pytorrent/services/rtorrent.py

@@ -984,9 +984,39 @@ def _tracker_int(value, default=None):
         return default
 
 
+def _tracker_rows(c: ScgiRtorrentClient, torrent_hash: str) -> list[list]:
+    fields = ("t.url=", "t.is_enabled=", "t.scrape_complete=", "t.scrape_incomplete=", "t.scrape_downloaded=")
+    errors: list[str] = []
+    for args in ((torrent_hash, "", *fields), ("", torrent_hash, *fields)):
+        try:
+            rows = c.call("t.multicall", *args)
+            return [list(r) for r in (rows or [])]
+        except Exception as exc:
+            errors.append(f"t.multicall{args[:2]}: {exc}")
+    # Note: Fallback keeps the sidebar tracker filter usable on rTorrent builds without t.multicall scrape fields.
+    total = _tracker_int(_safe_tracker_call(c, "d.tracker_size", torrent_hash, 0), 0) or 0
+    rows: list[list] = []
+    for index in range(max(0, total)):
+        target = _tracker_target(torrent_hash, index)
+        url = _safe_tracker_call(c, "t.url", target, "")
+        if not url:
+            for args in ((torrent_hash, index), ("", torrent_hash, index)):
+                try:
+                    url = c.call("t.url", *args)
+                    break
+                except Exception:
+                    continue
+        if url:
+            enabled = _safe_tracker_call(c, "t.is_enabled", target, 1)
+            rows.append([url, enabled, None, None, None])
+    if rows:
+        return rows
+    raise RuntimeError("Cannot read trackers: " + "; ".join(errors))
+
+
 def torrent_trackers(profile: dict, torrent_hash: str) -> list[dict]:
     c = client_for(profile)
-    rows = c.t.multicall(torrent_hash, "", "t.url=", "t.is_enabled=", "t.scrape_complete=", "t.scrape_incomplete=", "t.scrape_downloaded=")
+    rows = _tracker_rows(c, torrent_hash)
     trackers = []
     for idx, r in enumerate(rows):
         target = _tracker_target(torrent_hash, idx)

pytorrent/static/app.js

@@ -21,6 +21,7 @@
   let titleSpeedEnabled = !!Number(window.PYTORRENT?.titleSpeedEnabled || 0);
   let trackerFaviconsEnabled = !!Number(window.PYTORRENT?.trackerFaviconsEnabled || 0);
   let trackerSummary = {hashes:{}, trackers:[], scanned:0, errors:[]};
+  let trackerSummaryStatus = 'idle';
   let trackerSummarySignature = "";
   let trackerSummaryTimer = null;
   const BASE_TITLE = document.title || "pyTorrent";
@@ -240,13 +241,22 @@
     const src=`https://${encodeURIComponent(domain).replace(/%2E/g,'.')}/favicon.ico`;
     return `<img class="tracker-favicon" src="${esc(src)}" alt="" loading="lazy" onerror="this.classList.add('d-none')"><i class="fa-solid fa-bullseye tracker-fallback-icon"></i>`;
   }
+  function trackerFilterPlaceholder(){
+    if(trackerSummaryStatus==='loading') return '<div class="tracker-filter-empty"><span class="spinner-border spinner-border-xs"></span> Loading trackers...</div>';
+    if(trackerSummaryStatus==='error') return '<div class="tracker-filter-empty text-warning"><i class="fa-solid fa-triangle-exclamation"></i> Tracker list unavailable</div>';
+    if(hasTorrentSnapshot && torrents.size) return '<div class="tracker-filter-empty">No trackers found</div>';
+    return '<div class="tracker-filter-empty">Waiting for torrents...</div>';
+  }
   function renderTrackerFilters(){
     const box=$('trackerFilters');
     if(!box) return;
     const trackers=trackerSummary.trackers || [];
     if(activeFilter.startsWith('tracker:') && !trackers.some(t=>t.domain===activeFilter.slice(8))) activeFilter='all';
-    // Note: Tracker filters are appended below status and label filters, using read-only tracker summary data.
+    // Note: Tracker filter section is always visible, so an empty or failed tracker scan does not look like a missing feature.
-    box.innerHTML=trackers.length?`<div class="small text-muted px-2 mb-1">Trackers</div>${trackers.map(t=>`<button class="filter tracker-filter ${activeFilter==='tracker:'+t.domain?'active':''}" data-filter="tracker:${esc(t.domain)}"><span>${trackerFavicon(t.domain)} ${esc(t.domain)}</span><span>${esc(t.count||0)}</span></button>`).join('')}`:'';
+    const rows=trackers.length
+      ? trackers.map(t=>`<button class="filter tracker-filter ${activeFilter==='tracker:'+t.domain?'active':''}" data-filter="tracker:${esc(t.domain)}"><span>${trackerFavicon(t.domain)} ${esc(t.domain)}</span><span>${esc(t.count||0)}</span></button>`).join('')
+      : trackerFilterPlaceholder();
+    box.innerHTML=`<div class="small text-muted px-2 mb-1">Trackers</div>${rows}`;
     bindSidebarFilterClicks(box);
   }
   async function refreshTrackerSummary(force=false){
@@ -254,14 +264,20 @@
     const sig=`${hashes.length}:${hashes.slice(0,2000).join(',')}:${trackerFaviconsEnabled?1:0}`;
     if(!force && sig===trackerSummarySignature) return;
     trackerSummarySignature=sig;
-    if(!hashes.length){ trackerSummary={hashes:{},trackers:[],scanned:0,errors:[]}; renderTrackerFilters(); return; }
+    if(!hashes.length){ trackerSummary={hashes:{},trackers:[],scanned:0,errors:[]}; trackerSummaryStatus='empty'; renderTrackerFilters(); return; }
+    trackerSummaryStatus='loading';
+    renderTrackerFilters();
     try{
-      const j=await (await fetch(`/api/trackers/summary?limit=2000`)).json();
+      const qs=new URLSearchParams({limit:'2000'});
+      // Note: Browser sends currently visible torrent hashes, avoiding an empty cache race on the backend.
+      hashes.slice(0,2000).forEach(h=>qs.append('hash',h));
+      const j=await (await fetch(`/api/trackers/summary?${qs.toString()}`)).json();
       if(!j.ok) throw new Error(j.error||'Tracker summary failed');
       trackerSummary=j.summary||{hashes:{},trackers:[],scanned:0,errors:[]};
+      trackerSummaryStatus=(trackerSummary.trackers||[]).length?'ready':'empty';
       renderTrackerFilters();
       scheduleRender(true);
-    }catch(e){ console.warn('Tracker summary failed', e); }
+    }catch(e){ trackerSummaryStatus='error'; renderTrackerFilters(); console.warn('Tracker summary failed', e); }
   }
   function scheduleTrackerSummary(force=false){
     clearTimeout(trackerSummaryTimer);

pytorrent/static/styles.css

@@ -892,6 +892,20 @@ body.mobile-mode .main-grid {
   display: none;
 }
 
+.tracker-filter-empty {
+  align-items: center;
+  color: var(--bs-secondary-color);
+  display: flex;
+  font-size: 0.78rem;
+  gap: 0.35rem;
+  padding: 0.25rem 0.5rem;
+}
+
+/* Note: Empty tracker state uses the same sidebar spacing as regular filter rows. */
+.tracker-filter-empty .spinner-border-xs {
+  height: 0.65rem;
+  width: 0.65rem;
+}
 
 .column-manager {
   display: grid;