From ee58e648a604c4046e9dfa2844d34fc1bb79efcd Mon Sep 17 00:00:00 2001
From: you <you@example.com>
Date: Sat, 21 Mar 2026 18:43:48 +0000
Subject: [PATCH] Fix hash_size using first-seen-wins instead of last-seen-wins

The hashSizeMap was guarded by !hashSizeMap.has(pk), meaning the oldest
ADVERT determined a node's hash_size permanently. If a node upgraded
firmware from 1-byte to 2-byte hash prefix, the stale value persisted.

Remove the guard so newer packets overwrite older ones (last-seen-wins).
---
 server.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/server.js b/server.js
index 3bb5e616..01ec834d 100644
--- a/server.js
+++ b/server.js
@@ -1087,7 +1087,7 @@ app.get('/api/nodes', (req, res) => {
       try {
         const d = JSON.parse(p.decoded_json || '{}');
         const pk = d.pubKey || d.public_key;
-        if (pk && !hashSizeMap.has(pk)) {
+        if (pk) {
           const pathByte = parseInt(p.raw_hex.slice(2, 4), 16);
           hashSizeMap.set(pk, ((pathByte >> 6) & 0x3) + 1);
         }
@@ -1111,7 +1111,7 @@ app.get('/api/nodes', (req, res) => {
             if (p.decoded_json) {
               const d = JSON.parse(p.decoded_json);
               const pk = d.pubKey || d.public_key;
-              if (pk && !hashSizeMap.has(pk)) hashSizeMap.set(pk, hs);
+              if (pk) hashSizeMap.set(pk, hs);
             }
           }
         }