1 files changed, 17 insertions, 2 deletions
diff --git a/src/features/messages.js b/src/features/messages.js
index dc311d8..a517407 100644
--- a/src/features/messages.js
+++ b/src/features/messages.js
@@ -726,7 +726,8 @@ export function messagesFeature(ctx) {
   // thumbnail is to be had there, so after a second quick refusal the host
   // is left alone for a week rather than asked about every new face.
   // v2: the first list was mostly wrong (primal's CDN, coinos.io) — see corsFetch
-  const NOCORS_KEY = 'coinos-thumb-nocors-v2';
+  // v3: v2 also caught dropped connections (primal again, on a phone)
+  const NOCORS_KEY = 'coinos-thumb-nocors-v3';
   const NOCORS_MS = 7 * 24 * 3600_000;
   let noCors = null; // host -> { n, until }
   const noCorsNow = () => { if (!noCors) { try { noCors = JSON.parse(localStorage.getItem(NOCORS_KEY) || '{}'); } catch { noCors = {}; } } return noCors; };
@@ -747,12 +748,26 @@ export function messagesFeature(ctx) {
   // the host refused. That wrote primal and coinos.io off as "no CORS" and
   // left every picture hosted there painting from the full-size original.
   // So a refusal is retried once past the cache before anyone is blamed.
+  // And a refusal looks exactly like a dropped connection (a phone between
+  // networks, a DNS hiccup): both are a quick TypeError. Two of those wrote
+  // blossom.primal.net off for a week on a phone. So the host is only
+  // blamed (TypeError rethrown) when a plain no-cors ask of the same URL
+  // goes through; otherwise it's the network, and the error says so.
   async function corsFetch(url, signal) {
     try {
       return await fetch(url, { mode: 'cors', signal });
     } catch (e) {
       if (!e || e.name !== 'TypeError') throw e;
-      return fetch(url, { mode: 'cors', cache: 'reload', signal });
+      try {
+        return await fetch(url, { mode: 'cors', cache: 'reload', signal });
+      } catch (e2) {
+        if (!e2 || e2.name !== 'TypeError') throw e2;
+        let reachable = false;
+        try { await fetch(url, { mode: 'no-cors', signal }); reachable = true; } catch {}
+        if (reachable) throw e2;
+        const net = new Error('network'); net.name = 'NetworkError';
+        throw net;
+      }
     }
   }
   function makeThumb(pk, p) {