URL Metrics

gistfile1.rb

#  Based on https://github.com/ripienaar/mcollective-plugins/blob/master/agent/urltest/urltest.rb

require 'net/http'
require 'socket'

req_url = "http://www.google.com"

url = URI.parse(req_url)

times = {}

if url.scheme == "http"
    times["beforedns"] = Time.now
    name = TCPSocket.gethostbyname(url.host)
    times["afterdns"] = Time.now

    times["beforeopen"] = Time.now
    socket = TCPSocket.open(url.host, url.port)
    times["afteropen"] = Time.now

    socket.print("GET #{url.request_uri} HTTP/1.1\r\nHost: #{url.host}\r\nUser-Agent: Webtester\r\nAccept: */*\r\nConnection: close\r\n\r\n")
    times["afterrequest"] = Time.now

    response = Array.new

    while line = socket.gets
	times["firstline"] = Time.now unless times.include?("firstline")

	response << line
    end

    socket.close

    times["end"] = Time.now

    lookuptime = times["afterdns"] - times["beforedns"]
    connectime = times["afteropen"] - times["beforeopen"]
    prexfertime = times["firstline"] - times["afteropen"]
    startxfer = times["firstline"] - times["afterrequest"]
    bytesfetched = response.join.length
    totaltime = times["end"] - times["beforedns"]

    puts "DNS Lookup Time = #{lookuptime}"
    puts "Time to connect = #{connectime}"
    puts "Time to send request = #{prexfertime}"
    puts "Time to fetch response = #{startxfer}"
    puts "Total time = #{totaltime}"
    
else
    reply.fail "Unsupported url scheme: #{url.scheme}"
    return
end