From e1afd4d69b8e134674ad9c45fb3723612381dafb Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Sun, 8 Nov 2026 23:34:32 +0000
Subject: dashboard: no dotted links for an end the page doesn't read

A link was dotted where an end reported no links. Members used to
report their links to every dashboard (LINKS); the page now reads a
member's links only while subscribed to it, so a dotted link said no
more than that its other end isn't subscribed, which the node shows
already (hollow), and most links were dotted. The style and its
legend entry go; the link's tooltip says when one end alone reports
it.
---
 docs/dashboard.md                |  4 ++--
 src/api/dashboard/dashboard.html | 18 +++++++-----------
 2 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/docs/dashboard.md b/docs/dashboard.md
index 9543be4..5c7ee13 100644
--- a/docs/dashboard.md
+++ b/docs/dashboard.md
@@ -127,11 +127,11 @@ milliseconds; the other transports the peers can reach each other on are thin li
 beside it, from node to node, bowing out a little (furthest at the middle), with their
 round trips smaller. The round trips are drawn near the end that
 measured them: of the two ends' reports, the one drawn is the one with a round trip,
-else the fresher. Then:
+else the fresher; a link to a node whose links the page doesn't read (not subscribed,
+drawn hollow) is drawn as the other end reports it, which its tooltip says. Then:
 
 * **Solid**: direct.
 * **Dashed**: through a relay.
-* **Dotted**: the page has one end's links only: drawn as that end reports it.
 * **Narrow, over a red band**: either end holds the other dormant, or the path in use
   is down (no path to the peer answers; `/peers` shows its connection as `null`).
 
diff --git a/src/api/dashboard/dashboard.html b/src/api/dashboard/dashboard.html
index 794fc71..086c03f 100644
--- a/src/api/dashboard/dashboard.html
+++ b/src/api/dashboard/dashboard.html
@@ -182,7 +182,6 @@
   .legend .relayed::before { border-top-style: dashed; --colour: var(--muted); }
   .legend .dormant::before { border-top-width: 1.5px; --colour: var(--muted);
     box-shadow: 0 0 0 2.5px color-mix(in srgb, var(--bad) 50%, transparent); }
-  .legend .silent::before { border-top-style: dotted; --colour: var(--muted); }
   /* A chevron on a link, as on the map: a writer's tree, the way its changes go. */
   .legend .writer-tree::before { content: "\203A"; width: auto; height: auto; border: none;
     font-weight: bold; font-size: 15px; line-height: 0; color: var(--muted); }
@@ -961,8 +960,7 @@ function renderLegend(measured) {
     el("span", { class: "other" }, "other transport"),
     el("span", { class: "direct" }, "direct"),
     el("span", { class: "relayed" }, "relayed"),
-    el("span", { class: "dormant" }, "dormant or down"),
-    el("span", { class: "silent" }, "an end reports no links"));
+    el("span", { class: "dormant" }, "dormant or down"));
   if (treeShown) {
     items.push(el("span", { class: "writer-tree" }, name(treeWriter()) +
       "'s tree: the way its changes go (of the node in focus)"));
@@ -1367,8 +1365,9 @@ function renderGraph() {
     const descriptions = [];
     const length = Math.max(Math.hypot(q.x - p.x, q.y - p.y), 1);
     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);
+    // As one end alone reports it (the other's links not read: not subscribed), in its
+    // tooltip.
+    const alone = !(b in state.graph.measured);
     // 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;
@@ -1390,11 +1389,8 @@ function renderGraph() {
         fill: "none", stroke: colourOf(line.transport),
         // 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";
-        attrs["stroke-linecap"] = "round";
-      } else if (line.used ? link.relayed : line.relayed) {
+      // Dashed where relayed, solid where direct.
+      if (line.used ? link.relayed : line.relayed) {
         attrs["stroke-dasharray"] = "7 4";
       }
       markLine(key, attrs.d, attrs["stroke-width"]);
@@ -1403,7 +1399,7 @@ function renderGraph() {
         (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" : "") +
+        (alone ? ", as " + name(a) + " alone reports it" : "") +
         (typeof line.rttMs === "number" ? ", " + line.rttMs.toFixed(1) + " ms" : "") +
         ", measured " + age(secsAgo + elapsed()) + " ago";
       tooltip(drawnLine, description);
-- 
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