Pass the TLS Cert infos in headers

server/server.go

@@ -6,7 +6,6 @@ import (
 	"crypto/x509"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	stdlog "log"
 	"net"
 	"net/http"
@@ -438,7 +437,7 @@ func (s *Server) createTLSConfig(entryPointName string, tlsOption *traefiktls.TL
 	if len(tlsOption.ClientCA.Files) > 0 {
 		pool := x509.NewCertPool()
 		for _, caFile := range tlsOption.ClientCA.Files {
-			data, err := ioutil.ReadFile(caFile)
+			data, err := caFile.Read()
 			if err != nil {
 				return nil, err
 			}