Retry connection reset by peer

pkg/client/restclient/request.go

@@ -811,7 +811,20 @@ func (r *Request) request(fn func(*http.Request, *http.Response)) error {
 			r.backoffMgr.UpdateBackoff(r.URL(), err, resp.StatusCode)
 		}
 		if err != nil {
-			return err
+			// "Connection reset by peer" is usually a transient error.
+			// Thus in case of "GET" operations, we simply retry it.
+			// We are not automatically retrying "write" operations, as
+			// they are not idempotent.
+			if !net.IsConnectionReset(err) || r.verb != "GET" {
+				return err
+			}
+			// For the purpose of retry, we set the artificial "retry-after" response.
+			// TODO: Should we clean the original response if it exists?
+			resp = &http.Response{
+				StatusCode: http.StatusInternalServerError,
+				Header:     http.Header{"Retry-After": []string{"1"}},
+				Body:       ioutil.NopCloser(bytes.NewReader([]byte{})),
+			}
 		}
 
 		done := func() bool {