middleware: set Vary header if compressed

piggybox · Apr 30, 2019 · 988e36e · 988e36e
1 parent af3b6a3
commit 988e36e
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/middleware/compress.go b/middleware/compress.go
@@ -327,6 +327,7 @@ func (cw *compressResponseWriter) WriteHeader(code int) {
 
 	if cw.encoding != "" {
 		cw.Header().Set("Content-Encoding", cw.encoding)
+		cw.Header().Set("Vary", "Accept-Encoding")
 
 		// The content-length after compression is unknown
 		cw.Header().Del("Content-Length")