refactor

ngin/handler/gunziphandler.go

@@ -0,0 +1,27 @@
+package handler
+
+import (
+	"compress/gzip"
+	"net/http"
+	"strings"
+
+	"zero/ngin/httpx"
+)
+
+const gzipEncoding = "gzip"
+
+func GunzipHandler(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if strings.Contains(r.Header.Get(httpx.ContentEncoding), gzipEncoding) {
+			reader, err := gzip.NewReader(r.Body)
+			if err != nil {
+				w.WriteHeader(http.StatusBadRequest)
+				return
+			}
+
+			r.Body = reader
+		}
+
+		next.ServeHTTP(w, r)
+	})
+}