一、启动https
beego实现https，通过配置文件conf/app.conf，加入https相关配置

EnableDocs = true
EnableHTTPS=true
EnableHttpTLS = true
HttpsPort = 8010
HTTPSCertFile = "conf/server.crt"
HTTPSKeyFile = "conf/server.key"

二、如何实现https的双向认证
我们都是知道，c/s 架构中，一般都是https单向认证模式，那么如何实现双向认证呢？
查看beego的官方文档并没有找到开启双向认证的地方，通过查看beego源码，具体实现在beego–>app.go里，在beego–>config.go 文件中发现相关配置参数，如下：

// Listen holds for http and https related config
type Listen struct {
	Graceful          bool // Graceful means use graceful module to start the server
	ServerTimeOut     int64
	ListenTCP4        bool
	EnableHTTP        bool
	HTTPAddr          string
	HTTPPort          int
	AutoTLS           bool
	Domains           []string
	TLSCacheDir       string
	EnableHTTPS       bool
	EnableMutualHTTPS bool          --> 开启双向认证
	HTTPSAddr         string
	HTTPSPort         int
	HTTPSCertFile     string
	HTTPSKeyFile      string
	TrustCaFile       string        --> 配置ca证书
	ClientAuth        tls.ClientAuthType
	EnableAdmin       bool
	AdminAddr         string
	AdminPort         int
	EnableFcgi        bool
	EnableStdIo       bool // EnableStdIo works with EnableFcgi Use FCGI via standard I/O
}

同步conf/app.conf中添加如下配合

EnableMutualHTTPS=true        --> 启用双向认证
EnableHttpTLS = true
HttpsPort = 8010
HTTPSCertFile = "conf/server.crt"
HTTPSKeyFile = "conf/server.key"
TrustCaFile = "conf/ca.crt"   --> 配置ca.crt证书

三、服务端开启双向认证，客户端也要有相应的实现

import (
	"crypto/tls"
	"crypto/x509"
	"fmt"
	"io/ioutil"
	"net/http"
)
var CA_CRT string = "conf/ca.crt"
var CLIENT_CRT string = "conf/client.crt"
var CLIENT_KEY string = "conf/client.key"

func main() {
	pool := x509.NewCertPool()
	caCertPath := CA_CRT

	caCrt, err := ioutil.ReadFile(caCertPath)
	if err != nil {
		fmt.Println("ReadFile err:", err)
		return
	}
	pool.AppendCertsFromPEM(caCrt)

	cliCrt, err := tls.LoadX509KeyPair(CLIENT_CRT, CLIENT_KEY)
	if err != nil {
		fmt.Println("Loadx509keypair err:", err)
		return
	}

	tr := &http.Transport{
		TLSClientConfig: &tls.Config{
			RootCAs:      pool,
			Certificates: []tls.Certificate{cliCrt},
		},
	}
	client := &http.Client{Transport: tr}
	resp, err := client.Get("https://127.0.0.1:8010")
	if err != nil {
		fmt.Println("Get error:", err)
		return
	}
	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))
}