Nomalize url before redirecting.

go/util/http_util.go

@@ -104,3 +104,10 @@ func DownloadUrl(fileUrl string) (filename string, content []byte, e error) {
 func Do(req *http.Request) (resp *http.Response, err error) {
 	return client.Do(req)
 }
+
+func NormalizeUrl(url string) string {
+	if strings.HasPrefix(url, "http://") || strings.HasPrefix(url, "https://") {
+		return url
+	}
+	return "http://" + url
+}

go/weed/weed_server/master_server_handlers_admin.go

@@ -123,7 +123,7 @@ func (ms *MasterServer) redirectHandler(w http.ResponseWriter, r *http.Request)
 	}
 	machines := ms.Topo.Lookup("", volumeId)
 	if machines != nil && len(machines) > 0 {
-		http.Redirect(w, r, "http://"+machines[rand.Intn(len(machines))].PublicUrl+r.URL.Path, http.StatusMovedPermanently)
+		http.Redirect(w, r, util.NormalizeUrl(machines[rand.Intn(len(machines))].PublicUrl)+r.URL.Path, http.StatusMovedPermanently)
 	} else {
 		writeJsonError(w, r, http.StatusNotFound, fmt.Errorf("volume id %d not found", volumeId))
 	}

go/weed/weed_server/volume_server_handlers_read.go

@@ -13,6 +13,7 @@ import (
 	"github.com/chrislusf/weed-fs/go/images"
 	"github.com/chrislusf/weed-fs/go/operation"
 	"github.com/chrislusf/weed-fs/go/storage"
+	"github.com/chrislusf/weed-fs/go/util"
 )
 
 var fileNameEscaper = strings.NewReplacer("\\", "\\\\", "\"", "\\\"")
@@ -38,7 +39,7 @@ func (vs *VolumeServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
 		lookupResult, err := operation.Lookup(vs.GetMasterNode(), volumeId.String())
 		glog.V(2).Infoln("volume", volumeId, "found on", lookupResult, "error", err)
 		if err == nil && len(lookupResult.Locations) > 0 {
-			http.Redirect(w, r, "http://"+lookupResult.Locations[0].Url+r.URL.Path, http.StatusMovedPermanently)
+			http.Redirect(w, r, util.NormalizeUrl(lookupResult.Locations[0].PublicUrl)+r.URL.Path, http.StatusMovedPermanently)
 		} else {
 			glog.V(2).Infoln("lookup error:", err, r.URL.Path)
 			w.WriteHeader(http.StatusNotFound)