fix possible panic

Kubernetes-commit: 91dc55562c9e7742a1cfdaa6d1db0b1ce262ff95
sttts · Jan 4, 2018 · eac4918 · eac4918
1 parent de656f3
commit eac4918
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pkg/apiserver/handler_proxy.go b/pkg/apiserver/handler_proxy.go
@@ -207,7 +207,7 @@ func (r *proxyHandler) updateAPIService(apiService *apiregistrationapi.APIServic
 		serviceNamespace: apiService.Spec.Service.Namespace,
 	}
 	newInfo.proxyRoundTripper, newInfo.transportBuildingError = restclient.TransportFor(newInfo.restConfig)
-	if newInfo.transportBuildingError == nil && r.proxyTransport.Dial != nil {
+	if newInfo.transportBuildingError == nil && r.proxyTransport != nil && r.proxyTransport.Dial != nil {
 		switch transport := newInfo.proxyRoundTripper.(type) {
 		case *http.Transport:
 			transport.Dial = r.proxyTransport.Dial