From 77e78d55fc28249dea3831416ea90db2172d9e07 Mon Sep 17 00:00:00 2001
From: wukko <me@wukko.me>
Date: Sat, 7 Jun 2025 11:46:16 +0600
Subject: [PATCH] web/workers/fetch: catch network-related errors & retry 3
 times

previously all network issues showed a "worker crashed" error, which people misinterpreted all the time, and reasonably so
---
 web/i18n/en/error/queue.json              | 1 +
 web/src/lib/task-manager/workers/fetch.ts | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/web/i18n/en/error/queue.json b/web/i18n/en/error/queue.json
index 44e60989..064dce5a 100644
--- a/web/i18n/en/error/queue.json
+++ b/web/i18n/en/error/queue.json
@@ -7,6 +7,7 @@
     "fetch.no_file_reader": "couldn't write a file to cache",
     "fetch.empty_tunnel": "file tunnel is empty, try again in a few minutes",
     "fetch.corrupted_file": "file wasn't downloaded fully, try again",
+    "fetch.network_error": "downloading was interrupted by a network issue",
 
     "ffmpeg.probe_failed": "couldn't probe this file, it may be unsupported or corrupted",
     "ffmpeg.out_of_memory": "not enough available memory, can't continue",
diff --git a/web/src/lib/task-manager/workers/fetch.ts b/web/src/lib/task-manager/workers/fetch.ts
index 8d1fb8cf..d1bf4d8a 100644
--- a/web/src/lib/task-manager/workers/fetch.ts
+++ b/web/src/lib/task-manager/workers/fetch.ts
@@ -1,5 +1,10 @@
 import * as Storage from "$lib/storage";
 
+const networkErrors = [
+    "TypeError: Failed to fetch",
+    "TypeError: network error",
+];
+
 let attempts = 0;
 
 const fetchFile = async (url: string) => {
@@ -83,6 +88,10 @@ const fetchFile = async (url: string) => {
             }
         });
     } catch (e) {
+        // retry several times if the error is network-related
+        if (networkErrors.includes(String(e))) {
+            return error("queue.fetch.network_error");
+        }
         console.error("error from the fetch worker:");
         console.error(e);
         return error("queue.fetch.crashed", false);