http: add QueryUnescape in HTTPPool.ServeHTTP

Use url.QueryUnescape to inverse escaped group and key in path.

http.go

@@ -148,8 +148,16 @@ func (p *HTTPPool) ServeHTTP(w http.ResponseWriter, r *http.Request) {
  http.Error(w, "bad request", http.StatusBadRequest)
  return
  }
- groupName := parts[0]
- key := parts[1]
+ groupName, err := url.QueryUnescape(parts[0])
+ if err != nil {
+ http.Error(w, "bad request", http.StatusBadRequest)
+ return
+ }
+ key, err := url.QueryUnescape(parts[1])
+ if err != nil {
+ http.Error(w, "bad request", http.StatusBadRequest)
+ return
+ }
 
  // Fetch the value for this group/key.
  group := GetGroup(groupName)
@@ -164,7 +172,7 @@ func (p *HTTPPool) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
  group.Stats.ServerRequests.Add(1)
  var value []byte
- err := group.Get(ctx, key, AllocatingByteSliceSink(&value))
+ err = group.Get(ctx, key, AllocatingByteSliceSink(&value))
  if err != nil {
  http.Error(w, err.Error(), http.StatusInternalServerError)
  return