From 4e0d0312a591fd55e3dabbf5fa6dd9f00408c045 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Sat, 31 Oct 2026 21:12:50 +0100
Subject: links report down

---
 src/api/dashboard/dashboard.html | 27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)

(limited to 'src/api/dashboard/dashboard.html')

diff --git a/src/api/dashboard/dashboard.html b/src/api/dashboard/dashboard.html
index f45ded3..d2935f6 100644
--- a/src/api/dashboard/dashboard.html
+++ b/src/api/dashboard/dashboard.html
@@ -404,7 +404,7 @@ function renderLegend(measured) {
     el("span", { class: "other" }, "other transport"),
     el("span", { class: "direct" }, "direct"),
     el("span", { class: "relayed" }, "relayed"),
-    el("span", { class: "dormant" }, "dormant"),
+    el("span", { class: "dormant" }, "dormant or down"),
     el("span", { class: "silent" }, "an end reports no links"));
   document.getElementById("legend").replaceChildren(...items);
 }
@@ -427,15 +427,19 @@ function edges() {
       if (!known || (timed && !knownTimed) ||
           (timed === knownTimed && report.secsAgo < known.secsAgo)) {
         measured.set(key, { a, b: link.peer, link, secsAgo: report.secsAgo,
-          dormant: link.dormant || (known && known.dormant) });
-      } else if (link.dormant) {
-        known.dormant = true;
+          dormant: link.dormant || (known && known.dormant),
+          down: link.down || (known && known.down) });
+      } else {
+        if (link.dormant) known.dormant = true;
+        if (link.down) known.down = true;
       }
     }
   }
-  // Dormant if either end holds the other so, whichever report is drawn.
+  // Dormant, or down, if either end says so, whichever report is drawn.
   for (const edge of measured.values()) {
-    if (edge.dormant && !edge.link.dormant) edge.link = { ...edge.link, dormant: true };
+    if ((edge.dormant && !edge.link.dormant) || (edge.down && !edge.link.down)) {
+      edge.link = { ...edge.link, dormant: !!edge.dormant, down: !!edge.down };
+    }
   }
   return { intended, measured };
 }
@@ -615,8 +619,10 @@ function renderGraph() {
     const nx = -(q.y - p.y) / length, ny = (q.x - p.x) / length;
     // An end that reports no links (any more): what's drawn may be out of date.
     const silent = !(a in state.graph.measured) || !(b in state.graph.measured);
-    // Dormant: a red underlay as wide as the lines, as a dormant node's red outline.
-    if (link.dormant) {
+    // Dormant, or down (no path answers, whatever its connection was): a red underlay
+    // as wide as the lines, as a dormant node's red outline.
+    const broken = link.dormant || link.down;
+    if (broken) {
       children.push(drawing("underlay " + key, "line", { x1: p.x, y1: p.y, x2: q.x, y2: q.y,
         stroke: "var(--bad)", "stroke-opacity": .5, "stroke-width": width + 4,
         "stroke-linecap": "round" }));
@@ -627,8 +633,8 @@ function renderGraph() {
       const ox = nx * side, oy = ny * side;
       const attrs = { x1: p.x + ox, y1: p.y + oy, x2: q.x + ox, y2: q.y + oy,
         stroke: colourOf(line.transport),
-        // Narrow where dormant (over its underlay).
-        "stroke-width": link.dormant ? (line.used ? 1.5 : 0.8) : line.used ? 3 : 1.2 };
+        // Narrow where dormant or down (over its underlay).
+        "stroke-width": broken ? (line.used ? 1.5 : 0.8) : line.used ? 3 : 1.2 };
       // Dotted where an end reports nothing, dashed where relayed, solid where direct.
       if (silent) {
         attrs["stroke-dasharray"] = line.used ? "1 5" : "1 3";
@@ -640,6 +646,7 @@ function renderGraph() {
       const description = name(a) + " – " + name(b) +
         (line.transport ? " via " + line.transport : "") + (line.used ? " (in use)" : "") +
         ((line.used ? link.relayed : line.relayed) ? ", relayed" : "") + (link.dormant ? ", dormant" : "") +
+        (line.used && link.down ? ", down" : "") +
         (silent ? ", one end reports no links" : "") +
         (typeof line.rttMs === "number" ? ", " + line.rttMs.toFixed(1) + " ms" : "") +
         ", measured " + age(secsAgo + elapsed()) + " ago";
-- 
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