client.go

package main

import (
	"fmt"
	"io"
	"io/ioutil"
	"net"
	"net/http"
	"time"
)

func NewHttpClient() *http.Client {
	tr := &http.Transport{
		Dial: (&net.Dialer{
			Timeout:   30 * time.Second,
			KeepAlive: 30 * time.Second,
		}).Dial,
	}
	return &http.Client{
		Transport: tr,
		Timeout:   time.Second * 30,
	}
}

func main() {
	client := NewHttpClient()
	for i := 0; i < 6; i++ {
		fmt.Println("sending request ", i)
		res, err := client.Get("http://localhost:8080")
		if err != nil {
			fmt.Println("Failed ", err)
		}
		io.Copy(ioutil.Discard, res.Body)
		res.Body.Close()
		time.Sleep(10 * time.Second)
	}
}

server.go

package main

import (
	"fmt"
	"net/http"
)

func hello(w http.ResponseWriter, r *http.Request) {
	fmt.Println("hello")
	w.WriteHeader(http.StatusOK)
	w.Write([]byte(`{"hello": "world"}`))
}

func main() {
	http.HandleFunc("/", hello)
	http.ListenAndServe(":8080", nil)
}