diff options
Diffstat (limited to 'admin.go')
| -rw-r--r-- | admin.go | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -21,7 +21,6 @@ import ( "crypto/tls" "crypto/x509" "encoding/base64" - "encoding/hex" "encoding/json" "errors" "expvar" @@ -901,6 +900,12 @@ func (h adminHandler) originAllowed(origin *url.URL) bool { // produce and verify ETags. func etagHasher() hash.Hash32 { return fnv.New32a() } +// makeEtag returns an Etag header value (including quotes) for +// the given config path and hash of contents at that path. +func makeEtag(path string, hash hash.Hash) string { + return fmt.Sprintf(`"%s %x"`, path, hash.Sum(nil)) +} + func handleConfig(w http.ResponseWriter, r *http.Request) error { switch r.Method { case http.MethodGet: @@ -919,7 +924,7 @@ func handleConfig(w http.ResponseWriter, r *http.Request) error { // we could consider setting up a sync.Pool for the summed // hashes to reduce GC pressure. - w.Header().Set("ETag", r.URL.Path+" "+hex.EncodeToString(hash.Sum(nil))) + w.Header().Set("Etag", makeEtag(r.URL.Path, hash)) return nil |