added etcd support

pkg/raft/tls/stream.go

@@ -3,7 +3,6 @@ package tls
 import (
 	"crypto/tls"
 	"crypto/x509"
-	"io/ioutil"
 	"net"
 	"time"
 
@@ -20,19 +19,6 @@ var (
 	}
 )
 
-func loadCertPool(file string) (p *x509.CertPool, err error) {
-	if file == "" {
-		return
-	}
-	buf, err := ioutil.ReadFile(file)
-	if err != nil {
-		return
-	}
-	p = x509.NewCertPool()
-	p.AppendCertsFromPEM(buf)
-	return
-}
-
 type stream struct {
 	net.Listener
 	insecure bool
@@ -44,7 +30,7 @@ func NewStream(cfg *config.Raft) (s *stream, err error) {
 	if err != nil {
 		return
 	}
-	ca, err := loadCertPool(cfg.TLS.CA)
+	ca, err := config.LoadCertPool(cfg.TLS.CA)
 	if err != nil {
 		return
 	}