From 042aaed084fefa6d77c3a94c3f06942b88f2ab83 Mon Sep 17 00:00:00 2001
From: pk910 <philipp@pk910.de>
Date: Thu, 30 Nov 2023 14:22:07 +0100
Subject: [PATCH] report unreachable clients with head slot `0`

---
 indexer/indexer.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/indexer/indexer.go b/indexer/indexer.go
index 35b4cd6b..bca338d5 100644
--- a/indexer/indexer.go
+++ b/indexer/indexer.go
@@ -184,6 +184,9 @@ func (indexer *Indexer) GetHeadForks(readyOnly bool) []*HeadFork {
 			continue
 		}
 		cHeadSlot, cHeadRoot, _ := client.GetLastHead()
+		if cHeadSlot < 0 {
+			cHeadSlot = 0
+		}
 		var matchingFork *HeadFork
 		for _, fork := range headForks {
 			if bytes.Equal(fork.Root, cHeadRoot) || indexer.indexerCache.isCanonicalBlock(cHeadRoot, fork.Root) {