From b0bc3629bec1088a97eccbedcc465f19155e9036 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E2=80=9CNaeel=E2=80=9D?= <tazet@narod.ru>
Date: Sat, 11 Jul 2026 10:27:06 +0400
Subject: [PATCH] fix: bulletproof WS promise + cache bust, bump 1.0.24

---
 site/app.py        |  2 +-
 site/static/app.js | 29 ++++++++++++++++++-----------
 2 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/site/app.py b/site/app.py
index 7e01d9c..77e9e72 100644
--- a/site/app.py
+++ b/site/app.py
@@ -6,7 +6,7 @@ from flask_sock import Sock
 app = Flask(__name__)
 sock = Sock(app)
 
-VERSION = '1.0.23'
+VERSION = '1.0.24'
 
 
 @app.route('/')
diff --git a/site/static/app.js b/site/static/app.js
index 7dad31c..353597d 100644
--- a/site/static/app.js
+++ b/site/static/app.js
@@ -167,6 +167,7 @@ async function uploadAll() {
     renderTable();
     try {
       var result = await uploadFileWS(wsUrl, f);
+      if (!result) throw new Error('Empty result');
       f.status = 'ok';
       f.elapsed = result.elapsed_ms;
       f.speed = result.elapsed_ms > 0 ? Math.round(result.bytes / (result.elapsed_ms / 1000)) : null;
@@ -175,7 +176,7 @@ async function uploadAll() {
       okCount++;
     } catch (e) {
       f.status = 'err';
-      f.error = e.message || 'Unknown error';
+      f.error = (e && e.message) || String(e) || 'Unknown error';
       errCount++;
     }
     renderTable();
@@ -201,10 +202,20 @@ function uploadFileWS(url, f) {
     var offset = 0;
     var startTime = Date.now();
     var lastProgress = 0;
-    var timer = setTimeout(function () { ws.close(); reject(new Error('Timeout')); }, 300000);
+    var done = false;
 
     ws.binaryType = 'arraybuffer';
 
+    function finish(err, data) {
+      if (done) return;
+      done = true;
+      try { ws.close(); } catch (e) {}
+      if (err) reject(err);
+      else resolve(data);
+    }
+
+    setTimeout(function () { finish(new Error('Timeout')); }, 300000);
+
     ws.onopen = function () {
       var reader = new FileReader();
       reader.onload = function (e) {
@@ -228,20 +239,16 @@ function uploadFileWS(url, f) {
     ws.onmessage = function (e) {
       try {
         var r = JSON.parse(e.data);
-        if (r.ok) {
-          clearTimeout(timer);
+        if (r && r.ok) {
           f.progress = 100;
           renderTable();
-          ws.close();
-          resolve({ bytes: r.bytes, elapsed_ms: Date.now() - startTime });
+          finish(null, { bytes: r.bytes, elapsed_ms: Date.now() - startTime });
         }
-      } catch (err) {
-        reject(new Error('Bad response'));
-      }
+      } catch (err) {}
     };
 
-    ws.onerror = function () { reject(new Error('WebSocket error')); };
-    ws.onclose = function () { if (offset < f.size) reject(new Error('WS closed early')); };
+    ws.onerror = function () { finish(new Error('Connection failed')); };
+    ws.onclose = function () { if (offset < f.size) finish(new Error('Closed early')); };
   });
 }