1") do
    puts "USR1 interrupted"
  end

  hydra = Typhoeus::Hydra.hydra
  8.times do
   request = Typhoeus::Request.new('http://localhost:9991/', method: :get)
   request.on_complete do |response|
     puts response.body
   end
   hydra.queue(request)
  end
  hydra.run
end

if pid = fork
  parent pid
else
  child
end