http.go

package main

import (
	"bytes"
	"fmt"
	"net"
	"net/http"
	"net/http/httputil"
	"strconv"
)

func main() {

	tcpConn, _ := net.Dial("tcp", "127.0.0.1:4000")
	conn := httputil.NewClientConn(tcpConn, nil)

	for i := 0; i < 10; i++ {

		req, _ := http.NewRequest("POST", "/candidates", bytes.NewBuffer([]byte(fmt.Sprintf(`{ "id": "%v"}`, "id"+strconv.Itoa(i)))))
		req.Header.Set("Content-Type", "application/json")

		resp, err := conn.Do(req)

		if err != nil {
			panic(err)
		}

		fmt.Println(resp)
	}

}