package main

import (
	"io/ioutil"
	"log"
	"net"
	"net/http"
	"net/url"
	"os"
	"os/signal"
	"syscall"
	"time"
)

func main() {
	log.SetFlags(log.Lshortfile | log.Ldate | log.Ltime)
	client := &http.Client{
		Transport: &http.Transport{
			//Proxy: http.ProxyFromEnvironment,
			DialContext: (&net.Dialer{
				Timeout:   5 * time.Second,
				KeepAlive: 30 * time.Second,
			}).DialContext,
			MaxIdleConns:          100,
			IdleConnTimeout:       90 * time.Second,
			TLSHandshakeTimeout:   10 * time.Second,
			ExpectContinueTimeout: 1 * time.Second,
		},
	}

	go func() {
		req, _ := http.NewRequest(http.MethodGet, "https://www.google.com", nil)
		client.Transport.(*http.Transport).Proxy = func(request *http.Request) (url *url.URL, e error) {
			return url.Parse("http://10.101.32.12")
		}
		response, err := client.Do(req)
		if err != nil {
			log.Println(err)
			return
		}

		defer response.Body.Close()
		data, _ := ioutil.ReadAll(response.Body)
		log.Println(string(data))
	}()

	go func() {
		req, _ := http.NewRequest(http.MethodGet, "https://www.google.com", nil)
		client.Transport.(*http.Transport).Proxy = func(request *http.Request) (url *url.URL, e error) {
			return url.Parse("http://10.101.32.13")
		}
		response, err := client.Do(req)
		if err != nil {
			log.Println(err)
			return
		}

		defer response.Body.Close()
		data, _ := ioutil.ReadAll(response.Body)
		log.Println(string(data))

	}()

	chOver := make(chan os.Signal, 1)
	signal.Notify(chOver, syscall.SIGINT, syscall.SIGTERM)
	<-chOver
}