Request With Two Way SSL With Golang

gistfile1.txt

package main

import (
	"bytes"
	"crypto/tls"
	"encoding/base64"
	"io"
	"io/ioutil"
	"log"
	"net/http"
	"time"
)

func checkBody(body *bytes.Buffer) io.Reader {
	if body == nil {
		return nil
	}
	return body
}

//DoRequestWithTwoWaySSL is In Two-Way SSL authentication, the client and server need to authenticate and validate each others identities.
func DoRequestWithTwoWaySSL(timeOut time.Duration, certPEM string, keyPEM string, basicUsername string, basicPassword string, method string, url string, header http.Header, body *bytes.Buffer) ([]byte, int, error) {
	c, err := tls.X509KeyPair([]byte(certPEM), []byte(keyPEM))
	if err != nil {
		log.Fatal("Unable to load cert", err)
	}

	tlsConfig := &tls.Config{
		Certificates: []tls.Certificate{c},
	}
	tlsConfig.BuildNameToCertificate()

	if timeOut == 0 {
		timeOut = 10 * time.Second
	}

	var client = &http.Client{
		Timeout:   timeOut,
		Transport: &http.Transport{TLSClientConfig: tlsConfig},
	}

	req, err := http.NewRequest(method, url, checkBody(body))
	if err != nil {
		return nil, 0, err
	}

	if header != nil {
		req.Header = header
	} else {
		auth := base64.StdEncoding.EncodeToString([]byte(basicUsername + ":" + basicPassword))

		header := http.Header{}
		header.Add("Accept", "application/json")
		header.Add("Content-Type", "application/json")
		header.Add("Authorization", "Basic "+auth)
		req.Header = header
	}

	resp, err := client.Do(req)
	if err != nil {
		return nil, 0, err
	}
	defer resp.Body.Close()

	content, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return nil, 0, err
	}

	return content, resp.StatusCode, nil
}