1.Add Mutual HTTPS Option!

app.go

@@ -15,7 +15,10 @@
 package beego
 
 import (
+	"crypto/tls"
+	"crypto/x509"
 	"fmt"
+	"io/ioutil"
 	"net"
 	"net/http"
 	"net/http/fcgi"
@@ -102,7 +105,7 @@ func (app *App) Run() {
 	if BConfig.Listen.Graceful {
 		httpsAddr := BConfig.Listen.HTTPSAddr
 		app.Server.Addr = httpsAddr
-		if BConfig.Listen.EnableHTTPS {
+		if BConfig.Listen.EnableHTTPS || BConfig.Listen.EnableMutualHTTPS {
 			go func() {
 				time.Sleep(20 * time.Microsecond)
 				if BConfig.Listen.HTTPSPort != 0 {
@@ -112,11 +115,20 @@ func (app *App) Run() {
 				server := grace.NewServer(httpsAddr, app.Handlers)
 				server.Server.ReadTimeout = app.Server.ReadTimeout
 				server.Server.WriteTimeout = app.Server.WriteTimeout
+				if BConfig.Listen.EnableMutualHTTPS {
+
+					if err := server.ListenAndServeMutualTLS(BConfig.Listen.HTTPSCertFile, BConfig.Listen.HTTPSKeyFile, BConfig.Listen.TrustCaFile); err != nil {
+						logs.Critical("ListenAndServeTLS: ", err, fmt.Sprintf("%d", os.Getpid()))
+						time.Sleep(100 * time.Microsecond)
+						endRunning <- true
+					}
+				} else {
 					if err := server.ListenAndServeTLS(BConfig.Listen.HTTPSCertFile, BConfig.Listen.HTTPSKeyFile); err != nil {
 						logs.Critical("ListenAndServeTLS: ", err, fmt.Sprintf("%d", os.Getpid()))
 						time.Sleep(100 * time.Microsecond)
 						endRunning <- true
 					}
+				}
 			}()
 		}
 		if BConfig.Listen.EnableHTTP {
@@ -139,7 +151,7 @@ func (app *App) Run() {
 	}
 
 	// run normal mode
-	if BConfig.Listen.EnableHTTPS {
+	if BConfig.Listen.EnableHTTPS || BConfig.Listen.EnableMutualHTTPS {
 		go func() {
 			time.Sleep(20 * time.Microsecond)
 			if BConfig.Listen.HTTPSPort != 0 {
@@ -149,6 +161,19 @@ func (app *App) Run() {
 				return
 			}
 			logs.Info("https server Running on https://%s", app.Server.Addr)
+			if BConfig.Listen.EnableMutualHTTPS {
+				pool := x509.NewCertPool()
+				data, err := ioutil.ReadFile(BConfig.Listen.TrustCaFile)
+				if err != nil {
+					BeeLogger.Info("MutualHTTPS should provide TrustCaFile")
+					return
+				}
+				pool.AppendCertsFromPEM(data)
+				app.Server.TLSConfig = &tls.Config{
+					ClientCAs:  pool,
+					ClientAuth: tls.RequireAndVerifyClientCert,
+				}
+			}
 			if err := app.Server.ListenAndServeTLS(BConfig.Listen.HTTPSCertFile, BConfig.Listen.HTTPSKeyFile); err != nil {
 				logs.Critical("ListenAndServeTLS: ", err)
 				time.Sleep(100 * time.Microsecond)

config.go

@@ -56,10 +56,12 @@ type Listen struct {
 	HTTPAddr          string
 	HTTPPort          int
 	EnableHTTPS       bool
+	EnableMutualHTTPS bool
 	HTTPSAddr         string
 	HTTPSPort         int
 	HTTPSCertFile     string
 	HTTPSKeyFile      string
+	TrustCaFile       string
 	EnableAdmin       bool
 	AdminAddr         string
 	AdminPort         int

grace/server.go

@@ -2,7 +2,9 @@ package grace
 
 import (
 	"crypto/tls"
+	"crypto/x509"
 	"fmt"
+	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
@@ -129,6 +131,61 @@ func (srv *Server) ListenAndServeTLS(certFile, keyFile string) (err error) {
 	return srv.Serve()
 }
 
+//ListenAndServeMutualTLS
+func (srv *Server) ListenAndServeMutualTLS(certFile, keyFile, trustFile string) (err error) {
+	addr := srv.Addr
+	if addr == "" {
+		addr = ":https"
+	}
+
+	if srv.TLSConfig == nil {
+		srv.TLSConfig = &tls.Config{}
+	}
+	if srv.TLSConfig.NextProtos == nil {
+		srv.TLSConfig.NextProtos = []string{"http/1.1"}
+	}
+
+	srv.TLSConfig.Certificates = make([]tls.Certificate, 1)
+	srv.TLSConfig.Certificates[0], err = tls.LoadX509KeyPair(certFile, keyFile)
+	if err != nil {
+		return
+	}
+	srv.TLSConfig.ClientAuth = tls.RequireAndVerifyClientCert
+	pool := x509.NewCertPool()
+	data, err := ioutil.ReadFile(trustFile)
+	if err != nil {
+		log.Println(err)
+		return err
+	}
+	pool.AppendCertsFromPEM(data)
+	srv.TLSConfig.ClientCAs = pool
+	log.Println("Mutual HTTPS")
+	go srv.handleSignals()
+
+	l, err := srv.getListener(addr)
+	if err != nil {
+		log.Println(err)
+		return err
+	}
+
+	srv.tlsInnerListener = newGraceListener(l, srv)
+	srv.GraceListener = tls.NewListener(srv.tlsInnerListener, srv.TLSConfig)
+
+	if srv.isChild {
+		process, err := os.FindProcess(os.Getppid())
+		if err != nil {
+			log.Println(err)
+			return err
+		}
+		err = process.Kill()
+		if err != nil {
+			return err
+		}
+	}
+	log.Println(os.Getpid(), srv.Addr)
+	return srv.Serve()
+}
+
 // getListener either opens a new socket to listen on, or takes the acceptor socket
 // it got passed when restarted.
 func (srv *Server) getListener(laddr string) (l net.Listener, err error) {