Simple Web Server written in Golang

post.go

package main

import (
	"fmt"
	"log"
	"net/http"
	"strings"
	"time"
)

var numberOfPost int32 = 0
var runtimes int = 1020

var failed int = 0
var success int = 0

func main() {

	respChan := make(chan int)

	for i := 0; i < runtimes; i++ {
		go Post(i, respChan)
	}

	go func() {
		for {
			statusCode := <-respChan
			if statusCode == int(200) {
				success++
			} else {
				failed++
			}

			log.Println("Success: ", success)
			log.Println("Failed: ", failed)
		}
	}()

	select {}
}

func Post(msg int, respCh chan int) {

	json := `{"no":"%d"}`

	reader := strings.NewReader(fmt.Sprintf(json, msg))

	client := &http.Client{}
	client.Timeout = 60 * time.Second

	req, err := http.NewRequest("POST", "http://localhost:8000/post", reader)
	req.Header.Add("Content-type", "application/json")

	if err != nil {
		panic(err)
	}

	resp, err := client.Do(req)

	if err != nil {
		panic(err)
	}
	respCh <- resp.StatusCode
	defer resp.Body.Close()
}

srv.go

package main

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

var numberOfRequest = 0

func main() {
	http.HandleFunc("/post", Index)

	http.ListenAndServe("localhost:8000", nil)
}

func Index(w http.ResponseWriter, r *http.Request) {

	rBody, err := ioutil.ReadAll(r.Body)

	if err != nil {
		panic(err)
	}

	time.Sleep(time.Second * 4)
	log.Println(string(rBody))
	numberOfRequest++
	log.Println(numberOfRequest)
	defer r.Body.Close()
}