Merge branch 'prop/outbox-message-ui'

1 files changed, 17 insertions, 1 deletions

diff --git a/ui/lib/apiServer.js b/ui/lib/apiServer.js
index cad8997..e682681 100644
--- a/ui/lib/apiServer.js
+++ b/ui/lib/apiServer.js
@@ -87,5 +87,21 @@ function responseError(err) {
 }
 
 function isRetryable(err) {
-  return !!err.request;
+  // See <https://axios-http.com/docs/handling_errors> for a breakdown of this logic.
+
+  // Any error with a response is non-retryable. The server responded; we get to act on that
+  // response. We don't do anything special for 5xx-series responses yet, but they might one day be
+  // retryable too.
+  if (err.response) {
+    return false;
+  }
+
+  // Any error with no response and a request is probably from the network side of things, and is
+  // retryable.
+  if (err.request) {
+    return true;
+  }
+
+  // Anything with neither is unexpected enough that we should not try it.
+  return false;
 }