3 files changed, 50 insertions, 14 deletions
diff --git a/weed/operation/assign_file_id.go b/weed/operation/assign_file_id.go
index b67d8b708..3f3bb13e0 100644
--- a/weed/operation/assign_file_id.go
+++ b/weed/operation/assign_file_id.go
@@ -1,13 +1,17 @@
 package operation
 
 import (
+	"bytes"
 	"context"
 	"fmt"
+
+	"github.com/valyala/fasthttp"
+	"google.golang.org/grpc"
+
+	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
 	"github.com/chrislusf/seaweedfs/weed/security"
 	"github.com/chrislusf/seaweedfs/weed/util"
-	"google.golang.org/grpc"
-	"strings"
 )
 
 type VolumeAssignRequest struct {
@@ -89,12 +93,16 @@ func Assign(server string, grpcDialOption grpc.DialOption, primaryRequest *Volum
 func LookupJwt(master string, fileId string) security.EncodedJwt {
 
 	tokenStr := ""
+	lookupUrl := fmt.Sprintf("http://%s/dir/lookup?fileId=%s", master, fileId)
 
-	if h, e := util.Head(fmt.Sprintf("http://%s/dir/lookup?fileId=%s", master, fileId)); e == nil {
-		bearer := h.Get("Authorization")
-		if len(bearer) > 7 && strings.ToUpper(bearer[0:6]) == "BEARER" {
-			tokenStr = bearer[7:]
+	err := util.Head(lookupUrl, func(header fasthttp.ResponseHeader) {
+		bearer := header.Peek("Authorization")
+		if len(bearer) > 7 && string(bytes.ToUpper(bearer[0:6])) == "BEARER" {
+			tokenStr = string(bearer[7:])
 		}
+	})
+	if err != nil {
+		glog.V(0).Infof("failed to lookup jwt %s: %v", lookupUrl, err)
 	}
 
 	return security.EncodedJwt(tokenStr)
diff --git a/weed/util/http_util.go b/weed/util/http_util.go
index 08007a038..b74e30ad7 100644
--- a/weed/util/http_util.go
+++ b/weed/util/http_util.go
@@ -12,6 +12,8 @@ import (
 	"net/url"
 	"strings"
 
+	"github.com/valyala/fasthttp"
+
 	"github.com/chrislusf/seaweedfs/weed/glog"
 )
 
@@ -83,16 +85,23 @@ func Get(url string) ([]byte, error) {
 	return b, nil
 }
 
-func Head(url string) (http.Header, error) {
-	r, err := client.Head(url)
-	if err != nil {
-		return nil, err
+func Head(url string, fn func(header fasthttp.ResponseHeader)) error {
+	req := fasthttp.AcquireRequest()
+	resp := fasthttp.AcquireResponse()
+	defer fasthttp.ReleaseRequest(req)   // <- do not forget to release
+	defer fasthttp.ReleaseResponse(resp) // <- do not forget to release
+
+	c := fasthttp.Client{}
+	req.SetRequestURI(url)
+	req.Header.SetMethod(fasthttp.MethodHead)
+	if err := c.Do(req, resp); err != nil {
+		return err
 	}
-	defer r.Body.Close()
-	if r.StatusCode >= 400 {
-		return nil, fmt.Errorf("%s: %s", url, r.Status)
+	if resp.StatusCode() >= 400 {
+		return fmt.Errorf("%s: %d", url, resp.StatusCode())
 	}
-	return r.Header, nil
+	fn(resp.Header)
+	return nil
 }
 
 func Delete(url string, jwt string) error {
diff --git a/weed/util/http_util_test.go b/weed/util/http_util_test.go
new file mode 100644
index 000000000..a8a1172d2
--- /dev/null
+++ b/weed/util/http_util_test.go
@@ -0,0 +1,19 @@
+package util
+
+import (
+	"testing"
+
+	"github.com/valyala/fasthttp"
+)
+
+func TestFasthttpClientHead(t *testing.T) {
+	err := Head("https://www.google.com", func(header fasthttp.ResponseHeader) {
+		header.VisitAll(func(key, value []byte) {
+			println(string(key) + ": " + string(value))
+		})
+	})
+	if err != nil {
+		println(err.Error())
+	}
+
+}