fixup

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

util.go

@@ -15,23 +15,30 @@ func FillRequest(ctx context.Context, req interface{}, opts ...FillRequestOption
 	for _, o := range opts {
 		o(&options)
 	}
+
 	md, ok := metadata.FromIncomingContext(ctx)
 	if !ok {
 		return nil
 	}
 
 	for idx := 0; idx < len(options.headers)/2; idx += 2 {
-		k := http.CanonicalHeaderKey(options.headers[idx])
-		v, ok := md[k]
+		k := options.headers[idx]
+		v, ok := md.Get(k)
 		if !ok {
 			continue
 		}
-		if err = rutil.SetFieldByPath(req, v, k); err != nil {
+
+		if len(v) == 1 {
+			err = rutil.SetFieldByPath(req, v[0], k)
+		} else {
+			err = rutil.SetFieldByPath(req, v, k)
+		}
+		if err != nil {
 			return err
 		}
 	}
 
-	cookieVals, _ := md["Cookie"]
+	cookieVals, _ := md.Get("Cookie")
 	for i := range cookieVals {
 		cookies := strings.Split(cookieVals[i], ";")
 		cmd := make(map[string]string, len(cookies))
@@ -45,10 +52,13 @@ func FillRequest(ctx context.Context, req interface{}, opts ...FillRequestOption
 		for idx := 0; idx < len(options.cookies)/2; idx += 2 {
 			k := http.CanonicalHeaderKey(options.cookies[idx])
 			v, ok := cmd[k]
+
 			if !ok {
 				continue
 			}
-			if err = rutil.SetFieldByPath(req, v, k); err != nil {
+
+			err = rutil.SetFieldByPath(req, v, k)
+			if err != nil {
 				return err
 			}
 		}