From 9493303add1f92d6fb90ed2a9253574c93304b26 Mon Sep 17 00:00:00 2001
From: Julian Gruber <julian@juliangruber.com>
Date: Wed, 22 Oct 2025 12:01:45 +0200
Subject: [PATCH] fix handle `fetch` error. closes #31

---
 index.js | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index c9099c3..a9456a7 100644
--- a/index.js
+++ b/index.js
@@ -152,7 +152,22 @@ async function testRetrieval({
 }) {
   const url = `https://${clientAddress}.${CDN_HOSTNAME}/${pieceCid}`
   console.log('Fetching', url)
-  const res = await fetch(url)
+
+  let res
+  try {
+    res = await fetch(url)
+  } catch (err) {
+    console.error(
+      'ALERT Cannot retrieve data set %s piece %sfrom %s via %s: %s',
+      String(dataSetId),
+      String(pieceId),
+      botLocation ?? '<dev>',
+      url,
+      err,
+    )
+    return
+  }
+
   console.log('-> Status code:', res.status)
   if (!res.ok) {
     const reason = (await res.text()).trim()